P1 Energy

Question 1

Kinetic Energy

Answer 1

All moving things store kinetic energy

Question 2

Thermal energy

Answer 2

The energy a substance or an object stores because of its tempature e.g fire

Question 3

Elastic potential energy

Answer 3

The energy stored in a springy object when u stretch are squash it e.g a spring

Question 4

Gravitational potential energy

Answer 4

The energy stored in a object because of its position above the ground

Question 5

Chemical energy

Answer 5

Energy stored in a fuel e.g food or a battery

Question 6

Mechanical working

Answer 6

Anything that involves a force like surfaces being in contact or throwing a ball

Question 7

Electrical working

Answer 7

Any type of transfer through currents or wires

Question 8

Heating by particles

Answer 8

Heat moving from 1 place to another through conduction and convection. Not kinetic energy e.g rubbing hands together is mechanical working

Question 9

Heating by radiation

Answer 9

Heat radiation and any electro magnetic waves (light waves)

Question 10

The principal conservation of energy

Answer 10

Energy cannot be created or destroyed

Question 11

Work done equation

Answer 11

Work done = Force X Distance
W=F X S

Question 12

Weight equation

Answer 12

Weight= mass X gravity
W=M X G

Question 13

Gravity on earth

Answer 13

9.8 N/kg

Question 14

Measurement of mass

Answer 14

Kg

Question 15

Measurement of Weight

Answer 15

Newtons (N)

Question 16

Measurement of Gravity

Answer 16

Newtons per Kg n/kg

Question 17

Mass equation

Answer 17

Mass=Weight(N) divided by Gravity(n/kg)

Question 18

Gravity equation

Answer 18

Gravity=Weight(N) divided by mass (kg)

Question 19

Measurement of work done

Answer 19

Joules (J)

Question 20

Measurement of force

Answer 20

Newtons (N)

Question 21

Measurement of distance

Answer 21

metres (M)

Question 22

Force equation

Answer 22

Force=Work done (J)divided by distance (M)

Question 23

Distance equation

Answer 23

Distance=Work done(J) divided by Force(N)

Question 24

Gravitational Potential energy equation

Answer 24

GPE(J) =Mass(Kg) X Gravitational field strength(n/kg) X Height(M)
GPE=m X g X h

Question 25

A higher apple will be storing more or less GPE

Answer 25

More

Question 26

A apple with more mass will be storing more or less GPE

Answer 26

More

Question 27

Kinetic energy Equation

Answer 27

Kinetic energy= 0.5 X Mass(Kg) X Velocity squared (m/s)
Ek=0.5 X M X v2

Question 28

Velocity

Answer 28

Velocity= Distance(M) divided by Time(s)

Question 29

Velocity Squared

Answer 29

V2= Kinetic energy divided by 0.5 X Mass (use fraction button on calculator)
V2=Ek over 0.5 X M

Question 30

Elastic potential energy equation

Answer 30

Elastic potential energy(J)=0.5 X spring constant(n/m) X Extension squared (M)
Ee= 0.5 X K X E squared

Question 31

Force for Elastic potential energy

Answer 31

Force=spring constant(n/m) X extension(M)
F=k X e

Question 32

Wasted energy is ….

Answer 32

Disapated

Question 33

Friction always causes energy to be transferred to a ….

Answer 33

Thermal Energy store

Question 34

Input energy

Answer 34

Input energy= useful output + wasted output energy

Question 35

Efficiency equation

Answer 35

Efficiency = Useful output divided by total input (X100 for a percentage)

Question 36

Total input energy

Answer 36

Total input energy= Useful output energy divided by efficiency

Question 37

Useful output energy

Answer 37

Useful output energy = Efficiency X Total Input energy

Question 38

Power is a measure of ….

Answer 38

How quickly energy is transferred

Question 39

Power equation

Answer 39

Power=energy divided by time

Question 40

Energy equation

Answer 40

Energy=Power X time

Question 41

Time equation

Answer 41

Time= Energy divided by power