Gravity in the Solar System
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is gravity?
Back
Gravity is a force that attracts two bodies toward each other, depending on their masses and the distance between them.
2.
FLASHCARD QUESTION
Front
What is the speed of Earth's orbit around the sun?
Back
Earth moves around the sun at a speed of approximately 30 km/s.
3.
FLASHCARD QUESTION
Front
What is a scale model?
Back
A scale model is a physical representation of an object that maintains accurate relationships between its dimensions.
4.
FLASHCARD QUESTION
Front
Why do planets have a nearly spherical shape?
Back
Planets are nearly spherical due to gravitational forces pulling matter toward their centers.
5.
FLASHCARD QUESTION
Front
What is the strongest gravitational force?
Back
The gravitational force on a baseball from Earth is the strongest compared to other nearby objects.
6.
FLASHCARD QUESTION
Front
What is an astronomical unit (AU)?
Back
An astronomical unit (AU) is a unit of measurement equal to the average distance from the Earth to the Sun, approximately 93 million miles.
7.
FLASHCARD QUESTION
Front
How does gravity affect the motion of planets?
Back
Gravity keeps planets in orbit around the sun by pulling them toward it while they move forward.
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