Unit 2 Study Guide "Energy"

Bill says that batteries produce energy. What does he most likely mean?

• batteries convert chemical to electric energy.

• Batteries are the source of all energy.

• Batteries are the only way energy is stored.

• Batteries make energy from nothing.

Maria fills a glass with water and then places the glass in the sunshine. She measures the temperature every 10 minutes. What is she trying to answer?

• how long does it take water to evaporate

• how quickly will water cool off after being warmed up

• does energy from the sun heat up the water

• does glass heat up faster than water

When a television is turned on what is the energy transfomation?

• heat and light only

• sound and light only

• heat, sound, and electricity only

• heat, sound, light and electricity

What action would produce the most sound energy?

• warming food by a fire

• unplugging a cord from an outlet

• hitting a baseball with a bat

• turning on a flashlight

Anne's lamp is too bright in her bedroom. What could Anne do to control the brightness of the light bulb?

• use a bigger bulb

• take the light bulb out of the lamp

• change the amount of energy transferred to the bulb

• change the length of the wire to the bulb

A portable music player converts electricity to ____________.

• Light

• sound

• sound and light

• chemical

The energy of a wind turbine _________________.

• wind turbine stores energy

• energy from a wind turbine can be transferred to a hous for heat

Energy from a wind turbine _______________.

• more collisions between air molecules will move a wind turbine

• energy from a wind turbine can't be transferred to a house

engineer who is designing a new battery

• studies stored energy

• studies converting electricity to sound

engineer designing a new speaker system

• converting electricity to heat

• converting electricity to sound