Grade 4 Science Quiz: Chapter 5 - Energy

What are the different forms of energy?

• Solid, liquid, gas, plasma

• Speed, distance, time, force

• Kinetic, potential, thermal, chemical, electrical, and nuclear

• Sun, moon, stars, planets

Give an example of potential energy and kinetic energy.

• A light bulb turned off (potential energy) and a running faucet (kinetic energy)

• A stationary rock (potential energy) and a sleeping cat (kinetic energy)

• A book on a shelf (potential energy) and a person standing still (kinetic energy)

• A roller coaster at the top of a hill (potential energy) and a moving car (kinetic energy)

Explain the concept of energy conservation.

• Energy conservation means using up all the energy available without any concern for the future.

• Energy conservation is the principle that energy cannot be created or destroyed, but can only be transformed from one form to another.

• Energy conservation is the idea that energy can only be used once and then it disappears.

• Energy conservation is the process of creating new energy from nothing.

How can we conserve energy in our daily lives?

• By keeping electronics plugged in even when not in use

• By using energy-inefficient light bulbs

• By turning off lights and appliances when not in use, using energy-efficient light bulbs, unplugging electronics when not in use, and using public transportation or carpooling.

• By leaving all lights and appliances on all the time

What is energy transfer?

• The movement of energy from one place to another or from one form to another.

• The process of converting matter into energy

• The creation of energy from nothing

• The movement of energy from one form to another

Provide an example of energy transfer in a simple machine.

• Seesaw

• Teeter-totter

• Swing set

• Bicycle

What is energy transformation?

• The process of creating energy out of nothing

• The process of changing energy into matter

• The process of changing matter into energy

• The process of changing one form of energy into another form

Describe how energy is transformed in a light bulb.

• Electricity is transformed into light and heat

• Electricity is transformed into sound and motion

• Heat is transformed into electricity and light

• Light is transformed into electricity and heat

Explain the process of energy transformation in a wind turbine.

• Kinetic energy of the wind is converted into potential energy and then into electrical energy

• Kinetic energy of the wind is converted into light energy and then into electrical energy

• Kinetic energy of the wind is converted into sound energy and then into electrical energy

• Kinetic energy of the wind is converted into mechanical energy and then into electrical energy

Give an example of energy transformation in a car engine.

• Potential energy to kinetic energy

• Electrical energy to mechanical energy

• Chemical energy to light energy

• Heat energy to mechanical energy