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