CP3- Conservation Of Energy Flashcards

1
Q

What are the 8 main energy stores?

A

Chemical, kinetic, gravitational potential, elastic, thermal, magnetic, electrostatic, nuclear

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2
Q

What are examples of chemical energy?

A

Fuel, food, battery

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3
Q

What are examples of kinetic energy?

A

Moving objects

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4
Q

What are examples of gravitational potential energy?

A

Raised mass

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5
Q

What are examples of elastic energy?

A

Stretched spring

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6
Q

What are examples of thermal energy?

A

Hot object

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7
Q

What are examples of magnetic energy?

A

Two magnets

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8
Q

What are examples of electrostatic energy?

A

Two charges

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9
Q

What are examples of nuclear energy?

A

Radioactive decay

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10
Q

In what 4 ways is energy transferred from one store to another?

A

Mechanically, electrically, thermal, radiation

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11
Q

The rate at which thermal energy is transferred through the wall of a house depends on what?

A

The difference in temperature between inside and outside, the thickness of the walls, the material the walls are made of

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12
Q

What is the equation for efficiency?

A

Useful energy transferred by the machine/total energy supplied to the machine

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13
Q

What are non-renewable energy resources?

A

Resources that will eventually run out, they are available all the time

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14
Q

What are examples of non-renewable energy resources?

A

Nuclear fuels, fossil fuels

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15
Q

What are renewable energy resources?

A

They do not run out, do not cause pollution or emit carbon dioxide

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16
Q

What are examples of renewable energy resources?

A

Solar cells, bio-fuels, hydroelectricity, tidal power, wind turbines

17
Q

What is the equation for the change in gravitational potential energy?

A

Mass x change in gravitational field strength x change in vertical height

18
Q

What is the equation for kinetic energy?

A

1/2 x mass x speed^2