Zusammenfassung der Ressource
Frage 1
Frage
What type of matirial can become staticly charged?
Frage 2
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What is transferred from one object to another when one becomes static?
Frage 3
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What charge are electrons?
Antworten
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Positive
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Negitive
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Neutral
Frage 4
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How can you discharge static electricity?
Antworten
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Earthing it
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Grounding it
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Flooring it
Frage 5
Frage
Two objects with the same charge will...
Antworten
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repel each other
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attract each other
Frage 6
Frage
The atoms or molecules that become charged are called...
Frage 7
Frage
Why is a plane earthed when it is refuelled?
Frage 8
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What is resistance measured in?
Frage 9
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How do you work out resistance?
Antworten
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Voltage / Current
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Current / Voltage
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Current * Voltage
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Current / Amps
Frage 10
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What colour is the live wire?
Antworten
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Blue
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Brown
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Yellow and green
Frage 11
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What colour is the neutral wire?
Antworten
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Blue
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Brown
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Yellow and green
Frage 12
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What colour is the earth wire?
Antworten
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Blue
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Brown
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Yellow and green
Frage 13
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Why do electrical devices have fuses?
Antworten
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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
Frage 14
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Why do metal devices have earth wires?
Frage 15
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What is the symbol for a double insulated device?
Antworten
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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
Frage 16
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Ultrasound has a frequency of more than how many hertz?
Frage 17
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which type of nuclear radiation is a wave?
Frage 18
Frage
An atom that has lost an electron has a ______ charge?
Antworten
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positive
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neutral
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negative
Frage 19
Antworten
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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
Frage 20
Frage
What material will stop gamma radiation?
Frage 21
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Which one of these is a way of using gamma in hospitals?
Antworten
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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
Frage 22
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Splitting an atom is...
Frage 23
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How does radioactivity change over time?
Antworten
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It increases
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It decreases
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It stays the same