
AQA Chapter 7 Radioactivity
Quiz
•
Physics
•
9th Grade
•
Practice Problem
•
Hard
David Williams
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60 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is meant by background radiation?
Radiation produced only by radioactive isotopes in hospitals
Radiation from all around us, including natural and artificial sources
Radiation that cannot be detected by any device
Radiation without harmful effects
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of radiation is most strongly ionising?
Gamma
X-ray
Beta
Alpha
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When an object is irradiated by radioactive material, it:
Becomes radioactive itself
Is temporarily exposed to radiation, but does not become radioactive
Absorbs neutrons and emits protons
Can never be used again
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Radioactive contamination refers to:
Unwanted presence of radioactive material on other materials
Harmless background rays
Radiation absorbed only by living cells
All of the above
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The use of thick lead barriers when working with radioactive sources is to:
Keep out oxygen
Shield from gamma radiation
Prevent splashing of chemicals
Make the room darker
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which material best stops beta radiation?
Thin paper
Iron nail
Aluminium foil (about 5mm thick)
Glass window
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The range in air of gamma radiation is:
Few cm
A few metres
Infinite (but intensity reduces with distance)
1 metre only
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