Chapter 9 Review Questions

If somehow the moon were moved to a distance twice as far away from the earth as it is now, the force that the earth has for the moon would

(a) be twice what it is now

(b) be one half of what it is now

(c) be four times greater than it is now

(d) be one fourth as much as it is now

What must be the phase of the moon if neap tides are occurring?

(a) first quarter

(b) full

(c) lunar eclipse

(d) new

Newton said that the path of a planet curves because a force acts on it. Why does a planet's path curve according to Einstein?

(a) because a force acts on it

(b) because it is spinning

(c) because it is in a geometric warp of space and time