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Tech Grade 8
Test Description: Tech
Instructions: Answer all questions to get your test result.
1) Define following terms in structural failures - Toppling over
A
when a structure is not stable enough to withstand forces from the side
B
No stay wires
C
base too small
D
all
2) Explain counter rotation
A
Turn in opposite directions
B
Any two gears that mesh
C
All
D
None
3) Define Cam
A
It is a mechanism that converts rotary motion
B
All
C
None
D
Into up and down motion
4) Define Crank
A
None
B
It is a mechanism that converts up and down motion
C
Into reciprocating rotary motion
D
All
5) List 2 examples of linked second class lever
A
All
B
Nutcracker
C
wheelbarrow
D
Bottle opener
6) Is it possible for a snail cam to turn in a clockwise direction. Explain your answer
A
No, the follower will jam against the flat side of the cam
B
Maybe
C
Yes
D
Neither
7) Name 2 properties of plastic
A
Waterproof
B
Light
C
All
D
Cheap
8) Name 2 plastic products and the impact on the environment
A
Plastic bottles and bags
B
kills animals
C
All
D
Looks ugly
9) Define Bio-degradeable
A
Kill the environment
B
The ability to burn down objects
C
The ability to break down objects down naturally into simple, harmless substances
D
neither
10) What is high grade recycling
A
No paper pulp is added
B
Nothing
C
Neither
D
New paper pulp is added
11) What is low grade recycling
A
Nothing added
B
No new paper pulp is added to the recycled paper pulp
C
Paper pulp added
D
Neither
12) What is the purpose graphics in technology
A
Innovation
B
Planning ideas
C
Development and communication of ideas
D
Neither
13) Define two dimensional drawing
A
None
B
Drawing only showing 2 views of an object
C
All
D
On a flat surface
14) Define Isometric drawing
A
All
B
shows 3 sides
C
place at 30 degress on a horizontal line
D
It is a 3 dimensional drawing
*select an answer for all questions
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