Earth-Sun Relationship

Why are there 365 1/4 (365.25) days in a year?

• Earth's rotation takes this long.
• The tilt of the Earth.
• Earth's revolution takes this long.
• Our tilt is 23 degress.

Day and night are caused by 

• Earth's revolution around the sun
• Earth's rotation on its axis
• the tilt of the earth
• Earth's involvement in eclipses

A year is measured by

• Earth's revolution around the sun
• Earth's rotation on its axis
• the tilt of the earth
• Earth's involvement in eclipses

How long does it take for the earth to complete one rotation?

• 365 1/4 days
• 24 hours
• 30 days
• one decade

When the Northern Hemisphere is pointing towards the sun, what season is the Southern Hemisphere?

• Winter
• Spring
• Fall
• Summer

What causes the seasons to change?

• The Earth's distance from the Sun
• The waming and cooling of Earth's core
• The Earth's tilt in relation to the sun
• The Earth rotation on its axis.

How are winters in the Northern Hemisphere different from winters in the Southern Hemisphere?

• Winter days are short in the Northern Hemisphere, and long in the Southern Hemisphere
• Northern Hemisphere winters are cold, Southern Hemisphere winters are hot
• In the Northern Hemisphere, winter lasts from December to March; In the South, it lasts from June to September
• In the Northern Hemisphere winter lasts from June to Septermber. In the South it lasts from December to March.

Why does the area around the equator stay the same temperature year-round?

• It remains the same distance from the sun year round.
• It recieves the same amount of direct sunlight year round.
• Its days are more than 18 hours long year round
• The equator rotates slower than the poles

Which word describes the seasons at the North and South Poles?

• cold
• It receives the same amount of direct sunlight year round.
• extreme 
• mild

Imaginary line through the center of the earth (from the north pole to south pole)

• axis
• orbit
• pole
• tilt