Energy And Equations

Question 1

Equation for GPE (Short)

Answer 1

E=mgh

Question 2

Equation for GPE (long)

Answer 2

Gravitational potential energy = mass x gravitational field strength x height

Question 3

What is Earth’s gravitational field strength?

Answer 3

9.8 N/kg

Question 4

Equation for kinetic energy (short)

Answer 4

E=0.5mv ²

Question 5

Equation for kinetic energy (long)

Answer 5

Kinetic Energy = 0.5 x mass x velocity ²

Question 6

Work done is…

Answer 6

Energy transferred

Question 7

Units of work done?

Answer 7

Joules

Question 8

Work done =

Answer 8

Force x distance moved in direction of force

Question 9

Units of power?

Answer 9

Watts

Question 10

Power =

Answer 10

Work done/time

Question 11

Specific heat capacity is…

Answer 11

The amount of energy required to increase the temperature of 1kg of a material by 1 degree

Question 12

Thermal Energy =

Answer 12

Mass x specific heat capacity x temperature change

Question 13

Specific heat capacity =

Answer 13

Energy divided by (mass x temperature change)

Question 14

Thermal energy

Answer 14

Internal energy, heat

Question 15

Kinetic energy

Answer 15

Movement

Question 16

Nuclear energy

Answer 16

The energy stored in the nucleus of an atom

Question 17

Magnetic energy

Answer 17

Stored energy from attracting or repelling poles

Question 18

Chemical energy

Answer 18

The energy stored in bonds between molecules

Question 19

GPE (Gravitational potential energy)

Answer 19

Energy of object with height

Question 20

Elastic energy

Answer 20

Stored energy of a stretched or squished object

Question 21

Types of energy

Answer 21

Kinetic, Nuclear, Magnetic, Chemical, GPE, Thermal, Elastic, Sound, Light