Physics

Question 1

Formula for speed = ?

Answer 1

Distance
_________
Time

Question 2

What is energy measured in?

Answer 2

Joules (J)

Question 3

Formula for work done = ?

Answer 3

Force x distance

Question 4

What are the eight types of energy stores?

Answer 4

Magnetic
Thermal
Chemical
Kinetic
Electrostatic
Elastic potential
Gravitational potential
Nuclear

Question 5

Formula for kinetic energy?

Answer 5

1/2 x mass x velocity^2

Question 6

Formula for elastic potential energy?

Answer 6

1/2 x elastic constant x extension^2

Question 7

Formula for gravitational potential energy?

Answer 7

Mass x gravity strength x vertical height

Question 8

Formula for thermal energy?

Answer 8

Mass x specific heat capacity x change in temperature

Question 9

Formula for power = ?

Answer 9

Energy
____________
Time taken

Question 10

What is power measured in?

Answer 10

Watts (W)
or
Joules per second (J/s)

Question 11

Formula for uncertainty = ?

Answer 11

Range of the set of data
_________________________
2

Question 12

Formula for efficiency = ?

Answer 12

(Useful energy output / total energy in) x100

Question 13

Formula for power efficiency = ?

Answer 13

(Useful power output / total power in) x100

Question 14

Formula for change in energy = ?

Answer 14

Mass x specific heat capacity x change in temperature

Question 15

What are the three ways heat can be transferred?

Answer 15

Conduction (solids)
Convection (liquids)
Radiation (air and vacuums)

Question 16

Higher temperature = ?

Answer 16

Higher kinetic energy

Question 17

What are the 6 most popular renewable energy sources?

Answer 17

Solar
Wind
Geothermal
Hydropower
Ocean waves
Biomass

Question 18

Name the 4 most popular non renewable energy sources

Answer 18

Oil
Natural gases
Coal
Nuclear energy

Question 19

Formula for density = ?

Answer 19

Mass
________
Volume

Question 20

Formula for pressure = ?

Answer 20

Force
______
Area

Question 21

How does a eureka can work?

Answer 21

The excess water that falls out after putting the object your measuring in the can would accurately show the volume of your object

Question 22

What is useful energy?

Answer 22

Energy that is transferred to where it is wanted in the form it is wanted

Question 23

What is wasted energy?

Answer 23

Energy which isn’t transferred usefully

Question 24

What is a thermal conductor?

Answer 24

A material which allows thermal energy to move through them easily

Question 25

What is a thermal insulator?

Answer 25

A material which does not allow thermal energy to move through them easily

Question 26

What is infrared radiation?

Answer 26

A part of the electromagnetic spectrum. Infrared is emitted, absorbed and reflected by all objects, some more than others

Question 27

Formula for specific heat capacity = ?

Answer 27

Change in thermal energy
________________________________
Mass x change in temperature

Question 28

What is a carbon-neutral energy source?

Answer 28

A source of energy that releases the same amount of carbon that it takes in

Question 29

What is specific latent heat?

Answer 29

The amount of energy required to change the state of 1kg of material without changing its temperature

Question 30

Formula for specific latent heat?

Answer 30

Energy released / absorbed
_____________________________
Mass

Question 31

What is internal energy?

Answer 31

The total amount of kinetic energy and chemical potential energy of all particles in the system

Question 32

What is pressure measured in?

Answer 32

Pascals (Pa)

Question 33

How can a house be insulated?

Answer 33

Thick walls
Loft insulation
Cavity walls
Double glazing