WorksheetsElectromagnetism
Total questions: 27
Worksheet time: 14mins
Name
Class
Date
1.
A student pushes a cart against a wall exerting 500 N of force. The cart doesn't move. a. How do you explain what happened? (Mark the one best answer.)
a)
A The wall pushes back with 1,000 N of force.
b)
B The wall pushes back with 250 N of force.
c)
C The wall pushes back with 500 N of force.
d)
D Walls are stationary; they can't push or pull.
2.
What can you say about the forces?
a)
F The net force is 0 because the cart is not moving.
b)
G The net force is greater than 0 because the wall could push back more.
c)
H There is no net force because a wall can’t push or pull.
d)
J The net force is less than 0 because the person is pushing on the wall.
3.
. Team A pulls on a rope in a game of tug-of-war with 1,800 N of force. Team B pulls on the other side of the rope. In between the teams is a mud pit. How much force does Team B need to use in order to pull Team A into the mud?
(a)
4.
Three young children are fighting over where to take Super Dog. Child X pulls the wagon, trying to go in the direction of his house. Child Y pushes on the wagon toward the same house. Child Z pushes on the wagon, trying to move it in the opposite direction. The forces from the three children being exerted on the wagon are 300 N, 500 N, and 200 N (not necessarily in XYZ order). If the wagon isn’t moving, how much force is Child Z exerting on the wagon? (Mark the one best answer.)
a)
A There is not enough information to determine Child Z’s force.
b)
B 200 N
c)
C 300 N
d)
D 500 N
5.
In order to move a carton of books across table A, a student had to push with 15 N of force. In order to move a carton of books with the same mass across table B, the student had to push with 25 N of force. Which table has a smoother surface?
a)
Table A
b)
Table B
6.
Aristotle had ideas developed from thought experiments about force that people believed for more than 2,000 years. In the 1600s, Galileo conducted investigations with objects and presented new ideas about force. Which great thinker had better evidence to support his claims? (Mark the one best answer.)
a)
❍ A Aristotle, because he was the rst to describe the motion of objects
b)
❍ B Aristotle, because he used thought experiments to support his ideas
c)
❍ C Galileo, because he used ball-and-ramp experiments to support his ideas
d)
❍ D Galileo, because he was a scientist rather than a philosopher
7.
A baby rhino runs playfully at his mother and bumps into her. The baby falls backward from the impact.
a)
Newton's first law of motion
b)
Newton's second law of motion
c)
Newton's third law of motion
8.
A fish swimming through water pushes water backwards with its fins. The water propels the fish forward.
a)
Newton's first law of motion
b)
Newton's second law of motion
c)
Newton's third law of motion
9.
The following measurement describes this type of motion: 951 N
a)
acceleration
b)
force
c)
speed
10.
Mass varies depending on where the object is located. _______________
a)
True
b)
False
11.
When a bug hits a windshield of a car, the force of the car on the bug equals the force of the bug on the car. _______________
a)
True
b)
False
12.
A force has both speed and mass. _______________
a)
True
b)
False
13.
Balanced forces acting on an object cause the object to accelerate. _______________
a)
True
b)
False
14.
A test booklet is sitting at rest on a desk. Compared to the force of the booklet on the desk, the force of the desk on the books is the same. _______________
a)
True
b)
False
15.
Lizzie is pushing Alex on a scooter. Lizzie is pushing with 75 N of force to the left and Alex is helping with 20 N to the left. What is the net force on the scooter?
a)
95 N, to the right
b)
55 N, to the right
c)
95 N, to the left
d)
55 N, to the left
16.
Travis is pushing his sister Claire on a swing. Travis is pushing with 35 N to the right. Claire pushes back with 42 N to the left. What is the net force and in what direction?
a)
7 N, to the right
b)
77 N, to the right
c)
7 N, to the left
d)
77 N, to the left
17.
A snowball is thrown into a tree. The snowball hits the branch moving right with a force of 25 N. The tree resists the hit with a force of 15 N to the left. Which direction is the resulting force?
a)
to the right
b)
not moving
c)
to the left
d)
moving up
18.
The unit for force is _____.
a)
kilograms
b)
newtons
c)
seconds
d)
joules
19.
According to Newton’s third law of motion, when a hammer strikes and exerts a force on a nail, the nail _____.
a)
creates a balanced force
b)
does not move
c)
moves as a constant speed
d)
exerts an equal and opposite force back on the hammer
20.
Which of the following is affected by gravity?
a)
distance
b)
weight
c)
mass
d)
speed
21.
Friction acts in a direction _____ the applied force.
a)
opposite to
b)
away from
c)
the same as
d)
straight up from
22.
A(n) ____________________ is a push or pull that one object exerts on another.
a)
inertia
b)
stability
c)
force
d)
speed
23.
Friction always acts in a direction ____________________ to the direction of motion.
a)
opposite
b)
perpendicular
24.
Which of the following would increase the strength of an electromagnet? (1 point)
a)
Increase the current (increase number of wire loops)
b)
Use wire with more efficient conductivity
c)
Adding more turns to the coil
d)
All of above
25.
Which would likely repel each other? (1 point)
a)
A. + and +
b)
B. - and -
c)
C. + and -
d)
A & B
e)
A & C
26.
Oreo wants to make a magnet "train". Which of the options shows how Oreo can arrange the magnets so that they will all stay connected? (1 point)
a)
S-S-S
b)
N-N-S
c)
N-S-N
27.
What is an example of real-world electromagnet/s? (1 point)
a)
Speakers use electromagnets to make sound.
b)
Doorbells have an internal electromagnet that creates the sound.
c)
Microphones use electromagnetic induction to change the sound.
d)
All of the above
100 %
