Unit 2: Energy Review (Part 2)

Sound energy is the result when a force, either sound or pressure, makes an object or substance vibrate.

• False
• True

What type of energy is pictured?

• Mechanical Energy
• Electrical Energy
• Sound Energy
• Light Energy

What is the energy transformation that occurs in an electric pencil sharpener?

• mechanical energy to electrical energy
• chemical energy to mechanical energy
• radiant energy to sound energy
• electrical energy to mechanical energy

What type of energy transformation occurs in an electric fan?

• electrical energy to nuclear energy
• electrical energy to mechanical energy
• chemical energy to radiant energy
• radiant energy to mechanical energy

Which of the following statements is correct?

• The car has less kinetic energy because it has more mass than the girl.
• The car has the most kinetic energy because it has more mass than the girl.
• The car and the girl have the same amount of kinetic energy because they are moving at the same speed.
• The girl has the most kinetic energy because she has less mass than the car.

What kind of heat transfer happens when the sun is heating your body?

• Conduction
• Radiation
• Convection
• Density

Heat flow occurs between two objects when they have different......

• Energy
• Specific Heat
• Temperature
• Density

Which describes what can happen as a result of radiation?

• A piece of wood burns in a fire.
• A shirt is hot after having been ironed.
• A can of soup is heated in a pot on a stove.
• A car’s inside temperature rises to over 100 degrees on a sunny day.

Select 4 answers. Which of the following is an example of Convection?

• Convection currents
• The energy driving the water cycle
• lava lamp
• water boiling
• hitting hot metal

Heat is when thermal energy from a warmer object transfers to a cooler object.

• True
• False