Energy Review

An object at rest has ________ energy. A moving object has ________ energy. (Fill in the blanks)

• potential; kinetic

• kinetic; potential

• thermal; chemical

• chemical; thermal

The more energy an object has, the ________ the object will move.

• faster

• slower

• heavier

• smaller

If an object changes speed it is called ________. For an object to change speed, there has to be a change in energy.

• acceleration

• friction

• gravity

• momentum

Two identical balls are rolled down ramps of the same length. Ball A travels faster than Ball B. Choose the answer that could explain which ball has more energy and why.

• Ball B because it experienced more friction.

• Ball A because more force was applied when rolled.

• Ball B because it weighed less.

• Ball A because it had less potential energy.

If performing an investigation to measure how far a toy car rolls down a ramp, where on the ramp should the toy car be released to make it go the farthest?

• The top of the ramp

• The middle of the ramp

• The bottom of the ramp

• Flat on the ground

The faster a car travels, the more gas it uses. Which statement below explains why?

• The faster a car travels, the less energy it needs.

• The faster a car travels, the more energy it needs.

• The faster a car travels, the more friction it needs.

• The faster a car travels, the more time it needs.

What does it mean when energy is transferred?

• It is created from nothing

• It is destroyed

• It is moved from one object to another

• It changes from one form to another

When a firework is set off, chemical energy is transformed into what types of energy?

• Sound only

• Light only

• Sound and light

• Sound, heat, and light

Our bodies convert food into usable energy. What type of energy is food an example of?

• Chemical

• Mechanical

• Solar

• Electrical

What energy transformation happens when a toaster is turned on?

• Solar energy to heat energy

• Electrical energy to heat energy

• Heat energy to electrical energy

• Electrical energy to solar energy