Module 2 Test Review

Front

What causes day and night on Earth?

Back

Earth's rotation on its axis

Front

How long does it take for Earth to complete one rotation?

Back

24 hours

Front

How long does it take Earth to complete one revolution around the sun?

Back

365 1/4 days

Front

Why do we add February 29th to the calendar every four years?

Back

To account for the extra 1/4 day in Earth's revolution

Front

What is Earth's axis?

Back

The imaginary line running through the North and South Poles

Front

What happens when a location tilts toward the sun?

Back

It receives more solar energy and warmer temperatures

Front

What causes Earth's seasons?

Back

Earth's tilt as it orbits the sun

Front

What happens during spring and fall?

Back

Poles tilt neither toward nor away from the sun.

Front

How are seasons in the tropics different from seasons in North America?

Back

Seasons are marked by rainfall rather than temperature.

Front

What percentage of Earth's water is salt water?

Back

97%