A satellite orbits the earth instead of flying off into space because   a. gravity continuously pulls it towards the earth.     b. solar reflectors continuously push it towards the earth.     c. wind sails continuously push it towards the earth.     d. rocket thrusters continuously push it towards the earth.

1. You and a friend set up an umbrella and chairs at Torrey Pines State Beach. Your friend goes boogie boarding while you read a book. Half an hour later you are surprised to see that your friend has moved south, parallel to the beach. They are still boogie boarding the same distance from shore, in the surf zone. Why did your friend drift parallel to the beach? 2. The Sun is much more massive than the Moon, but the Moon has a bigger influence on Earth's tides than the Sun. Why is this? 3.  Even when there is no wind at the beach, we still see waves. What is the source of these waves? Do not include tides, mass movement, or earthquakes in your answer. 4. What causes ocean surface water to sink to the bottom and become deep water? Where does this happen?  5. How do you escape a Rip Current?

28. Which best describes the gravitational force? a.  linear function of distance   b. an infinite-range force c. applicable only to our solar system d.  sometimes repulsive

Which of the four fundamental forces acts over very long distances but does not cause planets in the solar system to pull on each other? O A. Weak nuclear B. Electromagnetic O C. Strong nuclear D. Gravitational