Physics mock revision Exam
questions accurately defined latest
update
What are the two conditions for total internal reflection? - n
Ans✔
The angle of incidence must be greater than the critical angle and the light must be
inside a more dense material. Total internal reflection
Qs
What effect do optical fibres use to transmit light around corners? - n
Ans✔
Total internal reflection Total internal reflection
Qs
How many satellites are needed to transmit a signal around the Earth? - n
Ans✔
At least 3 Total internal reflection
Qs
What type of electromagnetic wave is used for satellite communication? - n
Ans✔
Microwaves Total internal reflection
Qs
Why do satellites not use visible light for communication? - n
Ans✔
Visible light is blocked by clouds Total internal reflection
,Qs
What type of electromagnetic wave is used for communication using optical fibres?
-n
Ans✔
Visible light (sometimes infrared) Total internal reflection
Qs
What is an endoscope? - n
Ans✔
A flexible optical fibre used to look inside the human body. Total internal reflection
Qs
What type of electromagnetic wave does a CT scan use? - n
Ans✔
X-ray Total internal reflection
Qs
What does a CT scan do? - n
Ans✔
Create a 3D picture of a large area of the body. Total internal reflection
Qs
What risks are associated with CT scans? - n
Ans✔
Ionising radiation from the X-rays can damage cells and increase risk of cancer.
Total internal reflection
Qs
List the six main energy stores. - n
Ans✔
,Chemical, kinetic, gravitational potential, elastic potential, thermal, nuclear.
Qs
Describe what a chemical energy store is. - n
Ans✔
Fuels, foods or chemicals found in batteries. Energy is transferred during chemical
reactions.
Qs
Describe what a kinetic energy store is. - n
Ans✔
Energy an object has because it is moving.
Qs
Describe what a gravitational potential energy store is. - n
Ans✔
Energy stored because of an object's position (e.g. above the ground)
Qs
Describe what an elastic potential energy store is. - n
Ans✔
Energy stored in a springy object when you stretch or squash it.
Qs
Describe what a thermal energy store is. - n
Ans✔
Energy a substance has because of its temperature
Qs
Draw an energy transfer diagram for a batter-powered torch. - n
, Ans✔
(Teacher to draw)
Qs
Draw an energy transfer diagram for a ball dropped from a height. - n
Ans✔
(Teacher to draw)
Qs
A rollercoaster climbs a slope and then descends the other side. What stores is the
energy transferred between? - n
Ans✔
Gravitational potential energy --> Kinetic energy
Qs
State the principle of conservation of energy. - n
Ans✔
Energy cannot be created or destroyed, only transferred between stores.
Qs
What, in terms of energy, is a closed system? - n
Ans✔
A system where there is no net (overall) change to the amount of energy stored in
it.
Qs
Why does a pendulum eventually stop swinging? - n
Ans✔
Some of its gravitational potential energy is transferred to thermal energy due to air
resistance.
questions accurately defined latest
update
What are the two conditions for total internal reflection? - n
Ans✔
The angle of incidence must be greater than the critical angle and the light must be
inside a more dense material. Total internal reflection
Qs
What effect do optical fibres use to transmit light around corners? - n
Ans✔
Total internal reflection Total internal reflection
Qs
How many satellites are needed to transmit a signal around the Earth? - n
Ans✔
At least 3 Total internal reflection
Qs
What type of electromagnetic wave is used for satellite communication? - n
Ans✔
Microwaves Total internal reflection
Qs
Why do satellites not use visible light for communication? - n
Ans✔
Visible light is blocked by clouds Total internal reflection
,Qs
What type of electromagnetic wave is used for communication using optical fibres?
-n
Ans✔
Visible light (sometimes infrared) Total internal reflection
Qs
What is an endoscope? - n
Ans✔
A flexible optical fibre used to look inside the human body. Total internal reflection
Qs
What type of electromagnetic wave does a CT scan use? - n
Ans✔
X-ray Total internal reflection
Qs
What does a CT scan do? - n
Ans✔
Create a 3D picture of a large area of the body. Total internal reflection
Qs
What risks are associated with CT scans? - n
Ans✔
Ionising radiation from the X-rays can damage cells and increase risk of cancer.
Total internal reflection
Qs
List the six main energy stores. - n
Ans✔
,Chemical, kinetic, gravitational potential, elastic potential, thermal, nuclear.
Qs
Describe what a chemical energy store is. - n
Ans✔
Fuels, foods or chemicals found in batteries. Energy is transferred during chemical
reactions.
Qs
Describe what a kinetic energy store is. - n
Ans✔
Energy an object has because it is moving.
Qs
Describe what a gravitational potential energy store is. - n
Ans✔
Energy stored because of an object's position (e.g. above the ground)
Qs
Describe what an elastic potential energy store is. - n
Ans✔
Energy stored in a springy object when you stretch or squash it.
Qs
Describe what a thermal energy store is. - n
Ans✔
Energy a substance has because of its temperature
Qs
Draw an energy transfer diagram for a batter-powered torch. - n
, Ans✔
(Teacher to draw)
Qs
Draw an energy transfer diagram for a ball dropped from a height. - n
Ans✔
(Teacher to draw)
Qs
A rollercoaster climbs a slope and then descends the other side. What stores is the
energy transferred between? - n
Ans✔
Gravitational potential energy --> Kinetic energy
Qs
State the principle of conservation of energy. - n
Ans✔
Energy cannot be created or destroyed, only transferred between stores.
Qs
What, in terms of energy, is a closed system? - n
Ans✔
A system where there is no net (overall) change to the amount of energy stored in
it.
Qs
Why does a pendulum eventually stop swinging? - n
Ans✔
Some of its gravitational potential energy is transferred to thermal energy due to air
resistance.
