Gravity and Orbits Answer Key
Investigate how gravity governs the motion of planets, moons, and satellites in orbit.
Looking for Gravity and Orbits answers? This complete answer key provides verified solutions for all student exploration activities and assessment questions in the ExploreLearning Gravity and Orbits Gizmo.
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Prior Knowledge Questions
Q1.What is gravity?
Gravity is a force of attraction between objects with mass. The greater the mass, the stronger the gravitational pull.
Q2.Who first described the law of universal gravitation?
Sir Isaac Newton first described the law of universal gravitation in 1687.
Activity A – Orbital Motion
Q3.What keeps planets in orbit around the Sun?
Gravity from the Sun pulls planets inward while their forward velocity keeps them moving in a curved path, resulting in a stable orbit.
Q4.How does distance affect gravitational force?
Q5.What is the difference between mass and weight?
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