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1
Energy and Machines Jeopardy
Choose a category. You will be given the
answer. You must give the correct question.
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2
Energy
Energy Transfer
Compound Machines
Mechanical Advantage
Efficiency
Simple Machines
10 Points
10 Points
10 Points
10 Points
10 Points
10 Points
20 Points
20 Points
20 Points
20 Points
20 Points
20 Points
30 Points
30 Points
30 Points
30 Points
30 Points
30 Points
40 Points
40 Points
40 Points
40 Points
40 Points
40 Points
50 Points
50 Points
50 Points
50 Points
50 Points
50 Points
3
Energy is not exchanged with the environment in
this type of system.
4
What is a closed system?
Final
5
In an ideal system, when this type of energy
decreases kinetic energy increases.
6
What is potential energy?
Final
7
Doing this on a system will change its total
energy.
8
What is external work?
Final
9
This type of energy depends on mass and velocity.
10
What is kinetic energy?
Final
11
This type of energy depends on an objects
position.
12
What is potential energy?
Final
13
At the highest point on a roller coaster this
type of energy is at a maximum.
14
What is potential energy?
Final
15
A roller coaster is moving fastest at this point.
16
What is the lowest point?
Final
17
In a ideal roller coaster this type of energy is
constant.
18
What is total energy?
Final
19
If the potential energy is equal at two points on
an ideal roller coaster then this type of energy
must also be equal.
20
What is kinetic energy?
Final
21
In an ideal roller coaster this force does work
on the car.
22
What is the force of gravity?
Final
23
A simple machine does not change this.
24
What is work?
Final
25
A simple machine can be used to change the
magnitude or direction of this.
26
What is force or displacement?
Final
27
These are the two families of simple machines.
28
What are inclined planes and levers?
Final
29
A seesaw is an example of this kind of lever.
30
What is a first class lever?
Final
31
This type of lever lets a small input motion
produce a large output motion.
32
What is a third class lever?
Final
33
This type of pulley arrangement only changes the
direction of the force.
34
What is a single fixed pulley?
Final
35
This is made up of two or more simple machines.
36
What is a compound machine?
Final
37
These are parts of a scissors.
38
What are levers and wedges?
Final
39
A screw and a wheel and axle make up this common
device.
40
What is a corkscrew?
Final
41
This common compound machine is made up of a
wheel and a lever.
42
What is a wheel barrow?
Final
43
To find the overall mechanical advantage of a
compound machine you would do this.
44
What is multiply?
Final
45
This is the ratio of the output force to the
input force of a machine.
46
What is mechanical advantage?
Final
47
In this type of simple machine the mechanical
advange is less than one.
48
What is a class three lever?
Final
49
Calculating mechanical advantage assumes you have
this kind of machine.
50
What is an ideal machine?
Final
51
If a ramp has a mechanical advantage of 3, this
is how much force I have to use.
52
What is 1/3?
Final
53
This is the maximum value of efficiency.
54
What is 1 or 100?
Final
55
This is the law that explains why efficiency has
a maximum.
56
What is the law of conservation of energy?
Final
57
If a machine has an efficiency of 50 this is the
amount of useful work output I can expect from
it.
58
What is half the input work?
Final
59
This is the efficiency of an ideal machine.
60
What is 100?
Final
61
This is the efficiency of a machine that produces
87 J of useful work for 100 J of input work in 10
s.
62
What is 87 efficiency?
Final
63
Final Jeopardy
Make your wager
64
This is the fraction of the maximum height of a
roller coaster at a point where its velocity is
1/2 of its maximum.
65
What is 1/4 the maximum height?