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Science 7 > Short Answer 10 > Flashcards

Short Answer 10 Flashcards

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1
Q

What are examples of human made structures

A

Some examples are; Bridges, roads, tunnels

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2
Q

What are some examples of nature made structures

A

Some examples are; Mountains, trees, coral reef, bird nests

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3
Q

What is an applied force

A

An applied force is an applied push or pull

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4
Q

What is a non-applied force

A

A non-applied force is a non applied push or pull

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5
Q

What are the most common directions for arrows

A

Up, down, left, right

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6
Q

What unit(s) do we use to measure mass?

A

We use most commonly grams (g) or kilograms (kg)

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7
Q

What unit(s) do we use to measure weight?

A

We use Newtons (N)

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8
Q

What are the similarities and differences between mass and weight

A

Similarities: They both used to describe the amount of matter in a object

Different (Mass): Mass is measured in Grams or Kilograms

The mass of an object is constant

Different (Weight): Weight is measured in Newtons or Pounds

weight can change depending on the location

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9
Q

Definition of Mass & Weight

A

Mass: The quantity of matter in an object

Weight: The force of gravity acting downward on an object

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10
Q

What are the properties (definitions) between mass & weight

A

They both describe a objects relationship to gravity

Mass measures the amount of quantity in a object

Weight is a measure of the force of gravity acting downward on a object

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11
Q

What devices used to measure the units of measurement

A

Mass: Scale (g) (kg)

Weight: A spring scale or a force meter (N)

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12
Q

Identify live load, dead load, and dynamic load of object

A

Live load: Live load refers to the weight/people/objects that are not permanently attached on the structure

Dead load: Dead load Refers to the weight of the structure or object it’s self and any permanently attached components

Dynamic load: A dynamic load is any load on a structure that is not caused by gravity (Ex: Wind, motion of a vehicle)

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13
Q

What does the thickness of a arrow indicate?

A

The thickness of a arrow indicates the magnitude, or strength, of the force

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14
Q

What does the direction of the arrow point show?

A

The arrow point shows the direction of the force

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15
Q

Convert: _kg=__N

A

1kg=10N

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16
Q
  • What does every force have?
A

Every force has direction and magnitude/strength

17
Q

*Why does change in WEIGHT occur?

A

it occurs because the moon has a smaller force of gravity than the earth

18
Q

*What are some forces that push or pull things without contact?

A

Gravity, magnetic force (the force that pulls two magnets together), electrostatic force (the force that causes static cling)

19
Q

*Does gravity always act the same? Why or why not

A

Gravity acts differently on objects with different masses

20
Q

*What does a bridge designer have to consider?

A

A bridge designer has to consider the loads that the structures will experience before they can decide which forms to use

21
Q

*What must a stable structure be able to do?

A

A stable structure should be able to withstand different loads

22
Q

In most cases, how can a force be applied?

A

A force can be applied by a push or a pull

23
Q

*When is gravity noticeable?

A

Gravity is noticeable when at least one of the objects has a large mass; it is a non-contact force

24
Q

Describe what type of arrow this is ➡️🧩⬅️

A

Push/Compression

25
Q

Describe what type of arrow this is ⬅️🧩➡️

A

Pull/Tension

26
Q

Describe what type of arrow this is ⬇️⬆️
🧩🧩
⬆️⬇️

A

Shear

27
Q

Describe what type of arrow this is ↪️
🧩
↩️

A

Torsion

28
Q

*What does shells provide?

A

Shells provides high strength and rigidity

29
Q

What does Frame support?

A

Frame supports loads

30
Q

*What type of load is a live load?

A

A live load is a static load

31
Q

*What type of load is a dead load?

A

A dead load is a static load

32
Q

*Is Torsion a Internal or External force?

A

Torsion is a Internal force

33
Q

*Is Tension a Internal or External force?

A

Tension is a Internal Force

34
Q

*Is Compression a Internal or External force?

A

Compression is a internal force

Science 7 (2 decks)

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