How is Earth tilted in the summer?

• toward the sun
• Earth is not tilted.
• away from the sun
• sideways to the sun

How is Earth tilted in winter?

• toward the sun
• Earth is not tilted.
• away from the sun
• sideways to the sun

What season is it in the Southern Hemisphere when it is winter in the Northern Hemisphere?

• fall
• summer
• spring
• winter

What is the term for Earth spinning on its axis?

• month
• revolution
• rotation
• year

What is the term for Earth moving around the sun?

• day
• month
• revolution
• rotation

Why do scientists believe the Earth’s spin is slowing?

• The crust is slipping.
• The sun is getting closer.
• The ocean keeps moving.
• The moon’s gravity pulls on the Earth.

Why does Earth have day and night?

• It tilts.
• It bulges.
• It rotates.
• It revolves.

What is night?

• watching the sunset
• orbiting Earth quickly
• facing toward the sun
• facing away from the sun

What would happen if the Earth stopped spinning?

• There would be no day.
• There would be no night.
• The moon would crash into it.
• One half of Earth would always be light.

When do the days get shorter?

• going into winter
• going into summer
• when the Earth tilts
• when the moon is full