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Intro To Forces
Test Description: Introduction to Forces and Simple Machines
Instructions: Answer all questions to get your test result.
1) Which of the following makes work easier?
A
friction
B
air resistance
C
gravity
D
machines
2) What is the force that pulls objects to the earth?
A
gravity
B
friction
C
motion
D
air pressure
3) What are the two parts of a lever?
A
bar and fulcrum
B
pin and needle
C
wheel and axle
D
block and tackle
4) What is the load?
A
the force used to make a simple machine work
B
the weight of an object being moved
C
the force pulling objects to earth
D
the force resisting the movement of objects against each other
5) What is the force applied to make a simple machine do work?
A
effort
B
load
C
fulcrum
D
pulley
6) Which simple machine has a grooved wheel and a rope?
A
wheel and axle
B
lever
C
pulley
D
screw
7) Which of the following is a screw?
A
light bulb
B
all of the answers are right
C
spiral staircase
D
mountain road
8) Which simple machine would you use to help load a box into a truck?
A
inclined plane
B
lever
C
screw
D
wedge
9) If the mass of an object increases, the force must do what to move it?
A
decrease
B
stay the same
C
it doesn't matter as long as there is some kind of force
D
increase
10) A block and tackle allows you to use what kind of force when lifting an object?
A
more
B
less
C
equal amounts
D
the same
11) Wedges are used to do what?
A
pry things open
B
roll things along
C
force objects apart
D
lift heavy objects
12) What makes up a wedge?
A
three or four screws
B
two or more inclined planes
C
two wheels and axles
D
two or more levers
13) The amount of work you do depends on how much of what you use to move an object?
A
force
B
time
C
air
D
load
14) What simple machine rotates or turns on a point (fulcrum)?
A
pulley
B
wheel and axle
C
wedge
D
lever
15) What is the thread on a screw?
A
a lever
B
an inclined plane
C
a wedge
D
a pulley
16) A ramp, or a hilly, sloped surface is also known as
A
a pulley
B
an inclined plane
C
a screw
D
a wheel and axle
17) The amount of effort on a lever depends on the locations of the what between the effort and fulcrum?
A
distance
B
weight
C
force
D
load
18) Which of the following is a pulley?
A
knife
B
scissors
C
car
D
flagpole
19) What two forces pull a ball down to the earth?
A
friction and gravity
B
gravity and motion
C
air and wind
D
power and fire
20) What simple machine is a door knob?
A
wheel and axle
B
inclined plane
C
lever
D
pulley
*select an answer for all questions
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