Unit 3 PLTW

The ability to do work is

• power
• energy
• thermal
• kinetic

Heat energy is also called

• electrical energy
• chemical energy
• light energy
• thermal energy

Electrical Energy is:

• energy caused by the vibrations of an object
• energy caused by changes in the nucleus of an atom
• energy of moving electrons
• energy caused by heat

What machine changes electrical energy into light and sound energy

• battery
• lightbulb
• alarm clock
• apple

What machine changes chemical energy into heat, light and sound energy

• blender
• firecracker
• lightbulb
• apple

A student connected some wire to a battery and a small bulb to make a simple circuit. Energy from the battery is changed into electricity. What type of energy is stored in the battery?

• chemical
• nuclear
• heat
• light

Which type of energy is being produced?

• light
• nuclear
• chemical
• mechanical

The purpose of the panels is to change solar energy into ____________.

• light energy
• electrical energy
• chemical energy
• mechanical energy

The Sun provides Earth with _________________.

• chemical energy
• radiant energy
• electrical energy
• magnetic energy

Can energy be created or destroyed?

• Yes, it can be created.
• Yes, it can be destroyed.
• No, energy is always conserved
• None of these