Earth's Motion and Time Scales

During which season is the sun's rays most direct in the northern hemisphere?

• winter

• spring

• summer

• fall

The southern hemisphere is located

• north of the equator

• south of the equator

• on the equator

• china

the rotation of the earth eastward causes

• the seasons

• day and night

• dizziness

• earthquakes

The sun appears to move across the sky. This apparent motion of the sun is caused because Earth is

• rotating on its axis

• revolving around the sun

• much smaller than the sun

• tilted on its axis

Earth's orbit is shaped like

• an ellipse

• a rectangle

• a triangle

• all of the above

The length of a year is equivalent to the time it takes for the

• Earth to orbit the moon

• Earth to rotate, once

• Earth to orbit the sun

• the moon to orbit the Earth