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Science 06 > Electricity > Flashcards

Electricity Flashcards

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1
Q

What is a free electron?

A

The electrons that are not bound within the atom and free to move are free electrons

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2
Q

What is a conductor?

A

a material or device that conducts or transmits heat, electricity, or sound, especially when regarded in terms of its capacity to do this.

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3
Q

What is a insulator?

A

An electrical insulator is a material in which electric current does not flow freely

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4
Q

Is wood and glass insulators?

A

Wood and glass are insulators.

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5
Q

Is Silver Gold. Copper. Aluminum insulators?

A

No they are conductors

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6
Q

how is lightning formed?

A

Negative charges gather near the base of the cloud, while positive charges build in the top of the cloud.

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7
Q

three common types of lightning

A

three common types of lightning: cloud to ground, cloud to cloud and cloud to air.

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8
Q

What are the 2 main types of lightning

A

Sheet and Fork lightning.

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9
Q

What are the rule of static electricity

A

Static electricity will always want to flow from a higher voltage to a lower voltage.

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10
Q

Where does Sheet lightning appear

A

Sheet lightning is also known as intra cloud lightning so it happens inside the cloud.

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11
Q

Is lightning current or static electricity

A

Static

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12
Q

Where does Fork lightning appear

A

Fork lightning zig zags down to the ground. (Cloud to ground)

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13
Q

Difference between AC and DC power

A

Direct current (DC) flows in one direction, while alternating current (AC) changes direction periodically.

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14
Q

What 2 items can be good insulators

A

Plastic and Rubber

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15
Q

What is a good conductor

A

Metal

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16
Q

Usually a positive lightining strike has how many strikes

A

It usually has 1 strike

17
Q

Usually a negative lightning strike has how many strikes

A

It usually has 2 or more

18
Q

difference between series circuit and parallel

A

In a series circuit, the same amount of current flows through all the components placed in it. In parallel circuits, the components are placed in parallel with each other.

19
Q

What are the 3 types of circuits

A

Simple circuits, Series circuits, and Parallel circuits

20
Q

What are electrons?

A

Electrons are “subatomic” particles - “subatomic” means “smaller-than-atoms”. Electrons are also found in all atoms, and are never in the centre of the nucleus.

21
Q

How do particles become positively or negative charged?

A

The particle can be positively charged if there are more protons than electrons
More Protons: positive
More electrons: negative

22
Q

What is electricity

A

Electricity is a form of energy. It exists when free electrons move.

23
Q

What is an electrical current

A

An electric current is a stream of charged particles, such as electrons moving through an electrical conductor or space

24
Q

What is static electricity

A

Static electricity is when two objects are rubbed together and the objects acquire equal and opposite charges.

25
Q

Name 3 renewable Energy sources

A

Hydro-Electricity
Solar Energy
Wind

26
Q

What is geothermal energy

A

Geothermal energy is heat that is generated within the Earth. (Geo means “earth,” and thermal means “heat” in Greek.)

27
Q

What is hydroelectricity

A

Hydroelectricity is electricity from incredibly fast flowing water

28
Q

What is tidal energy

A

Tidal energy is power produced by the surge of ocean waters during the rise and fall of tides.

29
Q

What is nuclear fusion

A

Nuclear fusion is the fusion of nuclei with a burst of energy

30
Q

Name 3 NON renewable energy sources

A

Fossil Fuel
Natural Gas
Petroleum

31
Q

What are some examples of fossil fuels

A

Coal and natural gases

32
Q

What is Geo-thermal Energy

A

Geothermal energy is heat that is generated within the Earth.

33
Q

What is Hydrogen electricity

A

Hydrogen fuel refers to hydrogen which is burned as fuel with oxygen.

34
Q

What is solar electricity

A

Solar electricity is electricity from the sun to solar panels

Science 06 (4 decks)

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