1
2
100
Earth spinning is called
Rotating
100
How long does it take for Earth to complete a revolution?
One year
200
How long does it take for Earth to complete 1 rotation?
1 day
200
This illustration shows how the sun, Earth, and moon line up at certain times.
Why is the moon in a shadow?
Earth blocks sunlight from reaching the moon.
300
Earth orbits the sun. Yet the sun appears to move through the sky. For example, the sun always appears to rise in the east and set in the west. What is responsible for this apparent motion of the sun?
Earth's rotation
300
Which is the accurate representation of all three?
400
About how many rotations does Earth complete as it orbits once around the sun?
365
400
he following diagram shows Earth spinning on its axis.
What would happen if Earth spun on its axis faster than it does now?
A day would be shorter than 24 hr
500
A fourth-grader in Florida is in her science class. At the same time, a fourth-grader in China is getting a good night's sleep. What is responsible for it being daytime in Florida while it is nighttime in China?
Earth's rotation
500
Why are models useful for the study of the movements of the sun, the moon, and Earth?
Models can be used to make testable predictions.