Earth and Space Science - 1st Grade Science
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Sam looks out her window in the morning and observes the Sun in the sky. Later she looks outside and it is still light out but she can't see the Sun anymore. Why?
Sam looks out her window in the morning and observes the Sun in the sky. Later she looks outside and it is still light out but she can't see the Sun anymore. Why?
Sam cannot see the Sun out of her window in the evening or later in the day because the Earth has moved! The Sun appears to move through the sky but it is actually the Earth that is moving. As the Earth spins the Sun appears in different parts of the sky.
Sam cannot see the Sun out of her window in the evening or later in the day because the Earth has moved! The Sun appears to move through the sky but it is actually the Earth that is moving. As the Earth spins the Sun appears in different parts of the sky.
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The stars can only be seen during the night.
The stars can only be seen during the night.
This is a true statement. We can see one star during the day, our star the Sun, but we cannot see all of the other stars and constellations. During the daytime, the Sun it too bright for us to see other stars.
This is a true statement. We can see one star during the day, our star the Sun, but we cannot see all of the other stars and constellations. During the daytime, the Sun it too bright for us to see other stars.
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Which objects are seen in the daytime?
Which objects are seen in the daytime?
During the daytime, we are only able to see the Sun and clouds. It is too bright to see the Moon and the stars. Sometimes when it is cloudy, even the Sun is hard to see!
During the daytime, we are only able to see the Sun and clouds. It is too bright to see the Moon and the stars. Sometimes when it is cloudy, even the Sun is hard to see!
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What objects can be seen in the night sky?
What objects can be seen in the night sky?
During the nighttime, we can see the Moon, stars, and clouds. We can only see the Sun during the daytime. Some nights when it is cloudy it can even be hard to see the Moon and stars!
During the nighttime, we can see the Moon, stars, and clouds. We can only see the Sun during the daytime. Some nights when it is cloudy it can even be hard to see the Moon and stars!
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Looking up into the night sky Tyrik sees white dots like those in the picture. What are they?

Looking up into the night sky Tyrik sees white dots like those in the picture. What are they?
What Tyrik sees are stars! Stars can only be seen at night because during the day, the Sun is too bright. These stars are very far away and incredibly bright.
What Tyrik sees are stars! Stars can only be seen at night because during the day, the Sun is too bright. These stars are very far away and incredibly bright.
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What can we observe about the position of the Sun?
What can we observe about the position of the Sun?
We can observe the Sun changing positions in the sky during the day. The sun rises in the East and sets in the West. The Earth is always spinning so this makes the Sun appear to be moving!
We can observe the Sun changing positions in the sky during the day. The sun rises in the East and sets in the West. The Earth is always spinning so this makes the Sun appear to be moving!
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We cannot make observations about the objects in the daytime and nighttime sky.
We cannot make observations about the objects in the daytime and nighttime sky.
This is not a true statement! We are able to observe many objects in our daytime and nighttime sky including the Sun, the Moon, stars, and clouds. We can make observations with just our eyes or use tools like telescopes.
This is not a true statement! We are able to observe many objects in our daytime and nighttime sky including the Sun, the Moon, stars, and clouds. We can make observations with just our eyes or use tools like telescopes.
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What are the four seasons?
What are the four seasons?
The four seasons are Summer, Fall (or Autumn), Winter, and Spring. Due to the Earth being slightly tilted, the seasons change as the Earth travels around the Sun.
The four seasons are Summer, Fall (or Autumn), Winter, and Spring. Due to the Earth being slightly tilted, the seasons change as the Earth travels around the Sun.
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What are seasons?
What are seasons?
The seasons are the four times of year that are broken up by characteristics. The Earth sits slightly tilted and travels around the Sun. Based on the Earth's location, the weather changes because of the amount of sunlight that part of the Earth is receiving.
The seasons are the four times of year that are broken up by characteristics. The Earth sits slightly tilted and travels around the Sun. Based on the Earth's location, the weather changes because of the amount of sunlight that part of the Earth is receiving.
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How are seasons different?
How are seasons different?
Seasons are different because of their temperatures, the amount of daylight, and their weather. Winter is cold, summer is hot, spring is warm, and new plants start to grow, and fall is cooler with leaves changing on the trees. Each season is marked with unique characteristics.
Seasons are different because of their temperatures, the amount of daylight, and their weather. Winter is cold, summer is hot, spring is warm, and new plants start to grow, and fall is cooler with leaves changing on the trees. Each season is marked with unique characteristics.
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The Sun always rises and sets at the same time throughout the year.
The Sun always rises and sets at the same time throughout the year.
The Sun does not set and rise at the same time every day throughout the year. The sunrise and sunset change slightly based on the Earth's slight tilt and where it is in its trip around the Sun.
The Sun does not set and rise at the same time every day throughout the year. The sunrise and sunset change slightly based on the Earth's slight tilt and where it is in its trip around the Sun.
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Does the amount of daylight change throughout the year? Why or why not?
Does the amount of daylight change throughout the year? Why or why not?
The amount of daylight does change throughout the year. This is because of the Earth's tilt and position. Some seasons are warmer and have more sunlight, whereas others are cooler and have less sunlight.
The amount of daylight does change throughout the year. This is because of the Earth's tilt and position. Some seasons are warmer and have more sunlight, whereas others are cooler and have less sunlight.
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How does your shadow change throughout the day?
How does your shadow change throughout the day?
During the day shadows change in length. When the Sun is directly above us our shadows are shorter, when the Sun is low in the sky our shadows are longer. This can be tested by going outside during different times on a sunny day and observing the length of your shadow.
During the day shadows change in length. When the Sun is directly above us our shadows are shorter, when the Sun is low in the sky our shadows are longer. This can be tested by going outside during different times on a sunny day and observing the length of your shadow.
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Lisa went outside at noon in the winter and noticed her shadow was four feet long. She repeated this during the summer and her shadow was only two feet long. Why did her shadow change?
Lisa went outside at noon in the winter and noticed her shadow was four feet long. She repeated this during the summer and her shadow was only two feet long. Why did her shadow change?
Lisa observed this because of the Earth's tilt and position. During the summer, we are tilted towards the Sun, so our midday shadows are very short. During the winter, we have tilted away from the Sun, so our midday shadows are longer.
Lisa observed this because of the Earth's tilt and position. During the summer, we are tilted towards the Sun, so our midday shadows are very short. During the winter, we have tilted away from the Sun, so our midday shadows are longer.
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What does it mean to make observations? Example: Mrs. Sweets told the class to make observations during today's science lab about plants.
What does it mean to make observations? Example: Mrs. Sweets told the class to make observations during today's science lab about plants.
To make an observation means to watch something carefully and even take notes about it. In science, we collect data and information using our five senses to make conclusions about what we studied. Observing the experiment or investigation is important so you can gather evidence of what took place.
To make an observation means to watch something carefully and even take notes about it. In science, we collect data and information using our five senses to make conclusions about what we studied. Observing the experiment or investigation is important so you can gather evidence of what took place.
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The sunrise and sunset change daily because the Sun changing its schedule.
The sunrise and sunset change daily because the Sun changing its schedule.
The sunrise and sunset do change daily, but not because of the Sun! The reason the times for sunset and sunrise change are because of the Earth's tilt and position. Depending on where the Earth is in its rotation and how it is tilted, the sunrise and sunset will change a little bit each day.
The sunrise and sunset do change daily, but not because of the Sun! The reason the times for sunset and sunrise change are because of the Earth's tilt and position. Depending on where the Earth is in its rotation and how it is tilted, the sunrise and sunset will change a little bit each day.
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How is the sun different at noon than at 7:00 PM?
How is the sun different at noon than at 7:00 PM?
The Sun is different throughout the day because of its position in the sky. At noon it will be directly above our heads in the sky. At 7 PM, the Sun will be setting so it will be low on the horizon or even beginning to disappear below the horizon depending on location and time of year.
The Sun is different throughout the day because of its position in the sky. At noon it will be directly above our heads in the sky. At 7 PM, the Sun will be setting so it will be low on the horizon or even beginning to disappear below the horizon depending on location and time of year.
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What time of the year has the shortest days (least amount of sunlight)?
What time of the year has the shortest days (least amount of sunlight)?
The winter has the least amount of sunlight when compared to the other seasons. During the winter, because of the Earth's position, we have less direct sunlight leading to shorter days, cooler temperatures, and the least amount of sunlight.
The winter has the least amount of sunlight when compared to the other seasons. During the winter, because of the Earth's position, we have less direct sunlight leading to shorter days, cooler temperatures, and the least amount of sunlight.
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What is the relationship between seasons and the number of daylight hours?
What is the relationship between seasons and the number of daylight hours?
There is a direct relationship between seasons and the number of daylight hours. During the spring and summer, longer days mean more daylight hours because of the Sun's tilt and position; during the winter, the days are shorter.
There is a direct relationship between seasons and the number of daylight hours. During the spring and summer, longer days mean more daylight hours because of the Sun's tilt and position; during the winter, the days are shorter.
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The order of the seasons changes every year.
The order of the seasons changes every year.
This is an untrue statement. The order of the seasons stays the same every year. The order is based on the Earth's revolution around the sun which does not change.
This is an untrue statement. The order of the seasons stays the same every year. The order is based on the Earth's revolution around the sun which does not change.
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