Earth, Moon and Sun Objectives 6.E.1.1, 1.2, and 1.3

What causes day and night?

• Earth's rotation

• Earth's revolution

• Eclipses

• Earth's moon

What causes seasons?

• Earth's tilt as it rotates around the sun.

• Earth's tilt as it revolves around the sun.

• Eclipses

• Earth's moon

What causes tides?

• Earth's tilt as it rotates around the sun.

• Earth's tilt as it revolves around the sun.

• Eclipses

• Earth's moon

What causes tides?

• Earth's tilt as it rotates around the sun.

• Earth's tilt as it revolves around the sun.

• Eclipses

• Gravity from the moon pulling on the earth and the oceans as it revolves and the Earth rotates.

What causes spring tides?

• Earth, moon and sun all in a straight line.

• Earth's tilt as it revolves around the sun.

• Earth, moon and sun at a 90 degree angle to one another.

• Asteroids

What causes neap tides?

• Earth, moon and sun all in a straight line.

• Earth's tilt as it revolves around the sun.

• Earth, moon and sun in shadows..

• Earth, moon and sun not lined up.

Why don't eclipses occur every month?

• The moon's orbit around Earth is tilted at a 5 degree angle compared to Earth's orbit around the sun.

• It takes the moon 27.3 days to revolve around Earth.

• It takes the moon 29.5 days to go through a complete set of phases.

• Little green aliens.

What causes the phases of the moon?

• The moon's orbit around Earth is tilted at a 5 degree angle compared to Earth's orbit around the sun.

• It takes the moon 27.3 days to revolve around Earth.

• It takes the moon 29.5 days to go through a complete set of phases.

• One half of the moon is almost always lit, but the amount of the lighted side we can see from Earth changes as the moon revolves around us.

How much of the moon is lit when we see the crescent moon?

• 2/3

• 3/4

• One quarter.

• One half of the moon..

How is Earth specially suited for life? Pick all that apply!

• Right distance from sun.

• Large amounts of water in all 3 states of matter.

• 23 1/2 degree tilt

• Right amount of oxygen.

• 24 hour rotation