Unit 4 Energy and Circuits Pre-test

Which of the following is an example of chemical energy?

• A moving car

• A battery

• A light bulb

• A ringing bell

If bulb 1 burns out, what will occur?

• bulbs 2 and 3 will go out
• bulbs 2 and 3 receive more volts
• bulbs 2 and 3 will stay lit
• nothing will happen

What happens to the chemical energy in a circuit when a light bulb is turned on?

• It is destroyed

• It is transformed into light and heat

• It remains unchanged

• It is transformed into electrical then light and heat

Explain why a metal spoon feels warmer than a plastic spoon when both are placed in hot soup.

• Metal conducts heat better than plastic

• Metal absorbs more heat than plastic

• Metal reflects heat better than plastic

• Metal is denser than plastic

Describe how energy is transformed in a wind turbine.

• Mechanical to electrical

• Electrical to thermal

• Chemical to mechanical

• Light to chemical

How can you increase the brightness of a bulb in a simple circuit?

• Add more batteries

• Add more resistors

• Use a longer wire

• Use a smaller bulb

What form of energy allows you to see yourself in a mirror?​ (a)  

• light
• heat
• mechanical

Match the following

• Light

• Energy of heat

• Sound

• Energy you can hear

• Thermal

• Energy of moving electrons

• Electrical

• Energy of movement

• Mechanical

• Energy you can see

A CHANGE from one type of energy to another is called ​ (a)  

• energy transformation
• gravitational energy
• kinetic energy

Batteries have ​ (a)   energy that they change into ​ (b)   energy when plugged in

• chemical
• electrical
• kinetic
• sound
• light
• heat