Universal Gravitation

3. the condition of free fall toward or around the earth, in which an object experiences no support force
5. that which exists in the space surrounding a mass, electric charge, or magnet, so that another mass, electric charge, or magnet introduced to this region will experience a force
6. a force field that exists in the space around every mass or group of masses
8. the cutoff of light from the full moon when the earth is directly between the sun and moon, so that the earths shadow is cast on the moon
9. the cutofff of light from the sun to an observer on the earth when the moon is directly between the sun and earth
11. a physical quantity caries inversely as another quantity squared

1. a tide that occurs when the moon is halfway between a new moon and a full moon the high tide is lower than average and the low tide is higher than average
2. the constant G in the equation for Newtons law of universal gravitation it measure the strength of gravity
4. for any pair of objects, each object attracts the other object with a force that is directly proportional to the product of the masses of the objects, and inversely proportional to the square of the distance between their centers of mass
7. a mass that has collapsed to so great density that is enormous local gravitational field prevents light from escaping
10. the deviation of an orbiting object from its path around the center of force caused by the action of an additional center of force
12. a high or low tide that occurs when the sun, earth, and moon are all lined up so that tides due to the sun and moon coincide making the high tides higher than average and low tides lower than average