Test
AQA GCSE Physics Unit 2.6
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Preguntas del test (20)
1Which of these scientists were credited with discovering radioactivity?
- ABecquerel
- BSievert
- CGray
- DCurie
2True or false? All nuclei, both stable and unstable, undergo radioactive decay.
- AVerdadero
- BFalso
3True or false? Radioactive decay is a random process roughly following a Poisson distribution.
- AVerdadero
- BFalso
4Which five of these are major (contribute to 10% or more) causes of background radiation?
- AMedical uses (e.g. X-rays)
- BNuclear power stations
- CRadon gas in the air
- DRadioactivity in the ground
- ENuclear weapons testing
- FCosmic radiation
- GFood and drink
- HAir travel
5Which of these scientists helped to discover the nucleus?
- ARutherford
- BGeiger
- CMarsden
- DEinstein
- ELavoisier
- FMendeleev
6Which of these conclusions were made about the structure of the atom were made following Geiger and Marsden's alpha particle scattering experiment?
- AThe atom is mostly made of matter
- BThe atom is mostly made of empty space
- CMost of the mass is concentrated in the nucleus
- DThe mass is evenly distributed throughout the atom
- EThe nucleus has a large positive charge
- FThe nucleus has a large negative charge
7True or false? The previous model for the structure of the atom was known as the "pease pottage" model.
- AVerdadero
- BFalso
8How many neutrons can be found in the isotope polonium-210? (Z of Po = 84)
- A210
- B84
- C126
9Which of these statements are true about alpha particles?
- ANucleus loses 2 protons and 2 neutrons
- BA neutron in the nucleus is changed into a proton and an electron
- CA helium nucleus is emitted
- DA high-energy electron is emitted
10Which of these statements are true about beta particles?
- ANucleus loses 2 protons and 2 neutrons
- BA neutron in the nucleus is changed into a proton and an electron
- CA helium nucleus is emitted
- DA high-energy electron is emitted
11What is the decay product of thorium-228 if it undergoes alpha decay? (Z of Th = 90)
- AThorium-224
- BRadium-228
- CRadium-224
- DProtactinium-228
- EThorium-228
- FProtactinium-224
12What is the decay product of potassium-40 if it undergoes beta decay? (Z of K = 19)
- APotassium-40
- BPotassium-36
- CChlorine-40
- DChlorine-36
- ECalcium-40
- FCalcium-36
13Which of these statements are true about alpha radiation?
- AVery penetrating - stopped by several cm of lead
- BFairly penetrating - stopped by several mm of aluminium
- CPoorly penetrating - stopped by a sheet of paper
- DVery ionising
- EFairly ionising
- FPoorly ionising
- GDeflected by a large angle to the positive region of a field
- HDeflected by a small angle to the negative region of a field
- INot deflected in a field
14Which of these statements are true about beta radiation?
- AVery penetrating - stopped by several cm of lead
- BFairly penetrating - stopped by several mm of aluminium
- CPoorly penetrating - stopped by a sheet of paper
- DVery ionising
- EFairly ionising
- FPoorly ionising
- GDeflected by a large angle to the positive region of a field
- HDeflected by a small angle to the negative region of a field
- INot deflected in a field
15Which of these statements are true about gamma radiation?
- AVery penetrating - stopped by several cm of lead
- BFairly penetrating - stopped by several mm of aluminium
- CPoorly penetrating - stopped by a sheet of paper
- DVery ionising
- EFairly ionising
- FPoorly ionising
- GDeflected by a large angle to the positive region of a field
- HDeflected by a small angle to the negative region of a field
- INot deflected in a field
16True or false? The half-life of a radioactive sample is the time taken for the number of parent nuclei to halve.
- AVerdadero
- BFalso
17What 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?
- A50g
- B25g
- C12.5g
- D6.25g
- E3.125g
- F1.5625g
- G0.78125g
- H0.390625g
18Which of these is a use of alpha radiation?
- ACarbon and uranium dating
- BSmoke alarms
- CMedical tracers
- DThickness monitoring
19Which of these is a use of beta radiation?
- ACarbon and uranium dating
- BSmoke alarms
- CMedical tracers
- DThickness monitoring
20Which of these is a use of gamma radiation?
- ACarbon and uranium dating
- BSmoke alarms
- CMedical tracers
- DThickness monitoring
Información
- Descripción
- Twenty questions on the sixth section of Unit 2 in AQA GCSE Physics: Radioactivity.
- Autor
- Matthew T
- Idioma
- English
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- 594
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