Energy

A metal pan is sitting on the stove. As the pan heats up, the handle starts to get hot, as well. This is an example of ________________.

• expansion

• radiation

• convection

• conduction

A student rubs two blocks of wood together. What kind of energy will be produced?

• light energy

• heat energy

• electrical energy

• nuclear energy

Metal is a conductor of heat.

• true

• false

Which of the following provides evidence that light energy can move from place to place?

• a flashlight turns on when the switch (on/off button) is moved

• a lightbulb gets hot when it is left on for a while

• the deepest parts of the ocean are very dark

• very distant stars can be seen in the night sky

When a potholder/oven mitten is used to remove hot pans from the oven, the potholder/oven mitten is serving as __________________.

• conductors

• insulators

• reflectors

• transmitters

Two campers put marshmallows on sticks. They held the sticks over a campfire. What type of energy cooks the marshmallows?

• electrical

• heat

• light

• mechanical

Carol washed her hair. She dried it with warm air from her blow dryer. Which statement BEST explains why the blow dryer was able to dry Carol's hair quickly?

• the blow dryer used electricity

• the blow dryer transferred heat

• the blow dryer created sound waves

• the blow dryer used mechanical energy

Which object is an insulator?

• aluminum

• water

• rubber

• copper

Bobby made a hot cup of tea and stirred it with a spoon. The spoon became warm. How was the heat from the tea transferred to the spoon?

• convection

• radiation

• conduction

• evaporation

When a drummer hits a drum with drumsticks, it makes a loud sound. Where does the energy that causes the sound come from?

• the moving drumstick

• the air around the drum

• the ear of the person hearing the sound

• the hands of the drummer