Unit 2 Review - Energy

Which of the following is an example of the transformation of mechanical energy into sound energy?

• heat from a campfire

• battery in a flashlight

• a violin being played

• ice cream melting

What type of energy transformation occurs in a stove burner?

• thermal (heat) to chemical

• electric to thermal (heat)

• thermal (heat) to sound

• sound to electric/electricity

Which of the following is an example of kinetic energy?

• a swimmer standing on a diving board
• a plate on the edge of a counter
• firewood stacked in a fireplace
• a child jumping rope

What happens to to the energy when a light bulb uses electricity?

• It is used up and disappears
• It is changed into matter
• it is transformed from one form of energy to another form.

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

Which object shows an energy transformation from electrical to heat energy?

• 
• 
• 
• 

Which of these household items correctly displays energy transformation of electrical energy into mechanical energy?

• Candle

• Clothing Iron

• Television

• Kitchen Mixer

Energy transformations occur when...

• energy is created through conduction
• energy changes from one form to another
• two forces slide together that are touching
• a chemical reaction takes place

Which energy transformation occurs when you rubs your hands together rapidly?

• Electrical energy to thermal energy

• Electrical energy to chemical energy

• Thermal energy to kinetic energy

• Kinetic energy to heat energy

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light
• Electrical to chemical
• Electrical to light
• Chemical to electrical