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Energy > Energy Stores and Transfers > Flashcards

Energy Stores and Transfers Flashcards

1
Q

How many stores of energy are there?

A

7

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2
Q

What are the 7 stores of energy?

A

Kinetic energy
thermal energy
elastic potential energy
gravitational potential energy
chemical energy
magnetic energy
electrostatic energy

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3
Q

what is kinetic energy?

A

all moving things store kinetic energy eg. a rollercoaster

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4
Q

what is thermal energy?

A

the energy a substance stores because of its temperature eg. hot drinks, fire

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5
Q

what is elastic potential energy?

A

the energy stored in a springy object when you stretch or squash it eg. a hairband

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6
Q

what is gravitational potential energy?

A

the energy stored in an object because of its position above the ground eg. a swimming diver

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7
Q

what is chemical energy?

A

energy stored in a fuel eg. a battery

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8
Q

what is magnetic energy?

A

magnetic fields

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9
Q

what is electrostatic energy?

A

static energy

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10
Q

how many types of energy transfers are there?

A

4

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11
Q

what are the 4 types of energy transfers?

A

mechanical working
electrical working
heating by particles
heating by radiation

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12
Q

what is mechanical working?

A

it involves a force, includes sound waves and surfaces being in contact

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13
Q

what is electrical working?

A

it’s via a current (through wires)

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14
Q

what is heating by particles?

A

heat moving from one place to another via conduction and convection

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15
Q

what is heating by radiation?

A

heat radiation and any electromagnetic waves (light waves)

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16
Q

what is the principle of the conservation of energy?

A

energy can not be created or destroyed, only transferred from one store to another

17
Q

what stores and transfers are happening in a kettle boiling?

A

electrical working
thermal energy store of the heating element
heating by particles
thermal energy store of the water

18
Q

what stores and transfers are happening when a ball is thrown into the air?

A

chemical store of the arm muscles
mechanical working
kinetic energy store of the arm and the ball
mechanical working
gravitational potential energy store of the ball

19
Q

what stores and transfers are happening when a ball is dropped from a height?

A

gravitational potential energy store of the ball
mechanical working
kinetic energy store of the ball

20
Q

what stores and transfers are happening when a car brakes?

A

kinetic energy store of the car
mechanical working
thermal energy of the brakes and tires
heating by particles
thermal energy store of the surroundings

21
Q

what stores and transfers are happening when a moving object collides with a stationary one?

A

kinetic energy store of the moving object
mechanical working
mechanical working - sound waves (wasted)
thermal energy store of the moving and stationary object

Energy (9 decks)

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