Grade 4/ Lesson 1: Forces and Motion Quiz

How can you determine the speed of a moving train?

• Divide the distance traveled by the time spent moving.

• Divide the time spent moving by the direction traveled.

• Multiply the distance traveled by the time spent moving.

• Multiply the kinetic energy by the distance traveled.

An object that is sitting still has forces acting on it.

• balanced

• unbalanced

A boy pushes on a box and moves it across the room. This is an example of _____.

• balanced forces

• unbalanced forces

• potential energy

• chemical energy

Objects in motion tend to stay in motion because of the property of .

• inertia

• gravity

Dana is the pitcher for her community baseball team. What force causes the baseball to change direction when it is hit by the bat?

• The catcher’s force on the ball with his mitt.

• The batter’s force on the ball as he misses.

• The pitcher’s force on the ball as he throws.

• The batter’s force on the ball with the bat.

The distance traveled in an amount of time is called ______.

• Speed

• Velocity

• Acceleration

• Friction

describes when a moving object speeds up.

• Acceleration

• Velocity

If you drop a rock in a lake, the rock will slow down because the water exerts ____.

• gravity

• less resistance

• drag forces

• velocity

What causes heat when rubbing your hands together?

• Velocity

• Speed

• Gravity

• Friction