When is the longest night of the year in the northern hemisphere?

• June 21st
• Dec. 21st
• Mar. 21st
• Sept. 21st

When it is fall in the southern hemisphere, what season is it in the northern hemisphere?

• spring
• summer
• winter
• fall

What is the angle of the tilt of the earth?

• 23.5
• 25.3
• 28.5
• 23.8

How long does it take for the earth to orbit the sun?

• 365 1/4 days
• 24 hours
• 29 days
• 7 1/2 minutes

Spinning of Earth on its axis.

• Rotation
• Revolution

Movement of Earth around the sun.

• Rotation
• Revolution

Earth has seasons because.....

• Its axis is tilted
• Revolves around Saturn
• The sun revolves around Earth

What is revolution?

• a day were the sun appears farthest north of the equator once each year and farthest south each year
• the movement of one object around another

what is rotation?

• the spinning of earth on its axis
• the imaginary line that passes through earths center.
• the movement of one object around another
• when the sun goes around earth 4 times

what causes day and night?

• rotation
• revolution
• solstice
• equinox