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Science > Structures and force > Flashcards

Structures and force Flashcards

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1
Q

structures

A

an object with a defined size and shape which serves a purpose or function. the parts of a structure have a specific arrangement that remains the same

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2
Q

function

A

of a structure or object, its the main purpose

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3
Q

forces

A

a push or pull, or anything that causes a change in the motion of an object

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4
Q

load

A

the weight carried or supported by a structure

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5
Q

natural structures

A

a object or structure not made by people

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6
Q

manufactured structures

A

an object or structure made by humans

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7
Q

desighn

A

the shape and size or a structure and the materials of which is it composed

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8
Q

Mass structure

A

a structure, natural or manufactured that is made by the piling up of material;example of a mass structure include a pyramid and a snow front

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9
Q

frame structure

A

a type of structure in which a skeleton of material supports the weight of the other parts

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10
Q

shell structure

A

a type of structure that obtains its strength from a thin carefully shaped outer layer of material and that required no internal frame; example of a shell structure include an igloo and an egg

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11
Q

Aesthetic

A

A branch of philosophy that studies the principles of beauty;the properties of an object that make it pleasing to the senses

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12
Q

Margin of safety

A

The need for something built or manufactured to perform as expected for a long time, so that people’s safety and health are not at risk.in a structure s margin of safety would ensure that the structure has extra strength to support more load than normal

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13
Q

Properties

A

The characteristics of materials; every material has its own unique properties example of properties include colour odour and density

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14
Q

Composite

A

Of material made up of several different materials with different properties to fulfill a specific purpose

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15
Q

Lamination

A

A process in which a layer of material is pressed or glued onto other layers

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16
Q

4 consideration for choosing material

A

Cost
Appearance
Environmental impact
Energy efficiency

17
Q

Mobile joints

A

A joint that is designed to allow movement example of a mobile joint include a door hinge and an elbow

18
Q

Rigid joint

A

A device designed to fix an object into place a joint that allows no movement example of a ridged joint include nail and a screw

19
Q

5 categories of ridged joints

A 
Fasteners 
Interlocking shapes 
Ties 
Adhesive 
Melting (welding and soldering
20
Q

Aesthetic

A

A branch of philosophy that studies the principles of beauty;the properties of an object that make it pleasing to the senses

21
Q

Margin of safety

A

The need for something built or manufactured to perform as expected for a long time, so that people’s safety and health are not at risk.in a structure s margin of safety would ensure that the structure has extra strength to support more load than normal

22
Q

Properties

A

The characteristics of materials; every material has its own unique properties example of properties include colour odour and density

23
Q

Composite

A

Of material made up of several different materials with different properties to fulfill a specific purpose

24
Q

Lamination

A

A process in which a layer of material is pressed or glued onto other layers

25
Q

4 consideration for choosing material

A

Cost
Appearance
Environmental impact
Energy efficiency

26
Q

Mobile joints

A

A joint that is designed to allow movement example of a mobile joint include a door hinge and an elbow

27
Q

Rigid joint

A

A device designed to fix an object into place a joint that allows no movement example of a ridged joint include nail and a screw

28
Q

5 categories of ridged joints

A 
Fasteners 
Interlocking shapes 
Ties 
Adhesive 
Melting (welding and soldering
29
Q

Mass

A

The amount of matter a substance; often measured with a balance

30
Q

Primary Standard

A

The name given to a small cylinder of metal on which the kilogram(kg) is based; equivalent to 1kg

31
Q

Kilogram (kg)

A

The primary measurement of mass In SI, equal to 100g; 1kg is the primary standard for mass

32
Q

Balance

A

A device to measure mass; many balances work by using the force of gravity

33
Q

Forces

A

A push or pull, or anything that causes a change in the motion of an object

34
Q

Newton (N)

A

The standard unit of force in the SI

35
Q

Force meter

A

a scientific device used to measure force; also called a spring scale

36
Q

Gravitational force

A

The force exerted by gravity on an object; measured in Newtons (N); the preferred scientific term for the everyday term “weight”

37
Q

Weight

A

The force of gravity exerted on a mass

38
Q

Force diagram

A

A drawing that uses arrows to represent the direction and strength of one or more forces

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