Balancing Forces: Chapter 3 Quiz

____________ is the pull between Earth and other objects, which acts even without touching.

Gravity is what kind of force?

• Non-touching

• Touching

Is gravity an attracting force or a repelling force or both?

• attracting force only

• repelling force only

• both attracting and repelling

Gravity pulls objects...

• to the right

• to the left

• toward the center of the earth

The chart below shows forces and the objects in which the forces act between. Select the object that is missing.

• air

• Earth

• the ground

• any other object

What effect does Earth's gravity have on us?

• It lets us float.

• It pulls us to the Earth.

• We are too small for it to affect us.

• It moves us around in a circle.

This guy hits a baseball. Predict the path of the baseball after it goes up into the air.

• It will stay in the air forever.

• It will come back down.

• It will go backwards.

All of these are moving in the direction of the pull of gravity EXCEPT...

• A rock rolling down the slope of a mountain.

• Rain falling straight down from the sky.

• A helium balloon rising into the air.

Which of the following are forces that could move a soccer ball across a floor?

• gravity

• magnetic force

• a push or a pull