Across
- 1. He discovered the laws that describe the motion of every planet and satellite.
- 7. The force of attraction between two objects must be proportional to the object's masses and is known as ________ force.
- 9. This laws states that the square of the ratio of the periods of any two planets revolving around the Sun is equal to the cube of the ratio of their average distances from the Sun.
- 13. The _____ of the ratio of the period of planet A to the period of planet B is equal to the cube of the ratio of the distance between the centers of the planet A and the Sun to the distance between the centers of planet B and the Sun.
- 15. Intertial mass is equal to the net force exerted on the object divided by the acceleration of the object.
- 16. He proposed the law of universal gravitation.
- 17. The law of _____ _____ states that objects attract other objects with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them.
- 19. This law states that an imaginary line from the Sun to a planet sweeps out equal areas in equal time intervals.
Down
- 2. The letter T is used to represent a ______.
- 3. This early English scientist used equipment similar to an apparatus to measure the gravitational force between two objects.
- 4. This was thought to be the center of the universe in ancient times.
- 5. The gravitational mass of an object is equal to the distance between the centers of the objects squared, times the gravitational force, divided by the product of the universal gravitational constant, times the _____ of the other object.
- 6. He proposed that gravity is not a force but rather an effect of space itself.
- 7. This is the mass that is the quantity that measures an object's response to gravitational force.
- 8. The gravitational ____ strength produced by an object is equal to the universal gravitational constant times the object's mass, divided by the square of the distance from the object's center.
- 10. _____ mass of an object is a measure of the object's resistance to any type of force.
- 11. The ___ of a planet orbiting the Sun is equal to 2 pi times the square root of the average distance from the Sun cubes, divided by the product of the universal gravitational constant and the mass of the Sun.
- 12. This law states that the paths of the planets are ellipses with the Sun at one focus
- 14. Newton's ____ laws can be rewritten to account for m as the mass of the planet and a as the centripetal acceleration.
- 18. The ____ of a satellite orbiting Earth is equal to the square root of the universal gravitational constant times the mass of Earth, divided by the radius of the orbit.