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- @Alpha particles are:
- Atomic nuclei
- Electrons
- Electromagnetic waves
-
- @Two samples of a radioactive isotope are shown. Which one of the following is the same for BOTH samples?
- #isotope
- Half-life
- Number of atoms
- Amount of emitted radiation
-
- @Two samples of a radioactive isotope are shown. Which of the following statements is INCORRECT?
- #isotope
- The amount of emitted radiation by each sample is the same
- The half-life of each sample is the same
- The numbers of protons in the nucleus of an atom, in each sample, is equal
-
- @Beta particles are:
- Electrons
- Atomic nuclei
- Neutral atoms
-
- @Gamma rays are:
- Electromagnetic waves
- Atomic nuclei
- Electrons
-
- @Which one of the following has the most mass?
- Alpha particles
- Beta particles
- Gamma rays
-
- @Which one of the following produces the least amount of ionisation?
- Gamma rays
- Beta particles
- Alpha particles
-
- @The following radiations were put through a magnetic field. Which is in the correct order of increasing deflection?
- Gamma, alpha and beta
- Alpha, beta and gamma
- Beta, gamma and alpha
-
- @In a cloud chamber the tracks of alpha particles are:
- Long and straight
- Short and curved
- Totally invisible
-
- @The graphs show how the activity falls over time for three samples. Which sample has the shortest half life?
- #halflife
- Sample X
- Sample Y
- Sample Z
-
- @The graphs show how the activity falls over time for three samples. Which sample has the longest halflife?
- #halflife
- Sample Y
- Sample Z
- Sample X
-
- @In air beta particles have a range of about:
- 1m
- 1mm
- 1cm
-
- @If the following were allowed to pass near a charged gold leaf electroscope, which would produce the greatest effect?
- Alpha radiation
- Beta radiation
- Gamma radiation
-
- @Which one of the following is also an electromagnetic wave?
- Gamma rays
- Alpha particles
- Beta particles
-
- @An atom becomes ionised when:
- it loses electrons
- it loses neutrons
- it loses protons
-
- @Radioactivity was first discovered about:
- 1900
- 1800
- 1700
-
- @What is background radiation?
- Natural radiation from rocks and space
- Radiation from early atomic experiments
- Fallout from nuclear accidents
-
- @Alpha particles are the nuclei of what gas?
- Helium
- Hydrogen
- Argon
-
- @What radiation needs thick lead to stop it?
- Gamma
- Alpha
- Beta
-
- @Which type of radiation is affected by thin card?
- Alpha
- Beta
- Gamma
-
- @Why is a G-M tube (Geiger-Muller) poor at detecting alpha radiation?
- The radiation can't easily pass through the 'window' of the tube
- Alpha particles produce little or no ionisation
- G-M tubes are not really designed to detect ions
-
- @Which form of radiation also has a negative charge?
- Beta
- Alpha
- Gamma
-
- @Which form of radiation also has a positive charge?
- Alpha
- Beta
- Gamma
-
- @Which form of radiation has no charge?
- Gamma
- Alpha
- Beta
-
- @What are isotopes?
- Atoms which are chemically the same, but have different massĀ
- Atoms which have different numbers of protons in their nucleus
- Atoms that have lost their outer electrons
-
- @A neutron hits a Uranium atom, which splits, and produces more neutrons. What form of energy do the neutrons have?
- #u235
- Kinetic energy
- Potential energy
- Electrical energy
-
- @A neutron hits a Uranium atom, which splits, and produces more neutrons. This kind of reaction is called a:
- #u235
- Chain reaction
- Continuous reaction
- Redox reaction
-
- @A neutron hits a Uranium atom, which splits, and produces more neutrons. The two new atoms are:
- #u235
- Usually radioactive
- Helium nuclei
- Harmless isotopes of Uranium
-
- @A fast moving alpha particle approaches a gold atom. What happens?
- #gold
- It 'bounces' back from the gold atom
- It is absorbed by the gold atom
- It passes through the nucleus
-
- @A cloud chamber produces the tracks shown. After five minutes:
- #cloud1
- different tracks in different places will be seen
- the same tracks in exactly the same places will be seen, only shorter
- the same tracks will be seen, only much thicker