Plate tectonics is unique to which terrestrial planet?
a. mars
b. earth
c. venus
d. mercury

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than