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Physics (2nd Semester) Final Exam Unit Practice

Total questions: 141

Worksheet time: 4hrs 56mins

Name
Class
Date
1.

When light bounces off an object- If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface.

a)

reflection

b)

refraction

c)

diffusion

2.

Objects that allow ALL light to pass through

a)

transparent

b)

translucent

c)

opaque

3.

What type of wave is a light wave?

a)

A sound wave

b)

A seismic wave

c)

A electromagnetic wave

d)

A mechanical wave

4.
The light we can see. 
a)
visible
b)
gamma
c)
ultraviolet
5.
Makes you get sunburn. 
a)
x-ray
b)
visible
c)
ultraviolet
6.
The rate at which a radioactive element decays is its ____.
a)
quarter life
b)
whole life
c)
wonderful life 
d)
half life
7.
The process by which nuclei having small masses are united to form a single larger nucleus is called nuclear ____.
a)
fusion
b)
fission
c)
reactivity
d)
waste
8.

Ms Pippin 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.

9.
Electrical charge built up on the surface of an object is called _________________.
a)
static electricity
b)
current electricity
c)
lightning
d)
electrons
10.
wood is a _____?
a)
conductor
b)
insulator
11.
This circuit won't work. What essential part is missing from this circuit?
a)
resistance
b)
source of electric current
c)
conductor
d)
ammeter
12.
The force that pushes the electricity through a circuit is called...
a)
resistance
b)
voltage
c)
current
d)
switch
13.
What slows down the flow of electricity in a circuit?
a)
resistance
b)
voltage
c)
current
d)
source of electric current
14.

What is a circuit that only has ONE path for electricity to flow?

a)

series circuit

b)

closed circuit

c)

parallel circuit

d)

light bulb

15.

What is a circuit with several paths for electricity to flow?

a)

conductor

b)

series circuit

c)

parallel circuit

d)

open circuit

16.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
17.

Every magnet has a _____ pole.

a)

North

b)

South

c)

North and South

18.

What types of energy does the toy oven use to bake the cakes?

a)

Light and sound

b)

Electrical and thermal

c)

Thermal and mechanical

d)

Mechanical and electrical

19.
fWhich of the following is NOT mechanical energy?
a)
Pedaling a bike
b)
Rowing a boat
c)
Turning on a light bulb
d)
ocRunning up a hill
20.
Heat is another name for-
a)
thermal energy
b)
magnetic energy
c)
electrical energy
d)
mechanical energy
21.

Amplitude is...

a)

measurement of the height of a wave

b)

the speed of sound. 343 meters per second

c)

the distance it takes for one wave cycle to occur

d)

the unit of measurement of frequency

22.

how often a wave occurs in a given amount of time

a)

frequency

b)

wavelength

c)

amplitude

23.

The highest part of a transverse wave is

a)

the crest

b)

the trough

c)

the wave point

d)

the hotel transylvania

24.

The lowest part of a transverse wave are the

a)

crests

b)

troughs

c)

wave points

d)

low nodules

25.

The distance between two corresponding parts of a wave is its

a)

amplitude

b)

frequency

c)

wavelength

d)

velocity

26.

The height of the wave from its resting point is called its

a)

wavelength

b)

amplitude

c)

velocity

d)

frequency

27.
Which way do the waves generated by an earthquake travel?
a)
out in space
b)
outward in all directions
c)
towards the center of earth
d)
along the surface of earth
28.

The_________________of an earthquake is on the surface directly above the _______________.

a)

center, fault

b)

epicenter, focus

c)

focus, epicenter

29.
_________ is another word for an earthquake's strength.
a)
Intensity
b)
Frequency
c)
Magnitude
d)
Pressure
30.

Which graph best represents the relationship between the strength of an electric field and distance from a point charge?

a)
b)
c)
d)
31.
How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor
a)
12 volts
b)
24 volts
c)
1.3333
d)
48 volts
32.

The electricity in our house is

a)

AC

b)

DC

c)

BC

d)

AD

33.

A 4000-Ω resistor is connected across a 220-V power source. What current will flow through the resistor?

a)

0.055 A

b)

1.8 A

c)

5.5 A

d)

18 A

34.

What do you call that symbol?

a)

resistance

b)

current

c)

microfarad

d)

ohm

35.

What does the following symbol represents?

a)

Battery

b)

Resistor

c)

Bulb

d)

Ammeter

36.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
37.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
38.

Each battery is a 10-V battery. What is the voltage difference between points B and D?

a)

10 V

b)

20 V

c)

30 V

d)

40 V

39.
The equivalent or total resistance (Req) in this circuit is
a)
25.7 Ω
b)
315 Ω
c)
0.0389 Ω
d)
2835 Ω
40.
What kind of circuit is this?
a)
series
b)
parallel
41.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
42.
When a 9 volt battery is connected to a 3 ohm resistor, how much current flows in the circuit?
a)
3 amps
b)
6 amps
c)
9 ohms
d)
100 watts
43.

When the second bulb is added, they get

a)

brighter

b)

dimmer

c)

broken

d)

cold

44.
The picture is an example of an:
a)
Electric circuit
b)
Electromagnet
c)
Electric nail
d)
Electric power cell
45.
What property of this wave is represented by the letter "A"
a)
amplitude
b)
crest
c)
trough
d)
wavelength
46.
The Doppler Effect is possible in...
a)
Only sound waves.
b)
Only light waves.
c)
All kinds of waves.
d)
Only pressure waves.
47.

An ocean wave usually occurs at a frequency of 0.2 Hz. What is the period of each wave?

a)

5 seconds

b)

0.2 seconds

c)

12 seconds

d)

300 seconds

48.

what type of wave is pictured

a)

transverse

b)

longitudinal

c)

slinky

49.

A wave machine generated waves with a wavelength of 0.080 m at a constant wave speed of 17 m/s. Calculate the frequency of the waves.

a)

212 Hz

b)

1.36 Hz

c)

0.00470 Hz

d)

16.92 Hz

e)

1.36

50.
Which type of lens is shown?
a)
Concave
b)
Convex
c)
Reflective
d)
Refracting
51.
A ________ converges light due to ______. 
a)
convex lens; refraction
b)
concave lens; reflection
c)
convex lens; absorption
d)
convex mirror; transmission
52.
Which of the following is TRUE about the picture? 
a)
The straws appear bent due to reflection of light
b)
The liquid in the containers have different refractive indices
c)
The straws appear identical due to having similar n-values
d)
Light is refracted at the same angles in the liquid containers
53.

A concave mirror is curved

a)

inward

b)

outward

54.

Which lens represents the path light takes through a diverging lens?

a)
b)
c)
d)
55.

Magnetic Field lines around a bar magnet:

a)

are perpandicular the the magnet

b)

spread out from north pole and curve to south

c)

Cross back and forth over eachother

d)

are perfectly straight

56.

Magnetic poles that are UNLIKE will:

a)

attract

b)

repel

c)

do nothing

d)

all of these.

57.

As the earth rotates, the magnetic poles:

a)

stay the same

b)

change a little

c)

Switch completely

d)

disappear

58.

The earth is like a magnet because:

a)

It has a magnetic field due to its core

b)

it has a magnetic field do to its crust

c)

There is a magnetic pole in the earth's core

d)

Gravity generates a magnetic field

59.

You can increase the strength of an electromagnet by:

a)

Decreasing the battery charge

b)

Decreasing the amount of loops in the solenoid

c)

Winding the coils more closely

d)

Winding the coils more loosely

60.

On an atomic level, what creates a magnetic force?

a)

gravity

b)

electrons

c)

protons

d)

neutrons

61.

Running electricity through metal produces:

a)

a magnet

b)

a magnetic field

c)

a solenoid

d)

an insulator

62.

What is the difference between a galvanometer and an electric motor?

a)

Electric motor does not require electric current

b)

Galvanometer uses electric energy

c)

In an electric motor, the wire spins

d)

an electric motor uses electric energy

63.

you can inccrease the strength of an electromaget by

a)

Decreasing the current

b)

Decreasing the loops

c)

using a stronger iron (Ferro) material

d)

winding the coils more loosely

64.

DC Current stands for:

a)

Direct Current

b)

Alternating Current

c)

Diametric Current

d)

Induced Current

65.

In the diagram, an electric motor is pictured. This motor works by:

a)

The wire makes the magnets move

b)

The magnets spin and generate electricity

c)

The current causes the wire (Armature) to spin

d)

the magnets take energy directly from the battery

66.

How do Maglev trains go up to 311 MPH?

a)

a train is pulled by a big magnet at the end of the tracks

b)

electric motors push the train and cause it to levitate

c)

Magnetized coils repel magnets on the train which moves it

d)

a generator creates electricity which fuels the train

67.

a magnetic crane picks up pieces of metal in the picture. the crane magnet is made by electrified current and a coil. Most likely, what element is the metal?

a)

copper

b)

steel

c)

aluminum

d)

iron

68.

A magnetic pole is the part of the magnet where the magnetic field is the..

a)

Strongest

b)

Weakest

c)

Most average

69.

Electromagnetic Induction is a technical way to say that we can create a magnetic field using electricity.

a)

True

b)

False

70.

A compass works because of the effect that the moon has on the earth's magnetic field.

a)

True

b)

False

71.

Increasing the number of loops in a solenoid will cause its strength to increase.

a)

True

b)

False

72.

Electromagnetic waves are generated by ____________?

a)

movement of electric charges

b)
reflection of light waves
c)
conduction of heat energy
d)
gravitational force between objects
73.

Which of the following is not a characteristic of electromagnetic waves?

a)

They require a medium to travel

b)

They travel at the speed of light in vacuum

c)

They can be polarized

d)

They are transverse waves

74.

What is the speed of light in vacuum, commonly used in calculations involving electromagnetic waves?

a)

3 x 10^8 m/s

b)

2 x 10^8 m/s

c)

1 x 10^8 m/s

d)

5 x 10^8 m/s

75.

Which component of the electromagnetic spectrum has the shortest wavelength?

a)

Infrared

b)

Visible Light

c)

Ultraviolet

d)

Gamma rays

76.
electromagnetic waves with the longest wavelengths are
a)
gamma rays
b)
x-rays
c)
infrared waves
d)
radio waves
77.

Electromagnetic waves are made up of ________.

a)

Protons

b)

Photons

c)

Electrons

d)

Leptons

78.
Select the correct order of waves on the EMS from the longest wavelength to the shortest wavelength
a)
Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma
b)
Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio
c)
Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio
d)
Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma
79.

Light acts as a _______?

a)

Particle

b)

Force

c)

Wave

d)

Mystery

80.
What form does light travel in?
a)
Curved line
b)
Zig-Zag
c)
Straight Line
81.

If the index of refraction for air is approximately 1 and for water it is approximately 1.33, what can be inferred about the speed of light in these media?

a)

Light travels faster in water than in air

b)

Light travels slower in water than in air

c)

Light travels at the same speed in both water and air

d)

The speed of light in water is unpredictable

82.

The dark sections of the light band presented in the image represent what interference?

a)
Destructive interference
b)
Partial interference
c)
Constructive interference
d)
Negative interference
83.

What is the term for the bending of light waves as they pass from one medium to another?

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Polarization

84.

While performing the double slit experiment, if you bring the openings closer together, how will the light pattern change?

a)
The interference pattern will change color.
b)

The interference pattern will create more bright spots(fringes).

c)

The interference pattern will have less bright spots(fringes).

d)
The interference pattern will disappear completely.
85.

Light is (a)   when mixed so it becomes brighter.

86.

A flash light is sending white light towards two filters. The first filter is blue and the second filter is red. What light get through the filters?

a)
Only blue light will get through the filters.
b)
Green light will get through the filters.
c)
No light will get through the filters.
d)
Only red light will get through the filters.
87.

You have two polarizers and you want to block out 50% of the light coming through the polarizer. At what angle would you hold the two polarizers?

a)
30 degrees
b)
60 degrees
c)
90 degrees
d)
45 degrees
88.

The law of reflection states that?

a)
The angle of reflection is perpendicular to the angle of incidence.
b)
The law of reflection only applies to curved surfaces.
c)
The angle of incidence is equal to the angle of reflection.
d)
The angle of incidence is greater than the angle of reflection.
89.

Light shines through air and hit glass at an angle 30 degrees. If the Index of Refraction is 1.25, What is the angle of refraction?

a)
23.578 degrees
b)
20.345 degrees
c)
28.912 degrees
d)
25.678 degrees
90.

Why does the object not produce an image?

a)

The object is on the focal point

b)
The object is too small
c)
The object is transparent
d)
The object is too far away
91.

Where would you place the object to make the image larger than the object?

a)

Farther from the concave mirror

b)

Keep the object the same distance from the mirror

c)

Place the object to the side of the mirror

d)

Closer to the concave mirror

92.

A convex mirror always produces a ___________ image?

a)
Virtual, upright, and smaller
b)
Real, upright, smaller
c)
Virtual, inverted, larger
d)
Real, inverted, larger
93.

Describe the image that is created in this diagram

a)

Virtual

b)

Real

c)

Upright

d)

Inverted

e)

Larger

94.

A diverging lens only creates a ________ image?

a)
magnified
b)
inverted
c)
real
d)
virtual
95.

The distance of an object is 2 meters, the distance of the image is .5 meters. What is the focal length?

a)
0.2 meters
b)
0.4 meters
c)
1 meter
d)
3 meters
96.

What is the magnification of an image if the height of the image is 0.25 and the height of the object is 2.5?

a)
0.1
b)
0.3
c)
0.2
d)
0.5
97.

You stand in front of a mirror and stop. You are 1.5 meters tall and stand 0.5 meters from the mirror. If the image height is 0.5, what is the focal point?

a)
0.7 meters
b)
0.5 meters
c)
0.3 meters
d)
1.0 meters
98.
What type of wave is this?
a)
Longitudinal
b)
Transverse
99.
Which property of these waves differs?
a)
Frequency
b)
Wavelength
c)
Amplitude
d)
Pitch
100.
Which waves do NOT need a medium?
a)
Sound
b)
Ocean
c)
Seismic
d)
Light
101.
A high energy wave is considered to have a high 
a)
amplitude
b)
frequency
c)
wavelength
d)
period
102.
Which letter is a crest?
a)
F
b)
G
c)
H
d)
J
103.
What type of waves have compressions and rarefactions?
a)
longitudinal
b)
transverse
104.
Which letter is a trough?
a)
F
b)
G
c)
H
d)
J
105.
Which letter shows amplitude?
a)
F
b)
G
c)
H
d)
J
106.
Which letter identifies the wavelength?
a)
F
b)
G
c)
H
d)
J
107.
What type of wave is this?
a)
Longitudinal
b)
Transverse
108.
Which wave has the highest frequency?
a)
1
b)
2
c)
3
d)
4
109.
Frequency is
a)
Amount of time it takes for one wavelength
b)
How many wavelengths are completed in one second
c)
Distance between two crests or two troughs
d)
Amount of energy in a wave
110.
What is the material waves travel through?
a)
Period
b)
Frequency
c)
Medium
d)
Hertz
111.
Which part of a longitudinal wave is where particles are packed closely together?
a)
compression
b)
rarefaction
c)
crest 
d)
amplitude
112.
What do all waves transfer?
a)
Light
b)
Sound
c)
Heat
d)
Energy
113.
Frequency is measured in
a)
Newtons
b)
Joules
c)
Hertz
d)
Decibels
114.
Which is the correct equation for calculating the speed of a wave?
a)
T = 1/f
b)
Speed= Wavelength x Period
c)
Speed = Wavelength/Frequency
d)
Speed= Wavelength x Frequency
115.
A period is
a)
Amount of time it takes a wavelength to complete one cycle.
b)
How many wave lengths happen in a second.
c)
An indication of the amount of energy in a wave.
d)
The distance between two crests or two troughs.
116.
Sound travels best through
a)
solids
b)
liquids
c)
gases
d)
colloids
117.
These waves have the same
a)
amplitude
b)
frequency
c)
period 
d)
wavelength
118.

As an electron falls from n = 5 to n = 2, it emits a photon with a wavelength of ___________.

a)

104 nm

b)

113 nm

c)

155 nm

d)

311 nm

e)

210 nm

119.

As an electron falls from n = 5 to n = 3, it emits a photon with a wavelength of ___________.

a)

104 nm

b)

113 nm

c)

155 nm

d)

311 nm

e)

210 nm

120.

As an electron falls from n = 3 to n = 2, it emits a photon with a wavelength of ___________.

a)

104 nm

b)

113 nm

c)

155 nm

d)

311 nm

e)

210 nm

121.

What is the wavelength of a photon with an energy of 2.7 e

V.

a)

151 nm

b)

460 nm

c)

781 nm

d)

177 nm

e)

485 nm

122.

How long does it take a 180-gram of gold-198 to decay to 22.5 grams if the half -life of gold-198 is 2.68 days?

a)

8.04 days

b)

3 days

c)

4 days

d)

2.68 days

123.

How long will it take for a 28-gram sample of radon-222 to decay to 3.5 grams? the half-life of radon-222 of 3.82 days

a)

15.28 days

b)

11.46 days

c)

3 days

d)

4 days

124.

How long will it take for a 150-gram sample of Nitrogen-16 tp decay to 18.75 grams if the half-life for Nitrogen -16 is 7.2 seconds

a)

7.2 seconds

b)

14.4 seconds

c)

18.75 seconds

d)

21.6 seconds

125.

How long will it for a take for a 40 gram. The half-life of cobalt-60 is 5.26 years sample ofcobalt-60 to decay to 5 grams?

a)

17.75 days

b)

15.78 years

c)

15.15 years

d)

17.17 years

126.

In the equation, 146C --> 147N + 0-1B, the _______ decay of radioactive carbon-14 results in the creation of a new nitrogen-14 atom.

a)

Gamma

b)

Beta

c)

Alpha

127.
Uranium-238  decays into  Thorium-234  by emitting .........
a)
an alpha particle
b)
a beta particle
c)
gamma rays
d)
visible light
128.
If we start off with element 24X50 after an alpha decay we get another element Y that looks like
a)
22Y50
b)
22Y46
c)
20Y48
d)
26Y54
129.

The nucleus is held together by the ___________________________force.

a)

The Strong Nuclear Force

b)

The Weak Nuclear Force

c)

Electromagnetism

d)

Gravity

130.
Has the highest penetrating power.  Can penetrate our body.  Even several cm thick of lead or several meters thick of concrete cannot stop all of it.
a)
Alpha
b)
Beta
c)
Gamma
131.

24094Pu —› ____ + 42He

a)

23692U

b)

24796Cm

c)

24493Np

d)

24295Am

132.
How many protons are in this atom?
a)
3
b)
4
c)
6
d)
10
133.
How many neutrons are in this isotope of Uranium?
a)
235
b)
92
c)
327
d)
143
134.

Gamma rays have

a)

no mass

b)

a huge mass

c)

a small mass

d)

an average mass

135.

The half-life of Zn-71 is 2.4 minutes. Starting with 100.0 g, how many grams would remain after 7.2 minutes?

a)

100.0 g

b)

50.0 g

c)

12.5 g

d)

8.5 g

136.

The half-life of strontium-90 is 25 years. How much will remain after 100 years if the initial amount is 4.0 g?

a)

3.0 g

b)

0.25 mg

c)

0.3 g

d)

6.25 g

137.

The % of the parent isotope remaining after 1 Half Life.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

138.
If the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?
a)
1 half-life
b)
2 half-lives
c)
3 half-lives
d)
4 half-lives
139.
If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of iodine-131 is 8 days.
a)
1.25mg
b)
1.25g
c)
10g
d)
10mg
140.
If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of iodine-131 is 8 days.
a)
1.25mg
b)
1.25g
c)
10g
d)
10mg

141-150.

Answer the questions below after watching the video

141.

What is the primary material used in electrical circuits for the flow of electrons?

a)

Copper

b)

Silicon

c)

Aluminum

d)

Gold

142.

What does a higher voltage in a circuit imply?

a)

Lower electron flow

b)

Higher resistance

c)

Higher electron flow

d)

Decreased current

143.

What is the unit used to measure electrical current?

a)

Volt

b)

Ampere

c)

Ohm

d)

Watt

144.

What type of current is used primarily in household wiring?

a)

Direct Current (DC)

b)

Alternating Current (AC)

c)

Static Current

d)

Conductive Current

145.

Which type of current flows in one direction only?

a)

DC

b)

Multi-directional Current

c)

Bidirectional Current

d)

AC

146.

What device is commonly used to measure the flow of current in a circuit?

a)

Voltmeter

b)

Oscilloscope

c)

Multimeter

d)

Capacitor

147.

What does an ammeter measure?

a)

Voltage

b)

Current

c)

Resistance

d)

Power

148.

What happens when the current exceeds the capacity of a circuit?

a)

The circuit becomes more efficient

b)

The circuit breaks or burns out

c)

The circuit cools down

d)

The circuit expands

149.

What is the purpose of a fuse in an electrical circuit?

a)

Store electrical energy

b)

Break the circuit when overloaded

c)

Decrease voltage

d)

Increase current flow

150.

How does a circuit breaker protect an electrical circuit?

a)

By reducing electron flow

b)

By adding resistance

c)

By increasing voltage

d)

By breaking the circuit when overloaded

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