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WorksheetsForce, Motion, and Simple Machines (Gr 3 Sci)
Total questions: 19
Worksheet time: 21mins
If someone is using a wheelchair, what other simple machine can help the person be independent?
screw
wedge
pulley
inclined plane
What kind of inclined plane holds things together?
ramp
wedge
screw
pulley
Which simple machine helps you raise or lower blinds on a window?
screw
wedge
wheel and axle
pulley
Which of the following is an example of a lever?
a hammer when the back of it is used to remove a nail
a pulley because it makes lifting a heavy object easier
a screw because it can be used to hold things in place
a wheelchair ramp because it sits at a diagonal line
When using a lever, when will take less force to lift the object?
When the load is over the fulcrum.
When the load is 1 foot from the fulcrum.
When the load is 3 feet from the fulcrum.
When the load is 6 feet from the fulcrum.
There are many types of screws. Which screw requires the least amount of input force?
Which complex machine could be made by combining a wheel and axle and a lever?
a wheelbarrow
an axe
a shovel
scissors
If a wedge is narrow, ...
it might break.
it has to have a long handle.
it must travel a longer distance.
it is not as strong if it is narrow.
What type of work would a pulley help a person do?
cut food
make a seesaw
lift a car engine
hold pieces of wood together
A door knob is what type of simple machine?
wedge
pulley
inclined plane
wheel and axle
What two simple machines make up the scissors?
wheel and axle
lever and wedge
wedge and inclined plane
inclined plane and lever
If I push a box with 5 Newton force and my friend helps by pushing with 3 Newton force. What is the total force of their pushing?
5.3 Newtons
5 Newtons
8 Newtons
15 Newtons
If Jim pushes with a force of 5 Newtons and Sam pushes the opposite way with 2 Newtons, which way will the box move?
The box moves towards Sam with five newtons force.
The box moves towards Jim with three newtons of force.
The box moves towards Sam with three newtons of force.
The box does not move.
Andrea plays soccer. She dribbles the ball using short, soft kicks. Each kick moves the ball a small distance. How does her kick change when she wants the ball to go a long distance quickly?
She kicks with more force.
She kicks with less force.
She kicks with the same force.
She uses a lot of short kicks.
The class is playing tug of war at recess. There are 10 students on either side of the rope. What would explain that no one has moved?
One team has more force than the other.
One team has half the force as the other.
The teams have equal and opposite forces.
The teams have unequal and opposite forces.
A force is a push or pull, and force is measured in newtons (N). Alex threw a baseball with a force of 10 N. Then he threw the baseball with a force of 15 N. Given this information, what is true?
A baseball traveled a total of 25 N.
The baseball traveled farther on the first throw.
The baseball traveled farther on the second throw.
The baseball traveled about the same distance on each throw.
Given two similar objects with different masses traveling at the same speed and for the same distance, which statement below is true?
A force required to move both objects would also be the same.
More force would be required to move the object with more mass.
The object with less mass would require more force to be moved.
Neither object would require the use of force to be moved.
Two students are trying to move a heavy desk. One student is pushing the desk to the right. The other student is pushing the desk to the left. The desk does not move.
How do the forces the two students are putting on the desk compare?
Explain your answer.
How much work did each student do?
How do you know?
If the students want the desk to move to the left, how should they change the forces they are putting on the desk?
A person is pulling a wagon north. A second person begins pulling on the wagon.
In which direction should the second person pull to make the wagon move more quickly?
Explain your answer.
