Force Quiz

What is a force?

• A. A push or pull

• B. An investigation

• C. Movement

• D. A quiz

When an object is at rest, which of the following is true?

• A. There are no forces acting on the object.

• B. The forces acting on the object are unbalanced.

• C. The forces acting on the object are balanced.

• D. The object is moving.

In an experiment investigating the effect of different surfaces on the speed of a rolling ball, what is the independent variable?

• A. The speed of the ball

• B. The type of ball used

• C. The surface

• D. The size of the ball

The constant in a science experiment is something that—

• A. changes regularly.

• B. is the result of the experiment.

• C. stays the same throughout the experiment.

• D. is influenced by the results of the experiment.

In an investigation, students inflate a balloon attached to a straw threaded onto a string. When the balloon is released, it travels along the string. What might be the dependent variable in this investigation?

• A. The amount of air in the balloon

• B. The length of the string

• C. The size of the balloon

• D. The distance the balloon travels