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WorksheetsEnergy and Simple Machines
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
A wheel is a modification of a(n)
a)
screw
b)
lever
c)
inclined plane
d)
wedge
2.
Which of the following is not an example of work?
a)
an ice hockey puck laying on an ice rink
b)
ship movement that causes ripples in the water
c)
a man pushing a heavy box across the floor
d)
a magnet repelling a compass needle
3.
Which of the following is not an inclined plane?
a)
wrench
b)
axe
c)
chisel
d)
ramp
4.
In a first-class lever, ...
a)
the effort is located between the fulcrum and the resistance
b)
the fulcrum is located at the end of the lever
c)
the resistance is located between the fulcrum and the effort
d)
the fulcrum is located between the effort and the resistance
5.
A device in the shape of two inclined planes placed bottom to bottom is called a(n) ...
a)
incline
b)
wedge
c)
wheel and axle
d)
block and tackle
6.
First- and second-class levers amplify effort or force. Third-class levers amplify ...
a)
friction
b)
distance
c)
pitch
d)
power
7.
A mechanical advantage of <1 indicates...
a)
you are unable to determine just by the number value
b)
you are at a disadvantage when you use the machine
c)
the whole system is in balance
d)
you are at an advantage when you use the machine
8.
"The total kinetic energies of all particles in an object" describes what kind of energy?
a)
radiant
b)
thermal
c)
electrical
d)
magnetic
9.
A mechanical advantage of 1 indicates ...
a)
you are at an advantage when using the machine
b)
you are unable to determine just by the number value
c)
you are at a disadvantage when using the mcahine
d)
the system is in balance
10.
Which has kinetic energy?
a)
a compressed spring
b)
a book on the bookshelf
c)
an avalanche
d)
a case of dynamite
11.
The simple machine that overcomes the limited distance that a resistance can be moved with a lever is the ...
a)
inclined plane
b)
screw
c)
wedge
d)
wheel and axle
12.
Which of the following would not be classified as a lever?
a)
wheelbarrow
b)
baseball
c)
crowbar
d)
tweezers
13.
The majority of the appendage-joint combinations in the human body ...
a)
are 2nd class levers
b)
are 1st class levers
c)
cannot be classified as a specific lever type
d)
are 3rd class levers
14.
Mechanical advantage is expressed ...
a)
in newtons squared
b)
in joules
c)
without any units
d)
in joules squared
15.
Machines in the "real world" cannot produce as much energy as they receive because of the presence of ...
a)
work
b)
levers
c)
friction
d)
power
16.
In a second-class lever, ...
a)
the effort is located between the fulcrum and the resistance
b)
the resistance is located between the fulcrum and the effort
c)
the fulcrum is located between the effort and the resistance
d)
the resistance is located at the end of the lever
17.
Inclined planes reduce the ______ to raise a load.
a)
distance
b)
effort
c)
resistance
d)
work
18.
The unit for power is the ...
a)
watt
b)
joule
c)
newton
d)
dyne
19.
Which of the following items represents a second-class lever?
a)
seesaw
b)
tweezers
c)
crowbar
d)
nutcracker
20.
The distance between adjacent threads on a machine bolt is called the ...
a)
fulcrum
b)
joule
c)
pitch
d)
watt
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