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4.2 Review
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4.2 Review

Which object has the orbit with the greatest eccentricity: Pluto. Which law describes the speed at which objects travel at different points in their orbits: law of equal areas. What does Kepler’s first law call the paths that planets follow as they orbit the sun? : ellipses. Kepler’s third law describes the relationship between the average distance of a planet from the sun and which property of the planet’s motion? : orbital period. Kepler’s second law states that equal areas are covered in equal amounts of time when an object does what? : orbits the sun. What effect does the elliptical orbit of the Earth around sun have? : The distance between Earth and the sun changes within the year.. According to Kepler’s first law, the orbit of a planet is an ellipse with what object at or near the focus? : . What is happening to the orbital velocity of Earth as it gets closer to the sun? : It is getting faster.. According to the law of gravitation, the force of attraction between two objects depends on two types of variables, one of which is the masses of the objects. Which is the other variable: distance between the objects. Which statement describes the motion of planets in their orbits around the sun? : Those farther from the sun move slower.. What happens to the gravitational force between a spacecraft and a planet if the orbital radius is doubled: It decreases by a factor of 4.

Grade:Grade 9_AI - Grade 12_AI
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