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Middle School Earth and Space Science Flashcards: Why Orbits Happen

Study Why Orbits Happen in Middle School Earth and Space Science with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What formula gives the centripetal force needed for circular motion at speed vv and radius rr?

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ANSWER

Fc=mv2rF_c=\frac{mv^2}{r}. Force needed for circular motion depends on mass, speed squared, and radius.

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Middle School Earth and Space Science: Earth's Place in the Universe

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What this deck covers

This deck focuses on Why Orbits Happen, giving you a quick way to review the definitions, rules, and examples that matter most for Middle School Earth and Space Science.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 50Practice questions for this set
A simplified model shows a planet orbiting a star. At one point on the orbit, the planet has a forward-motion arrow tangent to the curved path and a gravity-pull arrow pointing toward the star. The model states: "Orbit results from gravity plus motion, not a single cause." Which statement is supported by the model? (Choose ONE.)
Choose an answer

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