Force, Motion, & Energy

Match each word with the correct definition.

• the ability to do work

• Energy

• energy we can see

• Thermal

• energy we can hear

• Mechanical

• heat energy

• Sound

• energy of motion

• Light

Rachel is making a list of ways that mechanical energy is used everyday. Which of the following does not belong on her list?

• Chewing Gum

• Riding a bike

• Watching TV

• Cleaning the Kitchen

Marcus is creating a poster all about using sound and light energy. Which image does not belong on his poster?

• A

• B

• C

• D

If the wire is cut at the position marked by an X, how many bulbs will remain lit?

• 0

• 1

• 2

• 3

Look at the circuit below. Which statement explains why the bulbs are not lighting up?

• The bulbs are not part of the circuit and need to be connected.

• The battery is incorrectly connected to the circuit.

• The circuit needs more wires to connect both bulbs.

• A switch needs to be added to control the current.

Students built the circuit shown. Where can a wire be added so that all lightbulbs will light?

• Between the battery and lightbulb 3

• Between lightbulb 3 and lightbulb 1

• Between lightbulb 2 and lightbulb 3

• No wire is needed, just a switch

Match each word with the correct definition.

• Opaque

• allowing all, or almost all, light to pass through

• Refraction

• the bouncing back of light off of a material

• Translucent

• the bending of light as it passes through a new medium

• Reflection

• allowing no light to pass through

• Transparent

• allowing some light to pass through

Which statement best explains what is happening in the picture?

• Light travels in a straight line

• Light can be reflected when it moves through water.

• Light rays bend when they move through different materials.

• Light can be refracted when it bounces off the surface of water.

Match each word with the correct definition.

• variable

• a push or pull due to magnetic forces

• investigation

• a push or a pull

• magnetism

• a factor that changes in an investigation

• force

• a force that resists motion

• friction

• a set of steps followed to answer a testable question

Does the size of the wheel on a toy car affect how far the toy car will travel?

• Size of wheel: independent variable

• Size of wheel: dependent variable