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My Class > SCIENCE UNIT TEST VOCAB > Flashcards

SCIENCE UNIT TEST VOCAB Flashcards

1
Q

non mechanical system

A

Procedure or process designed to perform a task along with the people involved.

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2
Q

component

A

part of a system

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3
Q

consumer

A

: individual who uses the goods or services provided by a system

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4
Q

productivity

A

amount of output that is produced per unit of time

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5
Q

automated system

A

replacement of human workers with machines that are controlled by a computer.

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6
Q

criteria

A

standard rule or est on which a decision or judgment can be made

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7
Q

quantitative assesement

A

analysis of numerical data

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8
Q

qualitative

A

analysis made by observation

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9
Q

mechanism

A

combination of simple machines working together to perform a specific function

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10
Q

simple machine

A

machine that requires the application of a single force to do work

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11
Q

lever

A

simple machine that is made up of a rigid bar supported at one point, the fulcrum

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12
Q

pulley

A

simple machine consisting of a grooved wheel with a rope or cable looped around it. Can change the direction of the force or increase the output force, depending on whether it’s fixed or movable.

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13
Q

inclined plane

A

simple machine consisting of a sloping surface on which an object can move

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14
Q

screw

A

simple machine consisting of an inclined plane wrapped around à rod.

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15
Q

wedge

A

simple machine consisting of an inclined plane that travels through an object or material.

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16
Q

wheel and axle

A

Simple machine consisting of a shaft or axle that is attached to à larger disk called the wheel.

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17
Q

efficiency

A

Measurement of the useful work done by a machine compared to the work needed to operate the machine.

18
Q

system

A

Group of individual parts or procedures that work together as a complex whole to accomplish a desired task

19
Q

force

A

Push or pull that acts on an object ; measured in newtons

20
Q

mechanical system

A

Group of physical parts that interact with each other and function as à whole in order to complete à task

21
Q

contact force

A

Force that acts between objects that are touching

22
Q

action at a distance force

A

Force that can push or pull an object without touching it. Also called a non-contact force.

23
Q

gravity

A

Force of attraction between two objects because of their mass.

24
Q

weight

A

Amount of force on an object due to gravity

25
Q

mass

A

Amount of matter in an object.

26
Q

spring scale

A

Most common force meter. Consists of à spring with à hook on the end. As more force is applied to the hook, the spring stretches farther

27
Q

work

A

Amount of effort expended when à force causes an object to move à distance and energy is transferred

28
Q

energy

A

ability to do work

29
Q

gravitational potential energy

A

potential energy of an object that is able to fall

30
Q

IMA

A

mechanical advantage of a machine that has no friction

31
Q

machine

A

any mechanical system that reduces the force required to accomplish work
Kinetic energy : energy of an object in motion

32
Q

mechanical system

A

group of physical parts that interact with each other and function as a whole in order to complete a task

33
Q

mechanism

A

combination of simple machines working together to perform a specific function

34
Q

non mechanical system

A

procedure or process designed to perform a task along with the people involved

35
Q

output force

A

force that a machine applies to an object;symbolized by F OUl

36
Q

potential energy

A

energy that is stored

37
Q

pressure

A

amount of force applied to a given area

38
Q

system

A

: group of individual parts or procedures that work together as a complex whole to accomplish à desired task

39
Q

useful output force

A

work that a machine is designed to perform

40
Q

weight

A

amount of force on an object due to gravity

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