Energy Transfer and Sound Waves Assessment - Grade 4

When two objects collide, energy is transferred through:

• sound only

• heat and motion

• light only

• magnetic force

Which material conducts sound the best?

• air

• wood

• metal

• cotton

Which statement about sound waves is true?

• They need a medium to travel

• They can travel through space

• They move matter permanently

• They produce light

When you clap your hands, energy transfers through:

• magnetic fields

• air vibrations

• chemical reactions

• electrical currents

Sound waves cannot travel through:

• water

• metal

• vacuum

• wood

The speed of sound depends on:

• the color of the object

• the time of day

• the medium it travels through

• the direction of wind only

Which item would be the best insulator for keeping a drink cold?

• Styrofoam cup

• Aluminum can

• Glass container

• Metal bucket

Which material would be best for making electrical wires?

• String

• Gold

• Paper

• Plastic

Why don't birds get electrocuted when sitting on power lines?

• Birds have special feet

• Power lines aren't real

• Birds are too light

• They're not touching the ground

Which would conduct heat the fastest?

• Cotton ball

• Wooden spoon

• Metal pan

• Plastic fork