Summary
Defines gravity as the force that pulls objects toward each other, explains why Earth's gravity keeps us on the ground, and introduces the relationship between mass and gravitational pull.
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All ages
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Teaching resources
Discussion questions
Discussion
- What is gravity? Where does it come from?
- Why don't we float off the ground?
- Does gravity affect a feather and a rock the same way in a vacuum? What about in air?
- What would daily life be like if Earth's gravity were suddenly cut in half?
Quick work-a-long
Vocabulary: gravity, force, mass, pull, attract.
Try it: Drop a pencil and a crumpled piece of paper from the same height at the same time. What do you observe? What role does gravity play? What role does air resistance play?