Final 6 Flashcards

1
Q

What do we call a mixture in which the individual parts cannot be seen as separate?

A

Homogeneous

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2
Q

What do we call a mixture in which the individual parts can easily be seen?

A

Heterogeneous

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3
Q

Which law states that objects at rest tend to stay at rest and object in motion tend to stay in motion in a straight line unless acted upon by a force?

A

Newton’s First Law of Motion

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4
Q

Which law States that for every action there is an equal and opposite reaction?

A

Newton’s Third Law

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5
Q

True or false: Friction is a force that resists movement between to objects

A

True

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6
Q

True or false: Friction is a force that resists movement between two objects

A

True

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7
Q

True or false: lubricant increases friction to make something difficult to move

A

False

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8
Q

Can energy be created or destroyed

A

No

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9
Q

True or false: kinetic energy is stored energy?

A

False

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10
Q

True or false: stored energy is referred to as Potential energy

A

True

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11
Q

Name two kinds of renewable energy

A

Wind energy and solar energy

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12
Q

Name two forms of energy we get from fossils

A

Oil and natural gas

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13
Q

What do we call vibrations that travel through a material from a source?

A

Sound waves

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14
Q

True or false: ultrasound is too low for our ears to hear

A

False

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15
Q

What does ROY G. BIV stand for?

A
Red
Orange 
Yellow 
Green 
Blue
Indigo
Violet
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16
Q

What are two kinds of invisible light at each end of the light spectrum?

A

Ultraviolet and infrared

17
Q

True or false: Radiant heat and travel through space

A

True

18
Q

What three things are needed to start a fire?

A

Oxygen
Fuel
Heat

19
Q

True or false: electricity flows into your house through a direct current

A

False

20
Q

What is the region around a magnet that produces a magnetic force?

A

Magnetic field

21
Q

True or false: the earth core is made out of marshmallow

A

False

22
Q

True Or false: a magnet powered by an electric current that can be turned off, it’s called an electromagnetic

A

True

23
Q

What lever has the fulcrum in the center and a load and effort on opposite ends?

A

First class lever

24
Q

What must a wheel have to work?

A

Axle

25
Q

Which pulley system makes work easier?

A

Double pulley system