Energy and efficiency

Question 1

What are the 10 types of energy?

Answer 1

Magnetic
Kinetic (movement energy)
Heat (thermal energy)
Light
Gravitational potential
Chemical
Sound
Electrical
Elastic potential
Nuclear

Question 2

How can you remember the 10 types of energy?

Answer 2

Most Kids Hate Learning GCSE Energy Names

Question 3

What is magnetic energy?

Answer 3

Energy in magnets and electromagnets

Question 4

What is kinetic energy?

Answer 4

The energy in moving objects – also called movement energy

Question 5

What is heat also known as?

Answer 5

Thermal energy

Question 6

What is light also known as?

Answer 6

Radiant energy

Question 7

What is gravitational potential energy?

Answer 7

Stored energy in raised objects

Question 8

What is chemical energy?

Answer 8

Stored energy in fuel, foods and batteries

Question 9

What is sound energy?

Answer 9

Energy released by vibrating objects

Question 10

What is electrical energy?

Answer 10

Energy in moving charges or static electric charges

Question 11

What is elastic potential energy?

Answer 11

Stored energy in stretched or squashed objects

Question 12

Where is nuclear energy stored?

Answer 12

The nuclei of atoms

Question 13

What does an energy transfer diagram show?

Answer 13

Each type of energy, whether it is stored or not, and the processes taking place as energy is transferred.

Question 14

What does a Sankey diagram show?

Answer 14

A Sankey diagram summarises all the energy transfers taking place in a process. The thicker the line or arrow, the greater the amount of energy involved.

Question 15

What is the formula for the efficiency of an object?

Answer 15

Efficiency = Useful energy out ÷ Total energy in (X100 for a percentage)