# GCSE Extension Physics Revision Paper 2

This is an Extension Physics Revision Paper for students studying Physics. It covers a selection of core, additional and extension physics topics.

Key stage:  KS 4

Curriculum topic:  GCSE Revision Papers

Curriculum subtopic:  Physics

Difficulty level:

### QUESTION 1 of 10

This is an Extension Physics Revision Paper for students doing Extension (triple) Science. It covers a selection of core, additional and extension physics topics.

Calculate the efficiency of an appliance if the useful energy transferred is 80J and the total energy supplied 200J.

50%

70%

40%

Tick the colour that best absorbs thermal energy.

black

white

yellow

The Earth is getting warmer because of an increased concentration of _____________ gases in the atmosphere.

What is half-life?

It is the time taken for half the unstable nuclei in a sample of a radioactive isotope to decay.

It is the time taken for two unstable nuclei to fuse into one.

Radioactive decay is a _______ process.

planned

random

fast

What is the biggest source of background radiation in the UK?

food and drink

cosmic rays

Plastic syringes cannot be sterilised using heat ; instead they are _________ with gamma rays.

Beta particle detectors are used to control the ___________ of paper when it is being manufactured.

When a ball is dropped onto the ground it undergoes an ___________ collision.

elastic

elastic potential

inelastic

In an elastic collision kinetic energy is _______________.

conserved

not conserved

A positron is the anti-matter of _____________.

an electron

a proton

a neutron

What is the unit of measurement for pressure?

Watt (W)

Joule (J)

Pascal (Pa)

The temperature of a gas can be changed by changing its _________.

These two factors affect the volume of gas inside a hot air balloon.

temperature of outside air

concentration of outside air

volume of outside air

pressure of outside air

If a volume of a gas increases at a constant temperature, the pressure __________.

decreases

increases

stays the same

Even particles like protons are made of smaller ____________ particles.

Gamma rays are very penetrating but not as _____________ as alpha and beta radiation.

ionising

oxidising

permeable

Pulse oximeters consist of two LEDs and a _______________.

thermometer

detector

pacemaker

For waves passing from one medium to another, Snell's law links the angle of incidence and the angle of _____________.

refraction

reflection

As radiation travels outwards, its intensity _________.

decreases

increases

• Question 1

Calculate the efficiency of an appliance if the useful energy transferred is 80J and the total energy supplied 200J.

40%
EDDIE SAYS
useful energy 80 efficiency=-------------- x 100% = ----- x 100% = 40% total energy 200
• Question 2

Tick the colour that best absorbs thermal energy.

black
EDDIE SAYS
Black absorbs thermal energy better than other colours.
• Question 3

The Earth is getting warmer because of an increased concentration of _____________ gases in the atmosphere.

greenhouse
EDDIE SAYS
The Earth is getting warmer because of an increased concentration of greenhouse gases in the atmosphere.
• Question 4

What is half-life?

It is the time taken for half the unstable nuclei in a sample of a radioactive isotope to decay.
EDDIE SAYS
Half-life is the time taken for half the unstable nuclei in a sample of a radioactive isotope to decay.
• Question 5

Radioactive decay is a _______ process.

random
EDDIE SAYS
Radioactive decay is a random process.
• Question 6

What is the biggest source of background radiation in the UK?

EDDIE SAYS
The biggest source of background radiation in the UK is radon gas.
• Question 7

Plastic syringes cannot be sterilised using heat ; instead they are _________ with gamma rays.

EDDIE SAYS
Plastic syringes cannot be sterilised using heat; instead they are irradiated with gamma rays.
• Question 8

Beta particle detectors are used to control the ___________ of paper when it is being manufactured.

thickness
EDDIE SAYS
Beta particle detectors are used to control the thickness of paper when it is being manufactured.
• Question 9

When a ball is dropped onto the ground it undergoes an ___________ collision.

inelastic
EDDIE SAYS
When a ball is dropped onto the ground it undergoes an inelastic collision.
• Question 10

In an elastic collision kinetic energy is _______________.

conserved
EDDIE SAYS
In an elastic collision kinetic energy is conserved.
• Question 11

A positron is the anti-matter of _____________.

an electron
EDDIE SAYS
A positron is the anti-matter of an electron.
• Question 12

What is the unit of measurement for pressure?

Pascal (Pa)
EDDIE SAYS
Pascal (Pa) is the unit of measurement for pressure.
• Question 13

The temperature of a gas can be changed by changing its _________.

volume
EDDIE SAYS
The temperature of a gas can be changed by changing its volume.
• Question 14

These two factors affect the volume of gas inside a hot air balloon.

temperature of outside air
pressure of outside air
EDDIE SAYS
The temperature and pressure of outside air affect the volume of gas inside a hot air balloon.
• Question 15

If a volume of a gas increases at a constant temperature, the pressure __________.

decreases
EDDIE SAYS
If a volume of a gas increases at a constant temperature, the pressure decreases.
• Question 16

Even particles like protons are made of smaller ____________ particles.

fundamental
EDDIE SAYS
Even particles like protons are made of smaller fundamental particles.
• Question 17

Gamma rays are very penetrating but not as _____________ as alpha and beta radiation.

ionising
EDDIE SAYS
Gamma rays are very penetrating but not as ionising as alpha and beta radiation.
• Question 18

Pulse oximeters consist of two LEDs and a _______________.

detector
EDDIE SAYS
Pulse oximeters consist of two LEDs and a detector.
• Question 19

For waves passing from one medium to another, Snell's law links the angle of incidence and the angle of _____________.

refraction
EDDIE SAYS
For waves passing from one medium to another, Snell's law links the angle of incidence and the angle of refraction.
• Question 20

As radiation travels outwards, its intensity _________.

decreases
EDDIE SAYS
As radiation travels outwards, its intensity decreases.
---- OR ----

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