P4 Radiation for Life

HideShow resource information
Why can you get an electric shock from closing a car door?
You become charged up by the friction of the rubber tyres on the road; when you touch the metal body it discharges.
1 of 36
A defibrillator delivers an electric shock through the chest wall to the heart. What does the electric shock do to the heart?
The shock restores a regular heart rhythm.
2 of 36
Sound is a longitudinal wave.Explain how sound travels through the air to reach your ear?
A series of compressions/high pressure areas; refraction/low pressure areas in the air.
3 of 36
Why are fuses always connected to the live wire?
The live wire is the one at high voltage; so the fuse is placed in the live wire to break the circuit as close to this as possible.
4 of 36
What is 'ultrasound'?
Sound above 20000 Hz
5 of 36
Light is an example of a transverse wave. What is the difference between a longitudinal and a transverse wave?
In a longitudinal wave the vibrations of the particles are parallel to the direction of the wave; in a transverse wave the vibrations of the particles are at right angles to the direction of the wave.
6 of 36
High-powered ultrasound is used to treat a patient with kidney stones. How does ultrasound do this?
Ultrasound vibrations pass into the body to the stones and the vibrations break up the stones.
7 of 36
Why must high powered ultrasound be used to break up kidney stones?
High powered ultrasound carries more energy and the stones need more energy to break them up.
8 of 36
What type of nuclear radiation does not change the composition of the nucleus?
Gamma.
9 of 36
What type of nuclear radiation travels at about one-tenth the speed of light?
Beta.
10 of 36
What are two natural sources of background radiation?
Rocks/soil and cosmic rays.
11 of 36
What are two sources of background radiation caused by human activity?
Radioactive waste from power stations and nuclear weapons.
12 of 36
Why are x-rays and gamma rays suitable to treat cancer patients?
They are both ionising radiations and they can kill cancer cells.
13 of 36
Why are alpha and beta particles not suitable to treat cancer patients?
They cannot penetrate into the body to the site of the cancer.
14 of 36
How are radioisotopes for medical use produced?
They are placed into a nuclear reactor and made to absorb neutrons.
15 of 36
What is a radioactive tracer?
A radioactive isotope which is introduced to the body and to diagnose a problem.
16 of 36
What sort of radiation should a tracer emit?
Gamma
17 of 36
What is meant by 'fission'?
It is the breaking down of a large nucleus into smaller one.
18 of 36
What is nuclear fusion?
The joining of two lighter nuclei to make one heavier one
19 of 36
What are boron control rods?
Rods are raised or lowered in a nuclear reactor to control the rate of fission.
20 of 36
An atom or molecule that has become charged is an ___.
Ion
21 of 36
When a polythene rod is rubbed with a duster, electrons are transferred from the duster to the polythene. What charge does the polythene rod have now?
Negative charge.
22 of 36
Why is ultrasound preferred to x-rays?
It doesn't damage living cells and it is able to produce images of soft tissue.
23 of 36
A smoke detector contains an isotope which emits ______ particles
Alpha
24 of 36
What radioactive substance of carbon is present in all living things?
Carbon-14
25 of 36
What rays are made by firing high-speed electrons at metal targets?
X-rays.
26 of 36
What is used to destroy a tumour in the body?
A radioisotope.
27 of 36
What uses are their for electrostatics?
Defibrillators, paint and crop sprayers, dust precipitators and photocopiers.
28 of 36
What can reduce the risk of getting an electric shock?
Correct earthing, standing on insulating mats, wearing shoes with insulating soles and bonding fuel tanker to aircraft.
29 of 36
What is an example of a longitudinal wave?
Sound or ultrasound waves.
30 of 36
What is an example of a transverse wave?
A light wave.
31 of 36
What is the wavelength?
It is the distance occupied by one complete wave
32 of 36
What is a frequency?
It is the number of complete waves in one second, measured in Hertz (Hz)
33 of 36
What are the properties of a beta particle?
It is negatively charged, has a very small mass, travels very fast and is an electron.
34 of 36
What is an radioisotope?
An isotope of an element that is radioactive.
35 of 36
What are the properties of an alpha particle?
It is positively charged, has a large mass, has an helium nucleus, has helium gas around it and consists of two protons and two neutrons.
36 of 36

Other cards in this set

Card 2

Front

A defibrillator delivers an electric shock through the chest wall to the heart. What does the electric shock do to the heart?

Back

The shock restores a regular heart rhythm.

Card 3

Front

Sound is a longitudinal wave.Explain how sound travels through the air to reach your ear?

Back

Preview of the front of card 3

Card 4

Front

Why are fuses always connected to the live wire?

Back

Preview of the front of card 4

Card 5

Front

What is 'ultrasound'?

Back

Preview of the front of card 5
View more cards

Comments

Miss KHP

Covers core topics, well done! Great interactive way of revising by getting kids to find the answers in a fun way! 

spookycats

Thanks for this! Really useful as I had no revision papers - life saver!

Similar Physics resources:

See all Physics resources »See all Electricity resources »