WorksheetsRube Goldberg Machines
Total questions: 25
Worksheet time: 1hrs 2mins
Name
Class
Date
1.
Kinetic energy is
a)
Energy of moving objects
b)
Energy stored in an object
c)
Energy within plants
d)
Energy from heat
2.
How can an incline plane reduce the amount of force required to lift an object?
a)
increase the length of the ramp
b)
increase the height of the ramp
c)
decrease the length of the ramp
3.
This device is a
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
4.
How much work is done if I use 5 Newtons to move an object 2 meters?
a)
10 Newtons
b)
10 meters
c)
10 Joules
d)
7 Joules
5.
How much work is done if I use 10 Newtons to move an object 3 meters?
a)
30 Newtons
b)
13 meters
c)
30 Joules
d)
30 meters
6.
A simple machine is a device that helps to reduce the amount of _____ required to do work.
a)
force
b)
energy
c)
work
7.
____ is done when a force is applied over a distance.
a)
energy
b)
work
c)
force
8.
The efficiency of a machine can be increased by reducing __________________________.
a)
effort
b)
force
c)
fulcrum
d)
friction
9.
In which of these cases is work being done?
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student picks up and carries his chair into another room
d)
A student sits on the carpet
10.
The unit used to measure work is the
a)
Watt
b)
Newton
c)
Joule
d)
Meter
11.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
12.
What type of inclined plane has the greater mechanical advantage?
a)
Higher.
b)
Flatter.
c)
Oiled.
d)
Sticky.
13.
How much work is produced when 350 N is used to move a car 5 m?
a)
70 J
b)
1750 J
c)
355 J
d)
175 J
14.
A device that makes doing work easier.
a)
complicated machine
b)
wedge
c)
simple machine
d)
pulley
15.
What is effort (input) force?
a)
the force required by a machine in order to accomplish work (the force you put on the machine)
b)
the force which an effort force must overcome in order to do work on an object via a simple machine.
c)
the force the machine exerts on a object
d)
the output work times the input distance
16.
No machine in existence has 100% efficiency due to ____________________.
a)
magic
b)
friction
c)
smoke
d)
input
17.
A fulcrum is _____________________.
a)
An endangered bird
b)
support for an inclined plane
c)
place where a lever is supported
d)
dressing for salad
18.
Which of the following is a second class lever?
a)
wheelbarrow
b)
see saw
c)
pliers
d)
fishing pole
19.
What is the force applied to the machine called?
a)
work force
b)
effort force
c)
resistance force
d)
distance force
20.
What term indicates the number of times a machine multiplies the effort (input) force?
a)
mechanical advantage
b)
work
c)
power
d)
effort
21.
The amount of power produced or used depends on which of the following?
a)
work and time
b)
force and distance
c)
work and force
d)
time and distance
22.
Which of the following does a simple machine do?
a)
allows the users to apply less force over a longer distance
b)
reduce the amount of force needed to do work
c)
Both of the above
23.
If an object is too heavy to move up a ramp, what is the best way to fix the problem?
a)
Increase the slope of the ramp
b)
Increase the elevation of the ramp
c)
Increase the length of the ramp
d)
Increase the friction of the ramp
24.
Calculate the amount of work done if you use a 100N force to push a 50 kg box 5 m across the kitchen floor.
a)
250 J
b)
500 J
c)
5000 J
d)
50,000 J
25.
Mechanical advantage is a measure of how much a machine multiplies the input
a)
efficiency.
b)
force.
c)
power.
d)
work.
100 %
