Question 1

Which of these is NOT one of the eight energy stores?

Accepted Answer

radiation

Answer

elastic potential

Answer

kinetic

Answer

gravitational potential

Question 2

Which of these is NOT one of the eight energy stores?

Accepted Answer

gravity

Answer

magnetic

Answer

electrostatic

Answer

thermal

Question 3

Heating is one way energy can be transferred. Which of these is NOT one of the other three ways?

Accepted Answer

chemical reactions

Answer

electric current

Answer

mechanically (by forces)

Answer

waves (radiation)

Question 4

What is a system?

Accepted Answer

an object or group of objects

Answer

a machine

Answer

a collection of organs

Answer

a force

Question 5

What term is used to describe a system where no energy can be transferred to or from the surroundings?

Accepted Answer

closed system

Answer

immersion heating system

Answer

heating system

Answer

energy efficient system

Question 6

What is work done?

Accepted Answer

energy transferred when a force moves an object

Answer

the internal energy of an object

Answer

amount of power needed to move an object by forces

Answer

moving an object using a force

Question 7

What is the unit for energy?

Accepted Answer

joules ($	ext{J}$)

Answer

charge ($	ext{C}$)

Answer

watt ($	ext{W}$)

Answer

amp ($	ext{A}$)

Question 8

What is one joule of work?

Accepted Answer

the work done when a force of $	ext{1 N}$ causes an object to move $	ext{1 m}$ in the direction of the force

Answer

the work done when a force of $	ext{10 N}$ causes an object to move 1m in the direction of the force

Answer

the work done when a force of $	ext{1 N}$ causes an object to move $	ext{10 m}$ in the direction of the force

Answer

the work done when a force of $	ext{10 N}$ causes an object to move $	ext{10 m}$ in the direction of the force

Question 9

How is energy from the wheels of a moving car transferred to the brakes as it slows down?

Accepted Answer

mechanically

Answer

thermal store of the surroundings

Answer

heating

Answer

kinetically

Question 10

What is the final energy store for heating water in an electric kettle?

Accepted Answer

thermal energy store of the water

Answer

heating transfer to the water

Answer

electric current in a kettle

Answer

thermal energy store of the kettle's heating element

Question 11

What is the energy store in the elastic when a ball is fired using a catapult?

Accepted Answer

elastic potential

Answer

kinetic store

Answer

thermal store

Answer

mechanical transfer

Question 12

What is the initial energy store in battery powered toy car moving across the floor?

Accepted Answer

chemical store of the battery

Answer

electrical store of the battery

Answer

thermal store of the surroundings

Answer

kinetic store of the toy car

Question 13

Which is the correct energy transfer when a falling apple hits the ground?

Accepted Answer

kinetic store of the apple transfers energy by sound waves to the thermal store of the surroundings

Answer

gravitational potential energy transfers mechanically to the kinetic store of the apple

Answer

energy transfers from the kinetic energy store of the apple and dissipates to the surroundings by electric current

Answer

gravitational potential energy of the apple dissipates to the thermal store of the surroundings

Question 14

Name the unit that represents one joule transferred per second.

Accepted Answer

watt ($	ext{W}$)

Answer

amps ($	ext{A}$)

Answer

coulomb ($	ext{C}$)

Answer

joules per second ($	ext{J/s}$)

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