2562835
Frage 1
Frage
Ernest Rutherford came up with the 'Plum Pudding' model.
Antworten
- True
- False
Frage 2
Frage
In 1909, Rutherford tried firing alpha particles at thin gold foil to see what happened.
Antworten
- True
- False
Frage 3
Frage
Most of the alpha particles in Rutherford's experiment went straight through the gold foil. What did Rutherford figure out from this?
Antworten
-
Gold is mostly empty space.
-
The nucleus of an atom is very small compared to the rest of it.
-
There are positive particles in the atom.
-
Alpha particles cannot travel very far.
Frage 4
Frage
Some of the alpha particles in Rutherford's experiment deflected when they through the gold foil. What did Rutherford figure out from this?
Antworten
-
Gold is mostly empty space.
-
The nucleus of an atom is very small compared to the rest of it.
-
There are positive particles in the atom.
-
Alpha particles cannot travel very far.
Frage 5
Frage
A few of the alpha particles in Rutherford's experiment bounced straight back from the gold foil. What did Rutherford figure out from this?
Antworten
-
Gold is mostly empty space.
-
The nucleus of an atom is very small compared to the rest of it.
-
There are positive particles in the atom.
-
Alpha particles cannot travel very far.
Frage 6
Frage
Rutherford's idea was only accepted after his death.
Antworten
- True
- False
Frage 7
Frage
Radioactive decay is a random process.
Antworten
- True
- False
Frage 8
Frage
Which type of radiation is a fast moving electron?
Antworten
-
Gamma
-
Delta
-
Alpha
-
Beta
Frage 9
Frage
Beta radiation is the only type of radiation that is not a particle.
Antworten
- True
- False
Frage 10
Frage
What type of radiation has an unlimited range in air?
Antworten
-
Gamma
-
Delta
-
Alpha
-
Beta
Frage 11
Frage
Paper can stop alpha particles.
Antworten
- True
- False
Frage 12
Frage
Which type of radiation has the same structure as a helium nucleus?
Antworten
-
Gamma
-
Delta
-
Alpha
-
Beta
Frage 13
Frage
Alpha particles pose no risk to humans.
Antworten
- True
- False
Frage 14
Frage
What type of radiation source do many people have in their homes?
Antworten
-
Gamma
-
Delta
-
Alpha
-
Beta
Frage 15
Frage
Alpha particles can only travel a few centimetres in air.
Antworten
- True
- False
Frage 16
Frage
What is the relative charge and relative mass of an alpha particle?
Antworten
-
Relative charge: +4 Relative mass: 4
-
Relative charge: -1 Relative mass: 0
-
Relative charge: +2 Relative mass: 0
-
Relative charge: +2 Relative mass: 4
Frage 17
Frage
What is the relative charge and relative mass of a beta particle?
Antworten
-
Relative charge: +4 Relative mass: 4
-
Relative charge: -1 Relative mass: 0
-
Relative charge: -2 Relative mass: 0
-
Relative charge: +2 Relative mass: 4
Frage 18
Frage
Gamma radiation is uncharged and has no mass.
Antworten
- True
- False
Frage 19
Frage
What is the range of beta radiation in air?
Antworten
-
1 metre
-
5 metres
-
50 metres
-
5 centimetres
Frage 20
Frage
Alpha is the most ioning type of radiation.
Antworten
- True
- False
Frage 21
Frage
Beta radiation is easily deflected by a magnetic field as it is a fast moving electron.
Antworten
- True
- False
Frage 22
Frage
Which of these is NOT a definition of half-life?
Antworten
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The average weight of a certain amount of nuclei in a radioactive isotope sample after it has halved.
-
The time it takes for the activity of a sample to halve.
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The time it takes for the count rate of a sample to halve.
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The average time it takes for the number of nuclei in a radioactive isotope sample to halve.
Frage 23
Frage
The half-life of a particular isotope varies.
Antworten
- True
- False
Frage 24
Frage
The half-lives of different isotopes range from seconds to many millions of years.
Antworten
- True
- False
Frage 25
Frage
What is the half-life of Carbon-14?
Antworten
-
5,700 years
-
570 years
-
57 years
-
5.7 years
Frage 26
Frage
What type of radiation and what length of half-life is needed for a radioactive tracer?
Antworten
-
Gamma radiation, long half-life
-
Beta radiation, short half-life
-
Gamma radiation, short half-life
-
Alpha radiation, short half-life
Frage 27
Frage
What type of radiation and what length of half-life is needed for a smoke alarm?
Antworten
-
Gamma radiation, short half-life
-
Beta radiation, short half-life
-
Beta radiation, long half-life
-
Alpha radiation, long half-life
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