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Worksheets2nd Semester Final - Review (Day 2)
Total questions: 75
Worksheet time: 2hrs 42mins
Name
Class
Date
1.
High energy waves have a ____.
a)
high frequency
b)
low frequency
c)
small amplitude
d)
big wavelength
2.
what type of wave is it?
a)
Compressional Wave
b)
Transverse Wave
c)
longitudinal wave
d)
longitudinal and compressional waves
3.
Which letter represents wavelength?
a)
A
b)
B
c)
C
d)
D
4.
One end of the rope is vibrated to produce a wave with a wavelength of .25 m. The Frequency of the wave is 3.0 Hz. What is the speed of the wave?
a)
3.00 m/s
b)
2.50 m/s
c)
.75 m/s
d)
1.25 m/s
5.
A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
a)
500 m/s
b)
50 m/s
c)
5 m/s
d)
0.5 m/s
6.
A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave?
a)
25 m
b)
125 m
c)
5 m
d)
25 m/s
7.
A wave has wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave?
a)
34 m/s
b)
3400 Hz
c)
3400 m/s
d)
34 Hz
8.
What kind of wave is pictured?
a)
Transverse
b)
Longitudinal
c)
surface
d)
none of the above
9.
The number of waves that pass a given point per second is called what?
a)
frequency
b)
wavelength
c)
longitudinal
d)
transverse wave
10.
The "stuff" that waves pass through
a)
sound
b)
light
c)
medium
d)
potato chips
11.
Which of the following has the greatest momentum?
a)
a scurrying cockroach
b)
a parked semi-truck
c)
more information is needed
12.
Most modern vehicles have padded dashboards. This reduces collision injuries by...
a)
reducing the driver's change in momentum
b)
increasing the driver's change in momentum
c)
increasing the force of impact
d)
increasing the time of impact
13.
The recoil speed of a rifle is much less than the exit velocity of a bullet because...
a)
the rifle experiences a smaller force
b)
the rifle experiences a smaller change in momentum
c)
the rifle has a much greater mass
d)
the rifle does not obey the laws of physics
14.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball.
a)
55 kg*m/s
b)
100 kg*m/s
c)
250 kg*m/s
d)
500 kg*m/s
15.
Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...
a)
Skater 1 experiences a greater change in momentum
b)
Skater 2 experiences a greater change in momentum
c)
Skater 1 has a greater velocity than Skater 2
d)
Skater 1 experiences a greater force
16.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
17.
Determine the momentum of 1000-kg car moving southward at 20 m/s.........
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s south
d)
10000 kg * m/s south
18.
What are the units of momentum?
a)
N
b)
kg m/s N
c)
m/s
d)
kg m/s
19.
What could you do to improve your egg safety device design?
a)
Reduce the impact time
b)
Extend the impact time
c)
Increase the amount of force the device hits the ground with
d)
Absolutely nothing. The egg was predestined to crash.
20.
A Falling Object has what kind of energy?
a)
Kinetic Energy
b)
Potential Energy
c)
Kinetic Energy and Potential Energy
d)
Neither
21.
If a girl has a mass of 20 kg, and is at a height of 30 m. What is her potential energy?
a)
-490 J
b)
-5880 J
c)
-643 J
d)
-19 J
22.
The Potential Energy of a 20-kg mass at a height of 2 meters
a)
392 J
b)
390 J
c)
400 J
d)
410 J
23.
What is potential energy measured in?
a)
N
b)
J
c)
kg m
d)
N sec
24.
What are the units of Force?
a)
kg m/sec
b)
kg m
c)
N
d)
N sec
25.
which point has the most potential energy
a)
G
b)
f
c)
b
d)
a
26.
Which 2 letters have the most kinetic energy
a)
W & Y
b)
X & Z
27.
How much pontential energy is at the top of a hill on a rollar coaster ride
a)
100%
b)
50%
c)
0%
d)
20%
28.
Can energy be destroyed
a)
no
b)
yes
29.
True or False: Conductors allow electrons to pass through easily.
a)
True
b)
False
30.
Is an eraser a conductor, insulator, or both?
a)
Conductor
b)
Insulator
c)
Both
31.
Is a paperclip a conductor, insulator, or both?
a)
Conductor
b)
Insulator
32.
Is a pair of scissors a conductor, insulator, or both?
a)
Conductor
b)
Insulator
c)
Both
33.
Current is measured in what unit?
a)
ohms
b)
volts
c)
watts
d)
amps
34.
The flow/movement of electric charges
a)
Voltage
b)
Resistance
c)
Current
d)
Circuit
35.
What does the arrows in the circuit represents?
a)
conventional current
b)
eletromotive force
c)
electron flow
d)
voltage
36.
What is the difference between a conductor and an insulator?
a)
An insulator allows electricity to flow through it easily and a conductor does not
b)
A conductor allows electricity to flow through it easily and an insulator does not.
c)
An insulator is magnetic and a conductor is not
d)
A conductor is magnetic and an insulator is not
37.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
38.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
39.
What is the continuous movement of electrons called?
a)
static electricity
b)
current electricity
c)
friction
d)
power
40.
Electrical charge built up on the surface of an object is called _________________.
a)
static electricity
b)
current electricity
c)
lightning
d)
electrons
41.
What are the charged parts of an atom?
a)
proton and neutron
b)
proton and electron
c)
neutron and electron
d)
proton, neutron, and electron
42.
Electricity stored in a battery is a type of ____energy.
a)
Kinetic
b)
Potential
43.
During a lab a balloon was rubbed with a wooly fabric. This is an example of which type of charging?
a)
conduction
b)
friction
c)
induction
44.
Which of the following is NOT a situation caused by static electricity?
a)
hair stands on end when touching a static electricity generator
b)
you get a electric shock when touching a doorknob during dry winter
c)
your hair stands on end when you are frightened
d)
clothes in the dryer cling to one another when no fabric softener is used
45.
The difference between attract and repel is that to attract is to pull something closer and repel is to push something away.
a)
True
b)
False
46.
Where do electrons go when you rub a balloon on your hair?
a)
Onto the balloon
b)
Into your hair
c)
They don't go anywhere (they remain stationary)
d)
Into the air
47.
What is the unit for voltage?
a)
volts
b)
amperes (amps)
c)
ohms
d)
watts
48.
What is the unit for resistance?
a)
volts
b)
amperes (amps)
c)
ohms
d)
watts
49.
Bits of paper are attracted to the surface of this balloon. What attracts the paper pieces to the balloon?
a)
Friction
b)
Static Electricity
c)
Magnetism
d)
Potential Energy
50.
Which light will be brighter and why?
a)
Bulb A because its circuit is closed
b)
Bulb B because it has more resistance
c)
Bulb B because it has more voltage
d)
Bulb A because it has less voltage
51.
Materials that cut down or resist the flow of charges are called?
a)
conductors
b)
insulators
c)
resistors
d)
circuts
52.
Pick the correct sentence.
a)
This circuit will work because it is a closed circuit.
b)
Energy will freely flow in this circuit.
c)
This circuit will not work because there is no energy source.
d)
This circuit will not work because there is no switch.
53.
Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?
a)
The balloons will repel each other.
b)
The balloons will attract each other.
c)
The balloons will become positively (+) charged.
d)
The balloons will pop.
54.
What types of charges attract?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Positive and Negative
55.
How do electrons differ from protons?
a)
They are the same thing
b)
Electrons hold a negative charge and protons hold a positive charge.
c)
Electrons are positively charged and protons are negatively charged.
d)
Protons are neutral
56.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
57.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
58.
Current times Resistance equals
(I X R)
(I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
59.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
60.
If the Voltage stays the same and Resistance is increased, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
61.
What are three good electrical conductors?
a)
Copper, Gold, Rubber
b)
Gold, Silver, Wood
c)
Gold, Silver, Copper
d)
Copper, Aluminum, Paper
62.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
63.
What resistance is needed to cause a 20A current flow because of a 100V battery?
a)
0.2Ώ
b)
2000Ώ
c)
120Ώ
d)
5Ώ
64.
A 20-volt relay has a coil resistance of 200 ohms. How much current does it draw?
a)
400 amps
b)
100 amps
c)
.1 amps
d)
.5 amps
65.
What happens to the force between two charged objects when you double the distance between them?
a)
2X
b)
1/2X
c)
4X
d)
1/4X
66.
What happens to the force between two charged objects if you reduce the distance between two objects from 30 cm to 10 cm?
a)
1/3X
b)
20X
c)
3X
d)
9X
67.
What variable do "Newtons" represent?
a)
Electrostatic Charge
b)
Force
c)
Distance
d)
Mass
68.
Find the magnitude of the force between two charges of 1.0 C each which are 1.0 meter apart?
a)
9E-9 N
b)
9E9 N
c)
1.1E10 N
d)
1.1E-10 N
69.
If each of the charges doubles, what happens to the force?
a)
Quadruples
b)
Doubles
c)
Stays the same
d)
Reduced by half
70.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
71.
The Law of Conservation of Charge states that:
a)
all atoms have more protons than electrons.
b)
only protons can be rubbed off of an atom.
c)
charge cannot be created or destroyed.
d)
charge cannot be transferred.
72.
If two charges repel each other, the two charges must be
a)
negative and negative.
b)
positive and negative.
c)
positive and neutral.
73.
Calculate the force exerted between two charged objects separated by a distance of 0.6 m. One object has a charge of -5 C and the other has a charge of +2.0 C.
a)
-1.5E-11 N
b)
2.5E-11 N
c)
-2.5E11 N
d)
-7.5E-10 N
74.
What equation is this:
FE= (k*q1*q2) / r2
FE= (k*q1*q2) / r2
a)
Coulombs law
b)
Ohms law
c)
Newtons law
75.
A balloon is rubbed against a student’s hair and then touched to a wall. The balloon “sticks” to the wall due to
a)
electrostatic forces between the particles of the balloon
b)
magnetic forces between the particles of the wall
c)
electrostatic forces between the particles of the balloon and the particles of the wall
d)
magnetic forces between the particles of the balloon and the particles of the wall
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