G5 Solar System

A________ occurs when an object blocks light.

• orbit

• shadow

• axis

• sundial

Why does a length and location of a shadow change over the course of the day?

• Because the change of the position of the Sun in the sky.

• Because the Sun changes its position.

• Because the shadows change and become longer at noon,

Earth completes one _____ around the Sun every year.

• hemisphere

• rotation

• seasons

• revolution

Day and night on Earth are caused by Earth's ______ on its axis.

• hemisphere

• rotation

• seasons

• revolution

Winter occurs in the _____ that is facing away from the Sun.

• hemisphere

• rotation

• seasons

• revolution

If Earth was not tilted on its axis, we would not have ______.

• hemisphere

• rotation

• seasons

• revolution

True or False?

The gravitational force between two objects decreases as their mass increases.

• True

• False

True or False?

As the distance between two objects decreases, the gravitational force between them increases.

• True

• False

The round rock that orbits Earth is called the ____.

• comet

• asteroid

• meteor

• Moon

Explain why we see only one side of the Moon.

• The Moon turns once on its axis in the same time that it circles Earth.

• The Moon turns around Earth when it is a full Moon.

• We can see the Moon when it is in the New Moon phase.