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Phyiscs yr9 > Static Electricity > Flashcards

Static Electricity Flashcards

1
Q

Isotope meaning?

A

version of an element with the same number of protons but different number of neutrons

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2
Q

Static electricity is when…

A

an object becomes charged, usually by friction

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3
Q

What force makes an object charged?

A

Friction

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4
Q

Which subatomic particle is transferred when an object becomes charged?

A

Electrons

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5
Q

Objects that gain electrons become…

A

negatively charged

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6
Q

Objects that lose electrons become…

A

postively charged

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7
Q

Electric fields- what do they describe?

A

The lines of force surrounding a charged particle

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8
Q

Electric fields show the direction in which…

A

a positive test charge would move

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9
Q

Like charges ++…

A

Repel

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10
Q

Unlike charges -+…

A

attract

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11
Q

Charged objects attract

A

Uncharged objects

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12
Q

Static and safety? Describe about refuelling a vehicle

A
  • Refuellling a car can be dangerous
  • Fuel flowing through pipe can cause static buildup
  • If it discharges via a spark it can make a fire or explosion
  • Connect a wire from pump to vehicle to stop this
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13
Q

How to stop static buildup?

A

Connect a wire from pump to vehicle

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13
Q

What causes static buildup?

A

The fuel flowing through a pipe

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14
Q

What can cause a spark or explosion when refuelling a car?

A

If the static buildup discharges via a spark

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15
Q

Photocopier 1.

A

Drum -ve with static electricity

16
Q

Photocopier 2.

A

Light reflects off the paper on to the drum

17
Q

Photocopier 3.

A

Black toner sticks to the drum where it’s negatively charged

18
Q

Photocopier 4.

A

Black toner TRANSFERRED to a new paper to make the copy

19
Q

Photocopier 5.

A

Heat sticks the toner to paper permanently

20
Q

When the negative balloon is close to the charged wall what happens

A

It attracts the protons and repels the electronsw

Phyiscs yr9 (3 decks)

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