Test
Radioactivity
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Preguntas del test (24)
1What happens in ionisation?
- ARadiation causes nuclear fission between between atoms
- BRadiation can knock out electrons in atoms so they become charged (ions) as they lose an electron
2Half life:
- Ahalf the time it takes for all nuclei in a radioactive sample to decay
- Bhalf the time it takes for a radioactive sample to decay
- Cthe time taken for half the number of nuclei in a radioactive sample to decay
- Dthe time taken for half of the radioactive sample to decay
3Half life is unpredictable yet we can predict how much will decay
- AVerdadero
- BFalso
4Half life isn't random; it can be predicted when a sample will decay
- AVerdadero
- BFalso
5Which are uses of radiation?
- AX-rays and killing cancers
- BPreserving food i.e killing its bacteria
- CSterilising medical equipment
- DPreserving water
- EPowering houses
- FCarbon/ uranium dating
- GThickness monitoring
- HRadioactive trackers for environmental and medical use
- ISmoke detectors
- JPowering heat
6Beta radiation is:
- Aan electron
- Ba neutron
- Ca ray
7Beta radiation has ...
- Aa -1 charge
- Ba +2 charge
8Alpha radiation has:
- Aa +2 charge with 2 protons and 2 neutrons
- Ba -1 charge because it is an electron
- Cno mass because it is a ray
9Gamma rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
- AVerdadero
- BFalso
10Beta rays occur when a nucleus has too many neutrons compared to protons so a neutron changes to a proton (and a B particle)
- AVerdadero
- BFalso
11Gamma rays would be emitted after alpha and/or beta particles
- AVerdadero
- BFalso
12The most ionising (turning atoms into ions) radiation is
- AGamma
- BAlpha
- CBeta
13The least ionising* radiation is:
* = Ionising: turning atoms into charged particles/ ions- AGamma
- BBeta
- CAlpha
14Gamma is:
- Athe least ionising form of radiation
- Bthe most ionising form of radiation
- Cthe least penetrating form of radiation
- Dthe most penetrating form of radiation
15Alpha radiation is
- Athe least ionising
- Bthe most ionising
- Cthe least penetrating
- Dthe most penetrating
16Beta radiation is
- Athe most ionising
- Bthe least ionising
- Cthe most penetrating
- Din between alpha and gamma
- Ethe least penetrating
17Which is the odd one out?
- AGamma
- BAlpha
- CBeta
18An alpha particle is a helium nucleus
- AVerdadero
- BFalso
19Gamma rays are the least ionising because
- Athey are a ray and tend to pass through atoms rather than collide with them
- Bthey move around atoms and don't collide with them
20Ionisation happens when particles (alpha or beta) collide with atoms, knocking out electrons, meaning they are now charged (ions).
- AVerdadero
- BFalso
21Gamma rays are the most ionising.
- AVerdadero
- BFalso
22Alpha particles are quite large (and slow)
- AVerdadero
- BFalso
23Since alpha particles are quite large, this means they struggle to pass through paper or more then 5mm of air as they are too big to do so
- AVerdadero
- BFalso
24Since alpha particles are quite large, they are more likely to collide with atoms and knock out their electrons
- AVerdadero
- BFalso
Información
- Descripción
- (Physics) Science Test sobre Radioactivity, creado por KittyG-S el 25/05/2014.
- Autor
- KittyG-S
- Idioma
- English
- Visitas
- 108
- Historial
- Creado el 25 may 2014 · actualizado el 6 mar 2016
- Etiquetas
- Valoración
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