AQA GCSE Physics Unit 2.6

Matthew T
Quiz by , created over 5 years ago

Twenty questions on the sixth section of Unit 2 in AQA GCSE Physics: Radioactivity.

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Matthew T
Created by Matthew T over 5 years ago
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Question 1

Question
Which of these scientists were credited with discovering radioactivity?
Answer
  • Becquerel
  • Sievert
  • Gray
  • Curie

Question 2

Question
True or false? All nuclei, both stable and unstable, undergo radioactive decay.
Answer
  • True
  • False

Question 3

Question
True or false? Radioactive decay is a random process roughly following a Poisson distribution.
Answer
  • True
  • False

Question 4

Question
Which five of these are major (contribute to 10% or more) causes of background radiation?
Answer
  • Medical uses (e.g. X-rays)
  • Nuclear power stations
  • Radon gas in the air
  • Radioactivity in the ground
  • Nuclear weapons testing
  • Cosmic radiation
  • Food and drink
  • Air travel

Question 5

Question
Which of these scientists helped to discover the nucleus?
Answer
  • Rutherford
  • Geiger
  • Marsden
  • Einstein
  • Lavoisier
  • Mendeleev

Question 6

Question
Which of these conclusions were made about the structure of the atom were made following Geiger and Marsden's alpha particle scattering experiment?
Answer
  • The atom is mostly made of matter
  • The atom is mostly made of empty space
  • Most of the mass is concentrated in the nucleus
  • The mass is evenly distributed throughout the atom
  • The nucleus has a large positive charge
  • The nucleus has a large negative charge

Question 7

Question
True or false? The previous model for the structure of the atom was known as the "pease pottage" model.
Answer
  • True
  • False

Question 8

Question
How many neutrons can be found in the isotope polonium-210? (Z of Po = 84)
Answer
  • 210
  • 84
  • 126

Question 9

Question
Which of these statements are true about alpha particles?
Answer
  • Nucleus loses 2 protons and 2 neutrons
  • A neutron in the nucleus is changed into a proton and an electron
  • A helium nucleus is emitted
  • A high-energy electron is emitted

Question 10

Question
Which of these statements are true about beta particles?
Answer
  • Nucleus loses 2 protons and 2 neutrons
  • A neutron in the nucleus is changed into a proton and an electron
  • A helium nucleus is emitted
  • A high-energy electron is emitted

Question 11

Question
What is the decay product of thorium-228 if it undergoes alpha decay? (Z of Th = 90)
Answer
  • Thorium-224
  • Radium-228
  • Radium-224
  • Protactinium-228
  • Thorium-228
  • Protactinium-224

Question 12

Question
What is the decay product of potassium-40 if it undergoes beta decay? (Z of K = 19)
Answer
  • Potassium-40
  • Potassium-36
  • Chlorine-40
  • Chlorine-36
  • Calcium-40
  • Calcium-36

Question 13

Question
Which of these statements are true about alpha radiation?
Answer
  • Very penetrating - stopped by several cm of lead
  • Fairly penetrating - stopped by several mm of aluminium
  • Poorly penetrating - stopped by a sheet of paper
  • Very ionising
  • Fairly ionising
  • Poorly ionising
  • Deflected by a large angle to the positive region of a field
  • Deflected by a small angle to the negative region of a field
  • Not deflected in a field

Question 14

Question
Which of these statements are true about beta radiation?
Answer
  • Very penetrating - stopped by several cm of lead
  • Fairly penetrating - stopped by several mm of aluminium
  • Poorly penetrating - stopped by a sheet of paper
  • Very ionising
  • Fairly ionising
  • Poorly ionising
  • Deflected by a large angle to the positive region of a field
  • Deflected by a small angle to the negative region of a field
  • Not deflected in a field

Question 15

Question
Which of these statements are true about gamma radiation?
Answer
  • Very penetrating - stopped by several cm of lead
  • Fairly penetrating - stopped by several mm of aluminium
  • Poorly penetrating - stopped by a sheet of paper
  • Very ionising
  • Fairly ionising
  • Poorly ionising
  • Deflected by a large angle to the positive region of a field
  • Deflected by a small angle to the negative region of a field
  • Not deflected in a field

Question 16

Question
True or false? The half-life of a radioactive sample is the time taken for the number of parent nuclei to halve.
Answer
  • True
  • False

Question 17

Question
What would be the mass of a radioactive sample after 2 and a half hours if its original mass were 100g and its half-life were half an hour?
Answer
  • 50g
  • 25g
  • 12.5g
  • 6.25g
  • 3.125g
  • 1.5625g
  • 0.78125g
  • 0.390625g

Question 18

Question
Which of these is a use of alpha radiation?
Answer
  • Carbon and uranium dating
  • Smoke alarms
  • Medical tracers
  • Thickness monitoring

Question 19

Question
Which of these is a use of beta radiation?
Answer
  • Carbon and uranium dating
  • Smoke alarms
  • Medical tracers
  • Thickness monitoring

Question 20

Question
Which of these is a use of gamma radiation?
Answer
  • Carbon and uranium dating
  • Smoke alarms
  • Medical tracers
  • Thickness monitoring