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Simple And Complex Machines
Test Description: Simple and complex machines
Instructions: Answer all questions to get your test result.
1) What is the main reason people use machines?
A
Machines do work so people do not have to.
B
There are many different kinds of machines.
C
Machines make work easier and faster
2) Which 2 things determine how much work it takes to do something?
A
weight and force
B
force and distance
C
distance and time
3) What are simple machines?
A
Machines with only a few parts
B
machines that make objects move quickly
C
machines with lots of parts
4) An ax and knife are examples of a
A
wedge
B
lever
C
pulley
5) What kind of simple machine is a wheel chair ramp?
A
screw
B
wedge
C
inclined plane
6) A _____________ is a device that uses energy to do work.
A
machine
B
force
C
load
7) In order to move something, you have to use
A
friction
B
force
C
work
8) How many simple machines are there?
A
5
B
10
C
7
9) When you move something up or down an inclined plane it takes
A
more energy
B
the same amount of energy
C
less energy
10) A wedge is 2 inclined planes that meet.
A
false
B
true
11) The wider the wedge, the easier it is to move things apart.
A
false
B
true
12) A screw is a ___________ wrapped around a metal rod.
A
wedge
B
lever
C
inclined plane
13) Screws hold things together.
A
false
B
true
14) The 2 parts to a lever are a board/bar and a
A
fulcrum
B
screw
C
wedge
15) An example of a lever is a seesaw.
A
true
B
false
16) Wheels increase the amount of friction between things.
A
false
B
true
17) The wheel turns a greater distance with more force.
A
true
B
false
18) The axle turns a lesser distance with more force.
A
true
B
false
19) A gear is a _______________ with teeth.
A
wheel
B
screw
C
axle
20) Gears transfer force from one place to another.
A
yes
B
no
*select an answer for all questions
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