117378
Descrição
Quiz por Joe Waymouth, atualizado more than 1 year ago
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Criado por Joe Waymouth
aproximadamente 11 anos atrás
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Questão 1
Questão
What type of matirial can become staticly charged?
Responda
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An insulator
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A non conducter
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A conductor
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A non insulator
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An insulator or conductor
Questão 2
Questão
What is transferred from one object to another when one becomes static?
Responda
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Protons
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Neutrons
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Electons
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Protons, Neutrons and electrons
Questão 3
Questão
What charge are electrons?
Responda
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Positive
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Negitive
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Neutral
Questão 4
Questão
How can you discharge static electricity?
Responda
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Earthing it
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Grounding it
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Flooring it
Questão 5
Questão
Two objects with the same charge will...
Responda
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repel each other
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attract each other
Questão 6
Questão
The atoms or molecules that become charged are called...
Responda
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ions
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opposites
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static
Questão 7
Questão
Why is a plane earthed when it is refuelled?
Responda
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So the static electricity does not spark near the flammable liquid
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So it doesn't blow away
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So the static electricity cant shock anyone in the plane
Questão 8
Questão
What is resistance measured in?
Responda
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ohms
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ounces
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volts
Questão 9
Questão
How do you work out resistance?
Responda
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Voltage / Current
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Current / Voltage
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Current * Voltage
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Current / Amps
Questão 10
Questão
What colour is the live wire?
Responda
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Blue
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Brown
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Yellow and green
Questão 11
Questão
What colour is the neutral wire?
Responda
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Blue
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Brown
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Yellow and green
Questão 12
Questão
What colour is the earth wire?
Responda
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Blue
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Brown
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Yellow and green
Questão 13
Questão
Why do electrical devices have fuses?
Responda
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So the device is protected from a power surge
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So the device doesn't work too hard
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So you can turn the device off easly
Questão 14
Questão
Why do metal devices have earth wires?
Responda
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So 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
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To get power
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To make the fuse work
Questão 15
Questão
What is the symbol for a double insulated device?
Responda
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A square inside another square
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A triangle inside another triangle
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A circle inside another circle
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A hexagon inside another hexagon
Questão 16
Questão
Ultrasound has a frequency of more than how many hertz?
Responda
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20000
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10000
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15000
Questão 17
Questão
which type of nuclear radiation is a wave?
Responda
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Alpha
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Beta
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Gamma
Questão 18
Questão
An atom that has lost an electron has a ______ charge?
Responda
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positive
-
neutral
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negative
Questão 19
Questão
What is half life?
Responda
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The time it takes for a radioactive source to decay
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The time it takes for half a radioactive source to decay
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Half the time a radioactive source takes to kill someone
Questão 20
Questão
What material will stop gamma radiation?
Responda
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Paper
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Aliminium
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Lead
Questão 21
Questão
Which one of these is a way of using gamma in hospitals?
Responda
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To sterilise objects
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To remove a kidney stone
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To scan an unborn baby
Questão 22
Questão
Splitting an atom is...
Responda
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Fussion
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Fission
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Fession
Questão 23
Questão
How does radioactivity change over time?
Responda
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It increases
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It decreases
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It stays the same
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