Energy Transformation & Conduction, Convection, Radiation

What happens to an ice cube when it absorbs heat energy from your hand?

• It turns into gas

• It remains unchanged

• It becomes colder

• It turns into liquid

What does a thermometer measure?

• Weight of an object

• Volume of an object

• Heat energy of an object

• Density of an object

Why do metal objects feel colder than wooden objects at the same temperature?

• Metals are colder

• Metals absorb more light

• Metals are better conductors of heat

• Wooden objects generate heat

What is the purpose of adding rock salt to ice in the ice cream making process?

• To increase the freezing point of water

• To lower the freezing point of water

• To add flavor to the ice cream

• To make the ice colder

What causes a brain freeze?

• Drinking cold water too fast

• Ice cream touching the brain

• Nerve endings in the mouth losing heat energy

• Eating too much ice cream

When gasoline is burned in a car engine, ______ energy is converted into ______ energy.

• heat, chemical

• chemical, potential

• mechanical, chemical

• chemical, mechanical

On Halloween, you take a glow stick, crack the capsule inside and shake it until it glows. This is an example of light energy being created from ______ energy.

• chemical

• mechanical

• solution

• thermal

Within the alarm clock seen here, energy is transformed. It is time to get up! The alarm clock goes off. What are the energy transformations taking place in your alarm clock?

• electrical to magnetic to sound

• electrical to mechanical to sound

• electrical to mechanical to light

• chemical to electrical to mechanical

A student needs help completing an energy transfer diagram for a ceiling fan. Which BEST fills in the blanks labeled M and N to describe the transfer of energy?

• N: Electrical and M: Potential energy

• N: Light energy and M: Electrical energy

• N: Electrical energy and M: Kinetic energy

• N: Mechanical energy and M: Electrical energy

Which statement is TRUE?

• Energy can be created or destroyed.

• Stored chemical energy in a battery makes new energy called electrical energy.