Transcript Simple Machines Test Review - Fort Thomas Independent Schools

Simple Machines
Chapter 16 Review
Using force to
move an object
work
A bar that turns on a
fixed point
lever
Two inclined planes
placed back to back
wedge
A wheel with a rope
around it
pulley
A simple machine that
makes moving or lifting
things easier
Inclined plane
A simple machine that is
like a nail with threads
wrapped around it
screw
The fixed point on a
lever
fulcrum
A machine that
needs only one force
to make it work
Simple machine
What type of simple machine is a
screwdriver?
A. Inclined
plane
B. Lever
C. Pulley
D. Wheel-and-axle
D. Wheel-and-axle
Sally is making a poster to show
pictures of levers. Which object
should NOT be on her poster?
A.Nail
B. Rake
C.Broom
D.Crowbar
A. Nail
Which of these is not an
example of work?
A. Lifting
a book
B. Opening a door
C. Drawing with a marker
D. Adding numbers in your
head
D. Adding numbers in
your head
A screw is made of a post and
another kind of simple machine.
What is that other kind of simple
machine?
A.Inclined
plane
B. pulley
C.wedge
D.Wheel-and-axle
A. Inclined plane
How is the shovel being used in
this picture?
A. As
a wheel-and-axle
B. As a wedge
C. As an inclined plane
D. As a lever
D. As a lever
Charlie’s class is learning about simple machines. His teacher
has written the names of four simple machines in a table on the
board. As she points to each name, Charlie gives an example of
that machine. She writes down what he says. Which simple
machine is correctly paired with its example?
A.
B.
C.
D.
lever
wedge
inclined plane
pulley
B. Wedge
A jar lid has threads. These threads
help hold the lid tightly on the jar.
What simple machine is a jar lid?
A.lever
B. pulley
C.wedge
D.screw
D. Screw
Mr. H is telling his class about the human body. He describes how
some athletes lift weights to make their arms stronger. An athlete
holds a weight in her hand and bends her arm at the elbow. The
elbow acts as a fulcrum.
In this example, the arm is a simple machine. Which machine is it?
A.
B.
C.
D.
lever
pulley
screw
Wheel-and-axle
A. lever
Linus needs to keep a door
propped open. Predict which
simple machine Linus will choose
to do the job. Explain.
Linus will choose a wedge. He will
push the wedge between the door
and the floor. The wedge will keep
the door open.
Interpret the pictures to decide
which screw is easier to turn.
Explain.
Screw A is easier to turn because
it has threads that are closer
together.
The pictures show two simple
machines. Tell how the machines
are alike.
Both are simple machines that can
be used to raise an object.
Snoopy has made two ramps.
Ramp A is steeper than Ramp B.
Which ramp will make it easier for
Snoopy to move the block of
wood? Tell how you know.
Ramp B will be easier, because it is
less steep. This means Snoopy will
use less force to push the block of
wood up Ramp B than up Ramp A.