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Grade 7 > Technology > Flashcards

Technology Flashcards

1
Q

What is technology?

A

The use of knowledge,skills,values and resources to meet people’s needs and wants.

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2
Q

What is a design brief?

A

A short statement that describes a need or problem.

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3
Q

What are design specifications?

A

Details about the product

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4
Q

What are evaluation criteria?

A

A set of questions about the design process and product.

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5
Q

What are the 5 stages in the design process?

A
  1. Investigate
  2. Design
  3. Make
  4. Evaluate
  5. Communicate
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6
Q

What is a mechanism?

A

A set of moving parts that are used to make work easier.

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7
Q

What is a lever?

A

A simple mechanism made of a bar that turns around a fixed point.

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8
Q

What is a fulcrum?

A

The point of movement or pivot on which the arm of a lever moves.

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9
Q

What is the effort?

A

A force exerted in a mechanism that enables it to work.

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10
Q

What is a load?

A

The object or mass that must be lifted cut or moved.

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11
Q

What is mechanical advantage?

A

When machines or mechanisms enable us to move large loads with a small effort or force.

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12
Q

How do we determine mechanical advantage?

A

The closer the fulcrum is to the load, the bigger the mechanical advantage is.

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13
Q

What are forces measured in (effort and load)?

A

Newtons

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14
Q

Where is the fulcrum situated in a first class lever?

A

In the middle

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15
Q

What is situated in the middle in a second class lever?

A

load

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16
Q

What is situated in the middle in a third class lever?

A

effort

17
Q

What is a linkage?

A

2 or more levers that are joined

18
Q

What is a pneumatic system?

A

A mechanical system that uses compressed air to give us a mechanical advantage.

19
Q

What is a hydraulic system?

A

A mechanical system that uses liquids under pressure to to give us a mechanical advantage.

20
Q

What is a structure?

A

Something that has been built, made or put together in a particular way to support a load.

21
Q

What are the purposes of structures?

A
  1. To contain something
  2. To span a distance
  3. To protect/shelter something
  4. To support a load
22
Q

What are the 3 types of structures?

A
  1. Shell structure
  2. Frame structure
  3. Solid structure
23
Q

What is triangulation?

A

arranging members in triangular shapes to to make frame structures stronger.

24
Q

What is a tie beam?

A

horizontal beam /crosspiece in a frame structure that supports the other members by holding or pulling the sections together.

25
Q

What is tension force?

A

A type of force that strengthens a member.

26
Q

What is a strut?

A

a diagonal rod/bar in a frame structure that keeps other members in position by pushing against them.

27
Q

What is compression force?

A

A type of force that squashes a member.

28
Q

What is a member?

A

The name given to one of the parts that are joined together in a frame structure.

Grade 7 (3 decks)

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