Earth's Cycles

To spin

• axis
• rotate
• revolve 
• orbit

To move around something

• axis
• orbit
• rotate
• revolve

The path something takes as it travels around something else

• axis
• orbit
• revolve
• rotate

The imaginary line that the Earth spins on

• axis
• Equator
• rotate
• revolve

How many days does it take for the Earth to revolve around the sun?

• 12
• 24
• 356
• 365

Earth's axis is tilted at which angle?

• 23.5
• 90
• 42.3
• 12

How many hours does it take for Earth to rotate once on its axis?

• 12
• 24
• 48
• 72

What affects the amount of direct sunlight Earth receives on a single day and throughout the year?

• Earth's tilt
• Position of the moon
• Earth's rotation
• Distance of the sun

What is the date and season for the image shown?

• Dec. 21 - winter
• Dec. 21 - summer
• June 21 - winter
• June 21 - summer

Fill in the blank. Winter is colder than summer because...

• Earth's axis is more tilted.
• days are shorter and the Sun's rays are less direct.
• Earth is farther from the Sun.
• the Sun emits less energy.