Test
P4
Preguntas del test (23)
1What type of matirial can become staticly charged?
- AAn insulator
- BA non conducter
- CA conductor
- DA non insulator
- EAn insulator or conductor
2What is transferred from one object to another when one becomes static?
- AProtons
- BNeutrons
- CElectons
- DProtons, Neutrons and electrons
3What charge are electrons?
- APositive
- BNegitive
- CNeutral
4How can you discharge static electricity?
- AEarthing it
- BGrounding it
- CFlooring it
5Two objects with the same charge will...
- Arepel each other
- Battract each other
6The atoms or molecules that become charged are called...
- Aions
- Bopposites
- Cstatic
7Why is a plane earthed when it is refuelled?
- ASo the static electricity does not spark near the flammable liquid
- BSo it doesn't blow away
- CSo the static electricity cant shock anyone in the plane
8What is resistance measured in?
- Aohms
- Bounces
- Cvolts
9How do you work out resistance?
- AVoltage / Current
- BCurrent / Voltage
- CCurrent * Voltage
- DCurrent / Amps
10What colour is the live wire?
- ABlue
- BBrown
- CYellow and green
11What colour is the neutral wire?
- ABlue
- BBrown
- CYellow and green
12What colour is the earth wire?
- ABlue
- BBrown
- CYellow and green
13Why do electrical devices have fuses?
- ASo the device is protected from a power surge
- BSo the device doesn't work too hard
- CSo you can turn the device off easly
14Why do metal devices have earth wires?
- ASo that if there is an electrical fault and the outer casing becomes charged it will earth through the earth wire and not through someone touching it
- BTo get power
- CTo make the fuse work
15What is the symbol for a double insulated device?
- AA square inside another square
- BA triangle inside another triangle
- CA circle inside another circle
- DA hexagon inside another hexagon
16Ultrasound has a frequency of more than how many hertz?
- A20000
- B10000
- C15000
17which type of nuclear radiation is a wave?
- AAlpha
- BBeta
- CGamma
18An atom that has lost an electron has a ______ charge?
- Apositive
- Bneutral
- Cnegative
19What is half life?
- AThe time it takes for a radioactive source to decay
- BThe time it takes for half a radioactive source to decay
- CHalf the time a radioactive source takes to kill someone
20What material will stop gamma radiation?
- APaper
- BAliminium
- CLead
21Which one of these is a way of using gamma in hospitals?
- ATo sterilise objects
- BTo remove a kidney stone
- CTo scan an unborn baby
22Splitting an atom is...
- AFussion
- BFission
- CFession
23How does radioactivity change over time?
- AIt increases
- BIt decreases
- CIt stays the same
Información
- Descripción
- GCSE Science Test sobre P4, creado por Joe Waymouth el 31/05/2013.
- Autor
- Joe Waymouth
- Idioma
- English
- Visitas
- 106
- Etiquetas
- Valoración
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