Unit 3 - Investigating Energy (Grade 2)

What will happen if the sound energy is decreased on the car radio?

• The radio will become quieter.

• The radio will become louder.

• The radio will become dimmer.

A student hears the sound of a television coming from another room. What will happen if the student walks closer to the television?

• The sound he hears will decrease.

• The sound he hears will increase.

• The sound he hears will not change.

Some children are playing outside on a sunny day. Their red ball looks bright red in the sunshine. About 6:00 PM the Sun starts to set.

Now how does the ball look?

• The ball looks less bright.

• The ball looks brighter.

• The ball looks the same.

What can happen to water when you decrease the thermal (heat) energy?

• The water can freeze.

• The water can boil.

• The water can get hot.

What is the effect of increasing light?

• Materials will get colder.

• Objects are easier to see.

• The amount of sound increases.

Light, heat, and sound are all examples of _____.

• matter

• force

• energy

In the summer, a family parked their car in the Sun while shopping in the grocery store. When returning to the car, the seatbelt buckle and steering wheel burned their hands.

Which statement below best explains why this occurred?

• Light energy from the Sun decreased the temperature inside the car.

• Thermal (heat) energy from the sunlight decreased the temperature inside the car.

• Thermal (heat) energy from the sunlight increased the temperature inside the car.

A girl was making dinner for her family. She began by putting part of a stick of butter in a pan that was on the stove.

If she increases the thermal (heat) energy of the stove, what will happen?

• The butter will get harder.

• The butter will remain unchanged.

• The butter will melt.

What is needed for a drum to increase its sound?

• hit the drum softer

• hit the drum slower

• hit the drum harder

A student is studying light. What question could be tested in an investigation?

• How does the amount of light affect sight?

• What are the different types of light?

• How do nocturnal animals see in the dark?