Gravitational Force and Brightness

What causes the moon to stay in orbit around the Earth?

• Wind force

• Gravitational force

• Magnetic force

• Electromagnetic force

Which of the following best describes "force"?

• A measure of light emitted

• A push or pull exerted on an object

• A repeated pattern

• A seasonal change

What does "downward" mean?

• Toward the center of the Earth

• Away from the ground

• Moving in a circular motion

• Moving parallel to the surface

The _________ brightness of stars depends on their distance from Earth.

• Graphical

• Apparent

• Relative

• Seasonal

What is "brightness" a measure of?

• Speed of an object

• Light emitted or reflected by an object

• Gravitational pull

What does "graphical" refer to?

• Sound waves

• Data shown in visual representations

• The force of gravity

• Seasonal weather patterns

"Seasonal" changes are caused by:

• The moon's orbit

• Earth's position in its orbit

• The apparent brightness of stars

• Patterns in gravitational pull

What is a "shadow"?

• A bright light

• A force pulling objects downward

• A dark area caused by an object blocking light

• A repeated pattern

Fill in the blank: The term "relative" is often used to describe something that is _______ to something else.

• Absolute

• Fixed

• Compared

• Unrelated

Fill in the blank: The apparent motion of the sun is due to Earth's _______.

• Orbit

• Rotation

• Seasonal changes

• Brightness