Energy Types and Transformation Flashcards

(21 cards)

1
Q

What is Energy?

A

Energy = ability to do work.

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2
Q

What are the two types of energy?

A

Potential energy = stored energy
Kinetic energy = energy of moving objects.

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3
Q

What is Kinetic Energy?

A

Kinetic Energy involves movement.

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4
Q

What is Translational Kinetic Energy?

A

Energy from an object’s movement.

Example: Speeding cars, cyclonic winds.

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5
Q

What is Light Energy?

A

Energy that warms and heats.

Example: Light bulbs, energy from the Sun.

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6
Q

What is Thermal/Heat Energy?

A

Energy that heats or melts.

Example: Wood fire, rubbing hands.

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7
Q

What is Sound Energy?

A

Energy from vibrating air, enabling sound.

Example: Playing guitar, radio.

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8
Q

What is Electrical Energy?

A

Energy that pushes electric current through a wire.

Example: TVs, computers.

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9
Q

What is Potential Energy?

A

Stored energy that an object has when it’s not moving but is ready to be used.

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10
Q

What are examples of Potential Energy?

A

Example: raised object, dynamite, drawn bow, battery, stretched spring.

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11
Q

What is Gravitational Potential Energy?

A

Energy from lifting an object above the ground.

Example: Ball above ground.

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12
Q

What is Chemical Potential Energy?

A

Energy stored in fuels, released as light and heat when burned.

Example: Petrol, gas, wood.

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13
Q

What is Magnetic Potential Energy?

A

Energy from magnetic fields, when opposite poles attract.

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14
Q

What is Elastic Potential Energy?

A

Energy in stretched or compressed objects. Converts to kinetic energy when released.

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15
Q

What is Nuclear Potential Energy?

A

Energy stored in atoms.

Example: Sun’s hydrogen, uranium in power and bombs.

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16
Q

How is energy measured?

A

Energy is measured in joules (J).

17
Q

What is 1 joule equivalent to?

A

1 joule = energy to lift 1 kg by about 10 cm.

18
Q

What is the conversion of joules to kilojoules?

A

1000 J = 1 kilojoule (kJ).

19
Q

What is the conversion of kilojoules to megajoules?

A

1000 kJ = 1 megajoule (MJ).

20
Q

What is Energy Transfer?

A

Passing energy from one object to another.

Example: Kinetic energy from feet to ball.

21
Q

What is Energy Transformation?

A

Changing energy from one form to another.

Example: Electrical energy → sound, light, heat (TV, tablet, computer).