Forms of Energy

Energy is...

• the temperature outside.

• when something moves.

• the ability to do work

• does not exist in our daily lives.

Which is an example of radiant or light energy?

• A book on a desk

• Someone eating a meal

• A dog

• The Sun

How does energy transform when strumming a guitar?

• electrical energy to light energy

• chemical energy to light energy

• chemical energy to sound energy

• mechanical energy to sound energy

Which of the following shows that electrical energy is changed to light energy?

• hot iron

• lighted fluorescent bulb

• switching on the radio

• a boy running after drinking water

Which form of energy does a moving object possess?

• light energy

• sound energy

• mechanical energy

• chemical energy

• light and thermal energy

• Electrical energy is transformed into light and thermal energy.

• Light energy is being created

• Electric energy is being destroyed

What energy takes place when you use a fan?

• Electical to Mechanical, Sound, and Thermal

• Mechanical to Electrical, Sound, and Thermal

• Electrical to Sound and Radiant

• Radiant to Sound and Electrical

Micheal was at the gym and he was trying to lift the weights, but he could not lift it. Finally Micheal decided to go home. The next day he complained to the trainer that he did all that hard work for nothing! The trainer asked the other trainers "did he really do any work?"

Michelle: "Yes, because Micheal was tired"

Jose: "No, because Micheal transformed his energy into nothing."

Emily: No, Because Micheal pulled and pushed but the weight did not move."

Who was right?

• Michelle

• Jose

• Emily

Answer explanation

Work is force moving an object. Since the object did not move then there was no work done.

What form of energy caused the bread to bake?

• Electrical

• Light

• Sound

• Thermal

Answer explanation

Thermal energy (Heat) caused the bread to bake.

Energy is the ability to do ______ and cause _________.

• Work and cause Change

• Change and cause Work