Energy Review 2025

Victoria grows the same bacteria in 20 Petri dishes. She places 10 of the dishes in a container with a normal atmosphere. The remaining dishes she places in a container in a different atmosphere. If the atmosphere is changed, what variable is being described?

• Control group

• Independent Variable

• Dependent Variable

• Control Variable

A hypothesis is an educated guess that scientists use to predict the outcome of their experiment. What two important words are used in a hypothesis?

• Maybe; Might

• If; Then

• Probably; Definitely

• If; Might

Used the Word Bank Below to fill in the blanks. Energy can _______ forms but it is never _______. This law means that energy can not be _______, nor _______; rather, it can only be _______ or transferred from one form to another.

(a)   ​ (b)   ​ (c)   ​ (d)   ​ (e)  

• Change
• lost
• created
• destroyed
• transformed

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

You charge your cell phone at the beginning of the day. At the end of the night, your phone’s battery is at 0 percent after you watched a movie on your phone. Does this violate the Law of Conservation of Energy? Select the best answer choice.

• Yes, the energy disappeared

• Yes, the chemical energy transformed into solar energy and elastic energy.

• No, the chemical energy transformed into electrical, radiant energy and sound energy.

• No, the energy evaporated into the atmosphere.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A trampoline is an example of ______ potential energy and another example would be a ____.

• elastic; rubber band
• kinetic; windmill

• chemical; battery

• gravitational; roller coaster

Tags

NGSS.MS-PS3-2

A potential energy that is stored in the nucleus of an atom, you can find this form of energy in a nuclear power plant or in an atom bomb. What form of energy is being described?

• Chemical

• Nuclear

• Gravitational

• Kinetic

Tags

NGSS.HS-PS1-8

Burning logs in the fireplace produce both heat and light energy. The logs, before burning, were a source of

• elastic potential energy

• chemical potential energy

• electrical potential energy

• gravitational potential energy

The rock on the top of the pile has the greatest ________ potential energy compared to all the other rocks.

• gravitational
• falling

• elastic

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

An object that has kinetic energy must be

• at an elevated position.

• in motion.

• at rest.

• stopped.

As a roller coaster goes downhill

• potential energy is converted into kinetic energy.

• kinetic energy is converted into potential energy.

• potential energy is converted into electrical energy.

• electrical energy is converted into potential energy.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5