Sun Moon Earth How do they work together

Sun, Moon, Earth, How do they work together to help life survive? Day and Night

Days and Years • Astronomy

Days and Years • Astronomy – Study of the moon, stars and other objects in space.

Rotation • Earth rotates counter clockwise into the sun’s light if you are looking down on the North pole (night and day).

Rotation • Earth rotates counter clockwise into the sun’s light if you are looking down on the North pole (night and day). • Axis: 23½º (tilt)

Rotation • Earth rotates counter clockwise into the sun’s light if you are looking down on the North pole (night and day). • Axis: 23½º (tilt) –Imaginary line that passes through Earth’s center at the N & S Poles.

Earth’s Rotation • At the equator the Earth has a circumference of 40, 070 km.

Earth’s Rotation • At the equator the Earth has a circumference of 40, 070 km. • Rotates once in 24 hours.

Earth’s Rotation • At the equator the Earth has a circumference of 40, 070 km. • Rotates once in 24 hours. • This means that the speed of the Earth at the equator is 1, 670 km/hr (1, 070 miles/hr).

Earth’s Rotation • At the equator the Earth has a circumference of 40, 070 km. • Rotates once in 24 hours. • This means that the speed of the Earth at the equator is 1, 670 km/hr (1, 070 miles/hr). – At 45 degrees N and S The speed is 1, 180 km/hr.

Earth’s Rotation • At the equator the Earth has a circumference of 40, 070 km. • Rotates once in 24 hours. • This means that the speed of the Earth at the equator is 1, 670 km/hr (1, 070 miles/hr). – At 45 degrees N and S The speed is 1, 180 km/hr. – Winston Salem, NC the speed is about 1, 367 km/hr.

Facts and Myths • The sun rises and sets.

Facts and Myths • The sun rises and sets. – Myth

Facts and Myths • The sun rises and sets. – Myth • The Earth rotates in and out of the sun’s light.

Facts and Myths • The sun rises and sets. – Myth • The Earth rotates in and out of the sun’s light. – Fact

Facts and Myths • The sun rises and sets. – Myth • The Earth rotates in and out of the sun’s light. – Fact • The sun moves across the sky

Facts and Myths • The sun rises and sets. – Myth • The Earth rotates in and out of the sun’s light. – Fact • The sun moves across the sky – Myth

Facts and Myths • The sun rises and sets. – Myth • The Earth rotates in and out of the sun’s light. – Fact • The sun moves across the sky – Myth • We spin under the light of the sun.

Facts and Myths • The sun rises and sets. – Myth • The Earth rotates in and out of the sun’s light. – Fact • The sun moves across the sky – Myth • We spin under the light of the sun. – Fact

Rotation vs. Revolution • Rotation is the spin of an object about its axis.

Rotation vs. Revolution • Rotation is the spin of an object about its axis. –The Earth rotates once a day (once every 24 hours).

Rotation vs. Revolution • Rotation is the spin of an object about its axis. –The Earth rotates once a day (once every 24 hours). • Revolution is the orbit of one object around another.

Rotation vs. Revolution • Rotation is the spin of an object about its axis. –The Earth rotates once a day (once every 24 hours). • Revolution is the orbit of one object around another. –The Earth revolves around the Sun every 365. 26 days.

Day Night Cycle