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WorksheetsPinewood Chapter 4 Physical Science
Total questions: 12
Worksheet time: 24mins
Name
Class
Date
1.
How do simple machines help to get work done?
a)
By making the people who use simple machines stronger
b)
by reducing the mass of objects when force is applied
c)
by allowing work to be done without using any force
d)
by reducing the amount of force needed to do work
2.
Which of these is an example of using a wheel and axle to do work?
a)
twisting a lid onto a jar
b)
turning a key to open a lock
c)
pedaling a bicycle down the street
d)
opening a curtain with a drawstring
3.
A farmer is removing stones from a field. He puts a strong stick under each stone and pushes the stone up. Which simple machine is he using?
a)
a wedge
b)
a lever
c)
a pulley
d)
a screw
4.
A factory loading dock has a ramp to make heavy objects easier to move. Which statement best describes how the ramp acts as a simple machine?
a)
It reduces the force needed to lift an object
b)
It shortens the distance an object will travel.
c)
It lowers the height an object must be lifted.
d)
It changes the direction of force on an object
5.
On career day at the hospital, Sharon learned that doctors sometimes use screws to help heal broken bones. How could a screw help heal a broken bone?
a)
by twisting the bone
b)
by holding the bone in place
c)
by making ridges in the bone
d)
by putting pressure on the bone
6.
Jonny uses a piece of wood to hold the door open while he brings some boxes to his house. Which simple machine is he using?
a)
a lever
b)
a screw
c)
a wedge
d)
an inclined plane
7.
How do simple machines help people do work?
a)
by allowing people to apply less force and by reducing gravity on an object
b)
by reducing the mass of the object and by changing the direction of the force
c)
by changing the direction of the force and by reducing the gravity on an object
d)
by allowing people to apply less force and by changing the direction of the force
8.
Maxwell is planning a bicycle route from his home to school. He is looking at how rough the surfaces of the bicycle path are. How will a surface with more friction affect his ride?
a)
It will increase the speed of his bicycle.
b)
It will make his bicycle harder to control.
c)
It will cause less wear on his bicycle's tires.
d)
It will require him to pedal his bicycle harder.
9.
Which of these simple machines changes the direction of the force needed to move an object up or down?
a)
an inclined plane
b)
a wedge
c)
a screw
d)
a pulley
10.
How can a spring scale help find the easiest way to do work on an object?
a)
by measuring how much force is needed using different machines
b)
by measuring how fast different machines can do the work
c)
by measuring the mass of objects that need to be lifted
d)
by adding extra force to help finish the work
11.
What kind of a simple machine is a pizza cutter?
a)
an inclined plane and a wedge
b)
a wedge and a wheel and axle
c)
an inclined plane and a lever
d)
a lever and a wheel and axle
12.
Kyra wants to compare the force needed to move a bag of dog food by lifting it or pulling it up a ramp. What tool should she use to make this comparison?
a)
ruler
b)
thermometer
c)
spring scale
d)
calculator
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