Energy Practice Quiz

Which energy transformation occurs when a match is lit?

• chemical to heat energy

• heat to potential energy

• electrical to heat energy

• kinetic to potential

A girl threw a ball. As the ball moves through the air, what type of energy does it have?

• heat energy

• chemical energy

• electrical energy

• mechanical energy

Energy that flows through an electrical circuit is ____________ energy?

• chemical

• electrical

• heat

• solar

A falling rock has kinetic energy. Where does that kinetic energy go when it hits the ground and stops?

• It is reduced until it disappears

• It is converted into potential energy again

• It is converted into heat and sound

• It is converted into matter

In an investigation, a ball was released from the three difference positions shown. The speed of the ball was measured at the bottom of the ramp, after the ball was released from each position.

Why was the speed greatest when the ball was released from the top position "1"?

• The ball lost energy to the environment as it rolled down the ramp.

• The ball had more potential energy at the top of the ramp.

• The ball gained potential energy as it rolled down the ramp.

• The ball had more kinetic energy at the top of the ramp.

A student wound up a propeller in the toy plane shown. After he wound it up, he let it go.

What energy transformation occurred when he released the propeller?

• Gravitational potential energy transformed into kinetic energy.

• Elastic potential energy transformed into kinetic energy.

• Chemical kinetic energy transformed into spinning kinetic energy.

• Elastic kinetic transformed into spinning kinetic energy.

Which of the following is an example of friction converted into heat energy?

• the sun

• a snickers bar

• a generator

• rubbing your hands together

What type of energy is stored in batteries or food?

• Potential energy

• Thermal energy

• Chemical energy

• Mechanical energy

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and velocity
• Mass and velocity
• Height and friction 

T/F Mechanical energy is the sum of _______________energy and ______________ energy in a system.

• thermal and nuclear
• kinetic and chemical
• potential and  kinetic
• nuclear and radiant