Which statement best describes the energy in this system?
The diagram shows a ball resting at the top of a hill.
X Y
A The potential energy in the system is greatest at X.
B The kinetic energy in the system is greatest at X
C Total energy in the system decreases as the ball moves
from X to Y.
D Total energy in the system increases as the ball moves
from X to Y
Y

Which of the following characteristics of earth's relationship to the sun explains the existence of earth's seasons? choose all that apply. earth has a satellite called the moon, which rotates around earth. earth spins on its axis, completing one rotation each day. earth's axis always points in the same direction relative to the stars. earth's axis is tilted relative to its orbital plane. earth orbits around the sun, completing one orbit each year.