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WorksheetsFinal Exam Review
Total questions: 59
Worksheet time: 30mins
Name
Class
Date
1.
The change in momentum of an object is known as...
a)
impulse
b)
inertia
c)
torque
d)
elasticity
2.
______________ collisions conserve momentum.
a)
Elastic
b)
Inelastic
c)
Perfectly inelastic
d)
All of the above
3.
____________________ collisions conserve momentum and kinetic energy.
a)
Elastic
b)
Inelastic
c)
Perfectly Inelastic
d)
All of the above
4.
_________________________ collisions have objects that deform.
a)
Elastic
b)
Inelastic
c)
Perfectly inelastic
d)
All of the above
5.
________________________ collisions have objects that stick together.
a)
Elastic
b)
Inelastic
c)
Perfectly Inelastic
d)
All of the above
6.
________________ is defined as inertia in motion.
a)
momentum
b)
inertia
c)
torque
d)
elasticity
7.
The best unit for momentum is...
a)
kg
b)
m/s
c)
kg m/s
d)
kg m/s and direction
8.
_________________________ is the result of a force acting at a distance to cause a rotation.
a)
Torque
b)
inertia
c)
angular momentum
d)
lever arm
9.
A positive torque is in the ______________________ direction.
a)
clockwise
b)
counter-clockwise
c)
inward
d)
outward
10.
To maximize the torque produced, the force and the lever arm should be at an angle of ____.
a)
0 degrees
b)
30 degrees
c)
45 degrees
d)
90 degrees
11.
Electric charge is represented by
a)
k
b)
q
c)
r
d)
C
12.
The unit for electric charge is
a)
V
b)
A
c)
C
d)
Ω
13.
Most objects are _________________ charged because they have equal numbers of protons and electrons.
a)
positively
b)
negatively
c)
neutrally
d)
infinitely
14.
If an object has 2 more protons than electrons, its net charge will be...
a)
+2e
b)
+1e
c)
-1e
d)
-2e
15.
A positive and a negative charge will attempt to
a)
attract
b)
repel
c)
not interact
d)
esplode
16.
Two like charge will attempt to
a)
attract
b)
repel
c)
not ineract
d)
Michael Bay
17.
If the distance between two electric charges doubles, the electric force between them is multiplied by ____.
a)
2
b)
4
c)
1/2
d)
1/4
18.
____________________ is the amount of electric charge that passes a point in a given time.
a)
Voltage
b)
Current
c)
Resistance
d)
Power
19.
______________ is the "electric pressure" that causes electrical charges to move.
a)
Voltage
b)
Current
c)
Resistance
d)
Power
20.
_________________ is the opposition to the flow of electricla charges.
a)
Voltage
b)
Current
c)
Resistance
d)
Power
21.
The unit for current is
a)
V
b)
A
c)
C
d)
Ω
22.
The unit for voltage is
a)
V
b)
A
c)
C
d)
Ω
23.
The unit for resistance is
a)
V
b)
A
c)
C
d)
Ω
24.
If the length of a wire increases, its resistance will
a)
increase
b)
decrease
c)
remain constant
d)
double
25.
If the cross-sectional area of a wire increases, its resistance will
a)
increase
b)
decrease
c)
remain constant
d)
double
26.
In a series circuit, there is/are _____ path(s) for electricity to take.
a)
0
b)
1
c)
2
d)
3
27.
Old Christmas lights where if one bulb breaks, then all the bulbs turn off are an example of a(n) ________ circuit
a)
series
b)
parallel
c)
combination
d)
AC
28.
Which of the following relationships summarizes the voltages across the resistors in a parallel circuit?
a)
Vtotal = V1+V2+....
b)
Vtotal = V1=V2=....
c)
Vtotal = 1/V1+1/V2+...
d)
Vtotal = Itotal / Req
29.
__________________ is not a proper equation to calculate electric power.
a)
P=IV
b)
P=I2R
c)
P=V2/R
d)
P=V/R
30.
Which concept in electricity is most closely related to the brightness of a light bulb?
a)
charge
b)
electric force
c)
resistance
d)
electric power
31.
The equation to calculate the magnification of an image is M =
a)
di/do
b)
do/di
c)
-di/do
d)
-do/di
32.
If the image distance is greater than the object distance, the image is ____________________.
a)
upright
b)
inverted
c)
enlarged
d)
reduced
33.
The _________________ is the point at which the optical axis and mirror intersect.
a)
focal point
b)
center of curvature
c)
vertex
d)
focus
34.
_____________________ mirrors have positive focal lengths.
a)
Plane
b)
Convex
c)
Concave
d)
Spherical
35.
____________________ mirrors have negative focal lengths.
a)
Plane
b)
Convex
c)
Concave
d)
Spherical
36.
A(n) __________________ image is one where the reflected rays of light actually intersect at a point, and it could be projected on a screen.
a)
real
b)
virtual
c)
enlarged
d)
reduced
37.
_______________ is the symbol used to represent the height of the image.
a)
ho
b)
hi
c)
do
d)
di
38.
If the image produced is pointing the same direction as the object, the image is considered_______________.
a)
real
b)
virtual
c)
upright
d)
inverted
39.
___________________ mirrors can only produce virtual, upright, reduced images.
a)
Plane
b)
Convex
c)
Concave
d)
Spherical
40.
____________________ mirrors are used in convenience stores to try to prevent shoplifting.
a)
Plane
b)
convex
c)
concave
d)
spherical
41.
____________________ rays of light were represented in ray diagrams using dashed lines.
a)
Real
b)
Virtual
c)
Incident
d)
Reflected
42.
In our ray diagram for spherical mirrors, a ray of light left the object, traveled parallel to the optical axis, hit the mirror, and was reflected through or away from the ___________________
a)
focal point
b)
vertex
c)
object
d)
center of curvature
43.
In our ray diagrams for spherical mirrors, a ray of light left the object, hit the mirror at the _________, and was reflected downward below the principle axis at the same angle.
a)
vertex
b)
focus
c)
object
d)
center of curvature
44.
A magnification value that is greater than 1 means that the image is
a)
real
b)
virtual
c)
enlarged
d)
reduced
45.
A magnification value that is negative means that the image is
a)
upright
b)
inverted
c)
enlarged
d)
reduced
46.
A magnification value that is positive means that the image is
a)
real
b)
virtual
c)
enlarged
d)
reduced
47.
A _____________ mirror has a reflective surface on the inside of the sphere
a)
Plane
b)
Convex
c)
Concave
d)
Spherical
48.
The playground equipment that best demonstrates the concept of torque is a
a)
swing
b)
slide
c)
see-saw
d)
monkey bars
49.
_________________ energy is stored energy
a)
Kinetic
b)
Potential
c)
Nonmechanical
d)
Light
50.
When a ball is thrown vertically into the air, as the ball rises, ________________ energy is transformed into _______________ energy
a)
potential, kinetic
b)
nonmechanical, mechanical
c)
kinetic, potential
d)
potential, elastic
51.
A stretched rubber band demonstrates _______________ energy
a)
kinetic
b)
gravitational potential
c)
elastic potential
d)
heat
52.
Friction changes kinetic energy into
a)
gravitational and chemical
b)
heat and chemical
c)
sound and chemical
d)
heat and sound
53.
Which is not a unit for power?
a)
J/s
b)
Nm/s
c)
W
d)
Jm
54.
What is the unit for energy?
a)
N
b)
J
c)
W
d)
P
55.
Energy is measures in the same units as
a)
power
b)
force
c)
work
d)
none of the above
56.
Power is defined as
a)
work per unit of length
b)
force times unit of length
c)
work per unit of time
d)
force times unit of time
57.
An object with kinetic energy must be
a)
moving
b)
falling
c)
elevated
d)
at rest
58.
Which is not a law of conservation?
a)
energy
b)
momentum
c)
angular momentum
d)
torque
59.
Which is the unit for power?
a)
P
b)
J
c)
W
d)
N
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