Front

Ryan rubs two sticks together quickly. When he stops rubbing the sticks, he notices that they are warm to touch where he rubbed them. Which type of energy has been produced?

Back

heat energy

Front

Which types of energy does a light bulb give off?

Back

light and heat

Front

How does the heat of the sand affect a lizard’s body as it comes out of the shade?

Back

The lizard’s body temperature increases.

Front

The students in Miss Zunz’s class are learning about how different forms of energy are used. They make a chart as shown below.
Electric energy: computer, freezer
Heat energy: ?
Energy of motion: roller coaster, swing set
Which of these best completes the students’ chart?

Back

campfire, stove

Front

Which of the following will cause the fastest change in temperature of an ice cube?
Options: ice cube in a pot of cold water, ice cube in a pot of warm water, ice cube in a pot of boiling water, ice cube on a plate at room temperature

Back

ice cube in a pot of boiling water

Front

George holds an ice cube in his hand. As he squeezes the ice, it begins to melt. Which of the following best explains why this happens?

Back

Heat moves from Abdul’s hand into the cube and warms it.

Front

Which of the following must be present for heat to flow from one substance to another? Options: One of the substances must always be a solid., One of the substances must always be a liquid., The substances must be at different temperatures., The substances must be at the same temperature.

Back

The substances must be at different temperatures.

Front

Why are Debbie's mother's pots made of copper, aluminum, and glass?

Back

They are good conductors of heat.

Front

Chelsea is making hot cocoa. She wants to keep her cocoa warm. Which cup would NOT be a good choice to keep her drink warm? Options: foam, glass, metal, paper

Back

metal