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Science > Science 8 > Flashcards

Science 8 Flashcards

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1
Q

Function

A

purpose or task

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2
Q

Design

A

the look and functioning of the building or object before its made

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3
Q

Robotnik

A

A manual worker. Someone who does heavy working with little skill

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4
Q

Zeppelins

A

a rigid airship consisting of a cylindrical trussed and covered frame supported by internal gas cells

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5
Q

mechanical advantage

A

Amount by which a machine can multiply a force; calculated by dividing the output force by the input force

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6
Q

Input Force

A

Force applied to operate a machine

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7
Q

Output force

A

force a machine applies to an object

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8
Q

Force ratio

A

A comparison of the forces applied between two opposing sides

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9
Q

Speed

A

How fast something is going

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10
Q

Speed Ratio

A

measure of how the speed of the object is affected by a machine; calculated by dividing the input distance by the output distance

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11
Q

Ideal Mechanical Advantage

A

The mechanical advantage of a perfect machine with no loss of useful work caused by friction between moving parts

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12
Q

Input Distance

A

The input force that is exerted over a distance

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13
Q

Output distance

A

The output force that is exerted over a distance

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14
Q

Friction

A

force that opposes motion

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15
Q

Portable Water

A

Water that is safe for humans to drink

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16
Q

Salinity

A

Amount of dissolved salt in water

17
Q

Water Quality

A

Measure the amount of substances besides water in a water sample; description on how pure a water sample is

18
Q

Hard water

A

water containing high concentration on calcium and magnesium

19
Q

Distillation

A

technique for separating solutions that involve boiling and condensation

20
Q

Reverse osmosis

A

movement of water through a membrane from an area of lower water concentration to one of higher water concentration; technique used from purifying water

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