A | B |
ROTATION | spinning on an axis |
REVOLUTION | going around something else |
15 DEGREES PER HR | how fast Sun appears to move across sky |
GEOCENTRIC MODEL | has Earth in center |
HELIOCENTRIC MODEL | has Sun in center |
FOUCAULT PENDULUM | weight hanging from wire that changes direction of swing |
CORIOLIS EFFECT | objects veer off to RIGHT in N. Hemisphere |
TIME ZONES | 15 degrees wide...each has its own time |
TIDES | cyclic rise and fall of ocean water |
SOLAR ECLIPSE | when the moon blocks out the Sun's light |