Motions of the Earth Lesson

sidereal; solar

solar; sidereal

aphelion

perihelion

increases

decreases

North Star

UY Scuti

Alpha Centauri

Proxima Centauri

botany

cosmology

astrology

some places will be farther from the sun while some will be nearer.

gravitational pull of sun varies because of the tilt of axis of rotation.

different portions of the earth receives different amounts of sunlight.

are unusually long.

are the same duration.

Position 1

Position 2

Position 3

Position 4

Earth is closest to the sun

Earth’s axis is pointed towards the Sun

Earth’s axis is pointed away from the Sun

Earth is at its farthest distance from the Sun

$$23.5\degree$$  

$$32.5\degree$$

$$2.35\degree$$

$$15.6\degree$$