Energy

According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 

• destroyed, destroyed
• created, saved
• created, destroyed
• lost, found

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

What is energy?

• The ability to do work
• Heat and Electricity
• A force that causes motion
• None of these

A lamp that plugs into a wall socket draws energy, which flows through a thin wire in the bulb, causing it to heat up until it glows. What energy transformations are taking place?

• Chemical → light → electrical

• Mechanical → sound → light

• Thermal → solar → electrical

• Electrical → thermal → light

Which energy transformation occurs in a toaster?

• electrical → thermal

• chemical → thermal

• nuclear → electrical

• thermal → electrical

When you pull a door open, what type of energy is being used?

• light energy
• sound energy
• mechanical energy
• heat energy

If the radio is on in the car, what form of energy allows you to hear the music?

• light energy
• sound energy
• mechanical energy
• heat energy

A reading lamp can provide a room with _________ energy.

• light
• sound
• mechanical
• heat

Watching the Simpsons on TV at night before dinner is an example of an energy transformation. It is as follows:

• Light -> Sound -> Heat

• Electrical -> Light -> Sound

• Electrical -> Light -> Sound -> Heat

• Electrical -> Electrical

A candle burning is a type of energy transformation. It is chemical energy transformed into _________ and __________ energy.

• Light, kinetic

• Heat, light

• Heat, chemical

• Kinetic, solar