Define planets, solar systems, and galaxies - Earth Science
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Which of the following images best represents a galaxy?
Which of the following images best represents a galaxy?
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Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following lists celestial bodies in order from smallest to largest?
Which of the following lists celestial bodies in order from smallest to largest?
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Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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What characteristics are shared by the first four planets in our solar system?
What characteristics are shared by the first four planets in our solar system?
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The answer is "They are solid and rocky."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "They are solid and rocky."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following best defines the term "galaxy?"
Which of the following best defines the term "galaxy?"
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Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following terms is defined as, "a ball of hydrogen gas held together by gravity. The central core of is extremely hot and produces energy"?
Which of the following terms is defined as, "a ball of hydrogen gas held together by gravity. The central core of is extremely hot and produces energy"?
Tap to reveal answer
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following is the primary difference between a planet and a moon?
Which of the following is the primary difference between a planet and a moon?
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Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following answer choices is a satellite that orbits a planet and reflects light from a star?
Which of the following answer choices is a satellite that orbits a planet and reflects light from a star?
Tap to reveal answer
The answer is "a moon" because moons revolve around planets.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "a moon" because moons revolve around planets.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Where would a new star likely form?
Where would a new star likely form?
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The answer is "in a nebula" because a nebula is a cloud of interstellar dust, hydrogen and helium, the components of star.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "in a nebula" because a nebula is a cloud of interstellar dust, hydrogen and helium, the components of star.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following is the best description of the Milky Way Galaxy?
Which of the following is the best description of the Milky Way Galaxy?
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The answer is "a spiral shaped cloud of billions of stars."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "a spiral shaped cloud of billions of stars."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following lists of objects contains only space objects that reflect light?
Which of the following lists of objects contains only space objects that reflect light?
Tap to reveal answer
The answer is "moons, planets, comets."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "moons, planets, comets."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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What characteristics are shared by the first four planets in our solar system?
What characteristics are shared by the first four planets in our solar system?
Tap to reveal answer
The answer is "They are solid and rocky."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "They are solid and rocky."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following images best represents a galaxy?
Which of the following images best represents a galaxy?
Tap to reveal answer
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following lists celestial bodies in order from smallest to largest?
Which of the following lists celestial bodies in order from smallest to largest?
Tap to reveal answer
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following lists of objects contains only space objects that reflect light?
Which of the following lists of objects contains only space objects that reflect light?
Tap to reveal answer
The answer is "moons, planets, comets."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "moons, planets, comets."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following best defines the term "galaxy?"
Which of the following best defines the term "galaxy?"
Tap to reveal answer
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following terms is defined as, "a ball of hydrogen gas held together by gravity. The central core of is extremely hot and produces energy"?
Which of the following terms is defined as, "a ball of hydrogen gas held together by gravity. The central core of is extremely hot and produces energy"?
Tap to reveal answer
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following is the primary difference between a planet and a moon?
Which of the following is the primary difference between a planet and a moon?
Tap to reveal answer
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following answer choices is a satellite that orbits a planet and reflects light from a star?
Which of the following answer choices is a satellite that orbits a planet and reflects light from a star?
Tap to reveal answer
The answer is "a moon" because moons revolve around planets.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "a moon" because moons revolve around planets.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Where would a new star likely form?
Where would a new star likely form?
Tap to reveal answer
The answer is "in a nebula" because a nebula is a cloud of interstellar dust, hydrogen and helium, the components of star.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "in a nebula" because a nebula is a cloud of interstellar dust, hydrogen and helium, the components of star.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following is the best description of the Milky Way Galaxy?
Which of the following is the best description of the Milky Way Galaxy?
Tap to reveal answer
The answer is "a spiral shaped cloud of billions of stars."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
The answer is "a spiral shaped cloud of billions of stars."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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