2025 end of years (physics)

Question 1

What is the formula for Kinetic Energy (KE)?

Answer 1

KE = ½ × m × v²

Question 2

What is the formula for Gravitational Potential Energy (GPE)?

Answer 2

GPE = m × g × h

Question 3

How is Efficiency calculated?

Answer 3

Efficiency = useful energy out / total energy in

Question 4

What is the formula for Velocity (V)?

Answer 4

V = x / t

Question 5

What is the formula for Acceleration (a)?

Answer 5

a = (v - u) / t

Question 6

What do scalar quantities have?

Answer 6

Magnitude

Question 7

True or false: scalar quantities have direction and magnitude.

Answer 7

FALSE scalar quantities have magnitude only

Question 8

True or false: Vector quantities have both a magnitude and a direction.

Answer 8

TRUE

Question 9

What do vector quantities have?

Answer 9

Direction and magnitude

Question 10

How can vectors be represented on a graph?

Answer 10

Vectors can be represented by arrows! The bigger the arrow
the greater the magnitude. The arrows show the direction.

Question 12

What are resultant vectors?

Answer 12

A resultant vector shows the overall effect of MORE THAN ONE vector acting on an object.

Question 13

Fill in the gaps: a ___________ ________ shows the overall effect of ____ ______ _______ vector acting on an object.

Answer 13

A RESULTANT VECTOR shows the overall effect of MORE THAN ONE vector acting on an object.

Question 14

speed = __________ ÷ _______

Answer 14

speed = DISTANCE ÷ TIME

Question 15

Distance ÷ time = _________

Answer 15

distance ÷ time = SPEED

Question 16

velocity = ____________ ÷ ______

Answer 16

velocity = DISPLACEMENT ÷ TIME

Question 17

displacement ÷ time = ________

Answer 17

displacement ÷ time = VELOCITY

Question 18

acceleration = _______________ ÷__________

Answer 18

acceleration = CHANGE IN VELOCITY ÷ TIME TAKEN

Question 19

____________= change in velocity ÷ time taken

Answer 19

ACCELERATION = change in velocity ÷ time taken

Question 20

distance = __________ × _________

Answer 20

distance = SPEED × TIME

Question 21

What is efficiency?

Answer 21

Efficiency is the ratio of useful energy output to the total energy input

Question 23

Name the six energy stores

Answer 23

Kinetic energy
Nuclear energy
Chemical energy
Thermal energy
Elastic potential energy
Gravitational potential energy (GPE)

Question 24

Kinetic energy is a ________ ______.

Answer 24

Kinetic energy is a ENERGY STORE

Question 25

nuclear energy is a __________ _______.

Answer 25

Nuclear energy is a ENERGY STORE

Question 26

Chemical energy is a _______ ________.

Answer 26

Chemical energy is a ENERGY STORE

Question 27

Thermal energy is a _______ ______

Answer 27

Thermal energy is a ENERGY STORE

Question 28

Elastic potential energy is a __________ _______.

Answer 28

Elastic potential energy is a ENERGY STORE

Question 29

Gravitational potential energy is a ________ _______

Answer 29

Gravitational potential energy is a ENERGY STORE

Question 30

What is an energy store?

Answer 30

An energy store is energy that an object can have.

Question 31

What is an energy transfer

Answer 31

An energy transfer is energy that only exists when energy is being moved.

Question 32

What are the energy transfers BY RADIATION

Answer 32

Lights Sound Heating

Question 33

Heating, light and sound are ________ _________ by __________

Answer 33

Heating, light and sound are ENERGY TRANSFERS by RADIATION.

Question 34

What are the energy transfers by WORK DONE

Answer 34

against electrical resistance By forces

Question 35

‘Against electrical resistance’ and ‘by forces’ are _________ _________ by _______ ______

Answer 35

‘Against electrical resistance’ and ‘by forces’ are ENERGY TRANSFERS by WORK DONE.

Question 36

What’s the equation for efficiency?

Answer 36

EFFICIENCY = USEFUL ENERGY OUT ÷ TOTAL ENERGY IN

Question 37

How do you turn the EFFICIENCY EQUATION into a percentage?

Answer 37

Multiply it by 100

Question 38

What is earths gravitational field strength?

Answer 38

10 N/KG

Question 39

What does renewable mean? (For fuel)

Answer 39

Renewable means that the fuel won’t run out, or it doesn’t use fuel.

Question 40

What does non-renewable mean?

Answer 40

The fuel supply will run out one day

Question 41

Is fossil fuel renewable or non-renewable?

Answer 41

non-renewable because it will run out one day

Question 43

Is wave energy renewable or non-renewable?

Answer 43

Renewable because it won’t run out

Question 44

Is hydroelectric power renewable or non-renewable?

Answer 44

Renewable because it won’t run out

Question 45

Is wind a renewable energy?

Answer 45

Renewable because the fuel won’t run out

Question 46

Is solar energy renewable or non renewable?

Answer 46

Renewable because the fuel won’t run out.

Question 47

Is biomass a renewable or a non-renewable energy source?

Answer 47

non-renewable because the fuel supply will run out one day.