Intro to Space Systems Exploration Pretest

Front

What is the reason Earth can support life?

Back

Earth has sufficient gravity to hold an atmosphere, which is essential for life.

Front

What causes the moon to have phases?

Back

The phases of the moon are caused by the moon's rotation and revolution around the Earth.

Front

What season is experienced in the Northern Hemisphere when the North Pole is tilted towards the Sun?

Back

Summer.

Front

What is the term for the Earth's movement around the Sun?

Back

Revolution.

Front

How does distance affect gravitational pull between two objects?

Back

Objects with greater distance from each other will have less gravity.

Front

What is the primary source of radiant energy for Earth?

Back

The Sun.

Front

What is the effect of Earth's rotation on day and night?

Back

Earth's rotation causes the cycle of day and night.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of Earth on its axis, while revolution is the movement of Earth around the Sun.

Front

What is the significance of the tilt of Earth's axis?

Back

The tilt of Earth's axis is responsible for the changing seasons.

Front

What happens to the gravitational pull if the mass of an object increases?

Back

If the mass of an object increases, the gravitational pull it exerts also increases.