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Paige - Brooke's olds 3rd Grade - Study Guides > Lesson 99 - Energy > Flashcards

Lesson 99 - Energy Flashcards

1
Q

What is energy?

A

ability to do work or cause change

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2
Q

What is sound energy?

A

energy that we can hear

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3
Q

What causes sound to happen?

A

when something vibrates

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4
Q

How is sound described?

A

loud (shout) or soft (whisper)

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5
Q

How is pitch descirbed?

A

high (bird’s chirp) or low (tuba)

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6
Q

What is light energy?

A

energy that we can see

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7
Q

How does light travel?

A

outward from it source in all directions, travels in straight lines called rays

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8
Q

What kind of materials allow light to pass through them?

A

Transparent materials, such as air and glass

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9
Q

What kinds of objects do not allow light to pass through them?

A

opaque, such as wood and brick

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10
Q

What does light do?

A

Light reflects/bounces off objects and Light refracts/bends or changes direction

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11
Q

What happens to colors of light?

A

they are reflected(bounce off) not abdorbed

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12
Q

What is electrical energy?

A

movement of electic charges, called electricity, use it to: run AC, blow dryer

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13
Q

What is a circuit?

A

path for electricity to around

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14
Q

What is a circuit made up of?

A

battery, wire, bulb and switch

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15
Q

What does a battery provide?

A

provides power

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16
Q

What does a bulb provide?

A

provide light

17
Q

What does a switch do?

A

opens and closes the electic circuit

18
Q

What do the wires do?

A

allows the power from the battery to the flow through to the bulb

19
Q

What is mechanical energy?

A

energy that uses musle or motor, car engine, muscles in our body

20
Q

What is heat energy?

A

transfer of energy from a warmer object to a colder object

21
Q

What is a conductor?

A

material that allows heat and/or electricity to flow through easily EX: metals and water

22
Q

What an insulator?

A

material that stops the movement of heat and/or electricty EX: rubber, plastic, wool, glass and wood

Paige - Brooke's olds 3rd Grade - Study Guides (14 decks)

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