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Science Class Deandra > Energy > Flashcards

Energy Flashcards

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1
Q

What is energy?

A

It is the ability to cause change.
OR
It is the ability to do work.

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2
Q

What is energy measured in?

A

Joules

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3
Q

What are the main states of energy?

A

Kinetic energy
Potential energy

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4
Q

What is potential energy?

A

It is the energy of position.

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5
Q

What is kinetic energy?

A

It is the movement of energy.

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6
Q

What are the forms of potential energy?

A

Chemical energy
Nuclear energy
Mechanical energy
Gravitational potential energy
Elastic potential energy

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7
Q

What is chemical energy?

A

It is the energy stored in the bonds of atoms and molecules.

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8
Q

What is nuclear energy?

A

It is the energy that is obtained from nuclear reaction.

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9
Q

Mechanical energy is stored in two ways which is:

A

Gravitational potential energy
Elastic potential energy

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10
Q

What is gravitational potential energy?

A

It is the energy stored in an object due to its position above the ground.

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11
Q

What is elastic potential energy?

A

It is the energy stored in objects due to tension.

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12
Q

What are the forms of kinetic energy?

A

Electromagnetic energy
Thermal energy
Electric energy
Sound energy

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13
Q

What is electromagnetic energy?

A

It is the energy that travels in transverse waves.

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14
Q

What is thermal energy?

A

It is the movement of particles (atoms and molecules) in a substance.

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15
Q

What is electric energy?

A

It is the movement of electrons.

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16
Q

What is sound energy?

A

It is the movement of energy through substances in the form of longitudinal/compression waves.

17
Q

What is energy conversion?

A

It is the changing of one form of energy into another.

18
Q

What are the sources of energy?

A

Water
Geothermal
Nuclear power plant
Solar
Wind

19
Q

What is renewable energy?

A

Renewable energy sources can be replenished in a very short period of time and they never run out.

20
Q

What is non-renewable energy?

A
21
Q

What are some challenges faced by Caribbean countries in meeting their energy needs?

A

Cost
Availability
Accessibility

22
Q

What are some ways to deal with energy crisis?

A

1.Conserving energy
2.Exploring and develop renewable energy sources

23
Q

Why should we conserve energy?

A
  1. Fossil fuels are in short supply
  2. Electricity is expensive to generate and supply.
  3. Burning of fossil fuels also produces dangerous gases.

Science Class Deandra (18 decks)

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