Devices & Energy: Practice Assessment

Electricity is the movement of particles. What is special about the particles?

• SHAPE

• SIZE

• CHARGE

• POSITION

When Amy boils water in a metal pot and she puts her hand on the pot's handle, her hand becomes warmer. Which statement correctly describes the energy transfer?

• Heat moves from the burner to her body by conduction. It moves through the water by radiation.

• Heat moves from the handle to her hand by conduction. It moves from the burner to her body by radiation.

• Heat moves through the water by conduction. It moves from the burner to her body by conduction.

• Heat moves from the burner to her body by conduction. It moves from the handle to her hand by radiation.

You have a hot chocolate and sit by the fireplace. After a minute, your body feels warm from the fire. Your hands feels warm from the hot chocolate. Which statement describes the movement or heat energy?

• It moved by conduction from the hot chocolate to your hand and from the fire to your body.

• It moved by the radiation from the hot chocolate to your hand and from the fire to your body.

• It moved by conduction from the hot chocolate to your hand and by radiation from the fire to your body.

• It moved by radiation from the hot chocolate to your hand and by conduction from the fire to your body.

An internal combustion engine is designed to convert the chemical energy in fuel into____.

• light

• heat

• sound

• motion

Most of the energy produced by living things is lost in the form of _____.

• sound

• electricity

• light

• heat