Forms of energy and energy changes

Energy can be described as the ability to _______.

• hold your position.

• heat up.

• stay the same.

• make things happen, and cause changes.

Wood and charcoal contain stored ______________ energy.

• chemical

• potential

• nuclear

Which statement is true?

• Energy never changes.

• Energy is never released as heat.

• Energy is neither created nor destroyed.

Which statement is false?

• The amount of energy before an energy transfer is the same as the total amount of energy after that energy transfer.

• Energy can be converted from one form to another.

• During an energy transfer, no energy is converted to wasted output energy.

• During an energy transfer, an energy changer changes one form of energy into another form / other forms of energy.

The type of energy that is stored in a car battery

• thermal energy

• stored potential energy

• stored chemical energy

• stored nuclear energy

On a roller coaster, where is the maximum (or the most) stored potential energy?

• At the bottom of the biggest hill

• At the top of the biggest hill

• When going upside down

A glow stick contains special chemicals. They produce light when the glow stick is bent and cracked. What is the energy transfer that allows the glow stick to work?

• Nuclear energy ⟶ light energy

• Stored chemical energy ⟶ light energy

• Stored potential energy ⟶ light energy

What type of energy is in a bow Just before an arrow is released?

• Kinetic energy

• Stored potential energy

• Stored chemical energy

• Sound energy

A plant or tree converts ___________ energy from the sun to __________ energy to allow it to grow.

• Thermal energy → electrical energy

• Stored potential energy → thermal energy

• Stored chemical energy → kinetic energy

• Light energy → stored chemical energy

• Heat energy ⟶ stored chemical energy

Devices that convert electrical energy to kinetic energy (as the main form of useful output energy).

Note: There are two correct answers.

• A blender

• A bulb

• A bicycle

• A driller