Semester 2 Exam
Date:
Name:
1.
The diagram shows two bowling balls of equal
mass. Ball A is resting near the edge of a shelf.
Ball B is resting on the ground below.
3.
Which of the following is the best example of
work being done on an object?
A.
holding a 50 kg barbell
B.
lifting a bag of groceries
C.
keeping a board in place
D. pushing on a car that will not move
Which of these statements best describes the
diagram above?
A.
Ball A has more kinetic energy than Ball B.
B.
Ball B has more kinetic energy than Ball A.
C.
Ball A has more potential energy than Ball B.
4.
D. Ball B has more potential energy than Ball A.
A.
5.
2.
As a heavy metal ball rolls down a hill, it goes
faster and faster. Which statement is true?
A.
The ball's potential energy is changing to
kinetic energy.
B.
The ball is gaining potential energy from the
hill.
C.
The ball is rapidly losing kinetic energy as it
rolls down the hill.
A 2.0-kilogram mass is moving with a speed of
3:0 ms . What is the kinetic energy of the mass?
6.
D. The ball will continue gaining kinetic energy
until it stops.
B.
6.0 J
C.
9.0 J
D. 12.0 J
An engine has an input of heat energy of 10,750 J
and does 2420 J of work. Which of the following
is the heat loss?
A.
0.225 J
B.
C.
8330 J
D. 13,170 J
4.44 J
What is the potential energy acquired by an object
with a mass of 5.00 kilograms when it is raised
5.00 meters?
A.
page 1
1.5 J
25.0 J
B.
49.0 J
C.
245 J
D. 480. J
7.
A total of 750 J of work was done when a force
of 125 N was exerted on a box to move it. How
far was the box moved?
A.
6.00 m
B.
C.
850. m
D. 906 m
10.
600. m
When a steel block at 100 C is placed on top of
a copper block at 20 C, the thermal energy of the
copper begins to increase. Which of the following
is the source of this increase in energy?
A.
the work done by the molecules within the
copper
B.
the work done by the interaction of the two
metals
C.
heat owing by means of conduction
D. heat owing by means of radiation
8.
The temperature at which all molecular motion
stops is
A.
C.
460 C.
0 K.
B.
273 K.
D. 0 C.
9.
11.
Which of the following statements best describes
the energy transformation that occurs when a log
burns?
A.
Mechanical energy changes to chemical
energy.
B.
Chemical energy changes to heat and light
energy.
C.
Heat and light energy changes to chemical
energy.
Water cools from 2 C to 2 C. During this time,
what happens to the motion of the molecules?
A.
The motion of the molecules stops.
B.
The motion of the molecules increases.
C.
The motion of the molecules decreases.
D. The motion of the molecules remains the
same.
D. Mechanical energy changes to heat and light
energy.
page 2
Semester 2 Exam
12.
Which of the following objects transfers its energy
primarily by radiation?
13.
Heat lamp
A.
Which of the following is the best example of heat
transfer by convection?
from the lower water
A.
to the surface
B.
B.
from the iron to the
Electic
stovetop
Ceiling
C.
shirt
C.
from the Sun to Earth
fan
D.
Burning candle
D.
from the griddle to the
eggs
14.
One end of a horizontal string is caused to
oscillate vertically while the other end is attached
to a xed object. The wave that travels along the
string is an example of
A.
an electromagnetic wave.
B.
a transverse wave.
C.
a microwave.
D. a longitudinal wave.
page 3
Semester 2 Exam
15.
The diagram below shows a wave trace.
17.
Use the diagram below to answer the following
question(s).
A student produces a series of waves, as
shown below.
Which number in the diagram represents a
wavelength?
A.
1
B.
2
C.
3
D. 4
Distance Z is a measure of
A.
amplitude.
B.
frequency.
C.
wavelength.
D. wave speed.
18.
16.
Which of the following would cause a change in
the speed of a mechanical wave?
A large spring is stretched horizontally between
two people. One person wiggles the spring up and
down at one end. The up-and-down vibration then
moves along the spring to the other person.
A.
the wave moving through a liquid
B.
the wave moving from a solid to a gas
C.
the wave being made by a larger vibration
Which of the following types of wave is created in
the spring?
D. the wave being made by a smaller vibration
A.
pressure wave
B.
transverse wave
C.
longitudinal wave
D. nonmechanical wave
page 4
Semester 2 Exam
19.
Which of the following observations is a result of
the Doppler e ect?
A.
Noise from across a lake is louder at night
than during the day.
B.
A person walking notices that the pitch of a
car's engine decreases as the car passes by.
C.
Beats are produced when two tuning forks
with di erent frequencies are heard together.
21.
Jack turned on a radio station and listened to
music.
D. A person hears the sound from a radio more
clearly in certain areas of a room than in
others.
How does the radio change waves and energy so
Jack can hear the music?
A.
Electromagnetic waves are changed into the
chemical energy in batteries.
B.
Sound waves are changed into the chemical
energy in batteries.
C.
Sound waves are changed into electromagnetic
waves.
D. Electromagnetic waves are changed into sound
waves.
20.
Sound reaches our ears because sound makes air
particles
A.
heat up.
B.
cool down.
C.
slow down.
D. vibrate.
22.
What property of electromagnetic waves makes it
possible to use these waves to transmit information
between a space shuttle and NASA mission control
centers on the ground?
A.
Electromagnetic waves are transverse waves.
B.
Electromagnetic waves have very low velocity.
C.
Electromagnetic waves are all visible to
human eyes.
D. Electromagnetic waves can travel through a
vacuum.
page 5
Semester 2 Exam
23.
Visible light passes through glass. Other types of
electromagnetic radiation are able to pass through
other materials in a similar way.
25.
Use the picture below to answer the following
question.
Which of the following are used in medical
technology because they can pass through some
parts of the human body?
A.
x-rays
B.
infrared waves
C.
microwaves
D. ultraviolet rays
The spoon appears to be broken where it enters
the water because
A.
the light is re ected by the water.
B.
the light is absorbed by the water.
C.
the light is bent by the water.
D. the light is dissolved by the water.
24.
What happens to green light and red light when
they shine on a green leaf?
A.
Both are absorbed.
B.
Both are re ected.
C.
Green light is absorbed, and red light is
re ected.
D. Green light is re ected, and red light is
absorbed.
page 6
Semester 2 Exam
26.
A beam of light is shining on the surface of a
liquid. Which diagram shows what happens when
the light is re ected by the liquid?
27.
Which of the following diagrams represents the
refraction of waves?
A.
A.
B.
B.
C.
C.
D.
D.
page 7
Semester 2 Exam
28.
The following picture shows what Jody observes
when she uses a lens to look at a stamp.
29.
What happens to light passing through a lens that
causes the gure of the stamp to appear larger
than the real stamp?
A.
The light is re ected.
B.
The light is refracted.
C.
The light is scattered.
Look at the diagram of the circuit below.
Which statement best describes what will happen
if Bulb 2 burns out?
D. The light is absorbed.
A.
Bulb 1 will also burn out.
B.
Bulb 1 will ash on and o .
C.
Bulb 1 will stay lit and become brighter.
D. Bulb 1 will stay lit but will become less
bright.
30.
page 8
Each picture shows a light bulb connected to a
battery. Which bulb will light?
A.
B.
C.
D.
Semester 2 Exam
31.
A circuit diagram is shown below.
33.
In an electrical circuit, the voltage (V) is 35 volts
and the resistance (R) is 5 ohms.
Ohm's law (V = IR)
What is the current (I) in the circuit?
A.
0.14 ampere
B.
7.0 amperes
C.
175 amperes
D. 350 amperes
Which component in the diagram converts
chemical energy into electrical energy?
A.
component W
B.
component X
C.
component Y
D. component Z
32.
What is the current through the battery?
A.
1A
B.
2A
C.
4A
D. 8 A
page 9
Semester 2 Exam
34.
The diagram below shows an incomplete circuit
due to a break in the wire at point X.
35.
A student is testing materials to see if they conduct
electricity. The student places each item shown at
position X, making sure the object is in contact
with the loose end of each wire. Which item will
electricity ow through, causing the bulb to light?
The picture below shows an incomplete electrical
circuit.
Which of the following objects can be connected
to the ends of the two wires to make the circuit
complete and light the bulb?
A.
A.
a battery
B.
a switch
C.
another bulb
D. another wire
B.
36.
C.
37.
D.
page 10
Electric charges can move most easily on which of
the following objects?
A.
glass tubes
B.
metal plates
C.
plastic cups
D. rubber tires
What is the voltage in a circuit with a current of
3 A and a total resistance of 12 ?
A.
0.25 V
B.
4V
C.
15 V
D. 36 V
Semester 2 Exam
38.
A portable electric hairdryer with a resistance of
15 connected to a 120 V outlet.
40.
The circuit diagram below shows D-cells connected
to four light bulbs and four di erent materials
labeled 1, 2, 3, and 4.
Ohm's Law
V = IR
V
I =
R
V
R =
I
What is the approximate current in the circuit?
A.
8A
B.
15 A
C.
105 A
D. 180 A
Which of the four materials is acting as an
insulator rather than a conductor?
39.
A.
A student has a circuit that is missing a component
at location X, as shown in the diagram below.
41.
The student wants component Y to warm up after
the switch is closed. Which of the following
components should the student add to the circuit
at location X?
A.
B.
C.
1
B.
2
C.
3
D. 4
Look at the diagram of the bar magnets below.
What will happen to the force between the two
magnets if they are pulled farther apart?
D.
A.
The force would be weaker.
B.
The force would be stronger.
C.
The force would stay unchanged.
D. The force would reverse the poles.
page 11
Semester 2 Exam
43.
42.
Which of the following electromagnets would have
the greatest magnetic eld?
A.
Which of the following is shown above?
A.
electromagnet
B.
electric motor
C.
electric generator
D. transformer
B.
C.
D.
page 12
Semester 2 Exam
44. A balloon has a negative charge. A glass rod has
a positive charge.
46.
The diagram below represents two bar magnets.
Which of the following diagrams shows the e ect
of magnetic energy on the magnets as the two
magnets above are moved closer together?
A.
What will happen when the glass rod is brought
near the balloon?
A.
The balloon will be attracted to the rod.
B.
The balloon will be repelled by the rod.
C.
The balloon will remain in place.
B.
C.
D.
D. The balloon will spin in circles.
45.
47.
A balloon is rubbed with a piece of cloth. As a
result, the balloon has a negative charge. What
has happened?
The picture below shows magnet 2 being pushed
toward magnet 1.
A.
Electrons have moved from the inside to the
outside of the balloon.
B.
Positive charges have traveled from the
balloon to the cloth.
Which of the following will most likely happen to
magnet 1 as magnet 2 is moved closer?
C.
Electrons have moved from the balloon to the
cloth.
A.
Magnet 1 will move under magnet 2.
B.
Magnet 1 will move toward magnet 2.
C.
Magnet 1 will move on top of magnet 2.
D. Electrons have traveled from the cloth to the
balloon.
D. Magnet 1 will move away from magnet 2.
page 13
Semester 2 Exam
48.
Gamma radiation consists of a steam of high
energy
A.
photons
B.
C.
neutrons
D. electrons
50.
protons
The ratio of the energy of a quantum of
electromagnetic radiation to its frequency is
A.
the electrostatic constant
B.
the electron volt
C.
the gravitational constant
D. Planck's constant
49.
Which phenomenon can only be explained by
assuming that light is quantized?
A.
polarization
B.
di raction
C.
interference
D. photoelectric e ect
page 14
Semester 2 Exam
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Semester 2 Exam
05/19/2015
1.
Answer:
C
21.
Answer:
D
2.
Answer:
A
22.
Answer:
D
3.
Answer:
B
23.
Answer:
A
4.
Answer:
C
24.
Answer:
D
5.
Answer:
C
25.
Answer:
C
6.
Answer:
26.
Answer:
D
7.
Answer:
27.
Answer:
B
28.
Answer:
B
29.
Answer:
C
8.
Answer:
D
9.
Answer:
10.
Answer:
C
30.
Answer:
D
11.
Answer:
C
31.
Answer:
B
12.
Answer:
A
32.
Answer:
A
13.
Answer:
A
33.
Answer:
14.
Answer:
B
34.
Answer:
D
15.
Answer:
A
35.
Answer:
A
16.
Answer:
B
36.
Answer:
B
17.
Answer:
B
37.
Answer:
D
18.
Answer:
B
38.
Answer:
A
19.
Answer:
B
39.
Answer:
B
20.
Answer:
D
40.
Answer:
Teacher's Key
41.
Answer:
A
42.
Answer:
A
43.
Answer:
D
44.
Answer:
A
45.
Answer:
46.
Answer:
D
47.
Answer:
D
48.
Answer:
A
49.
Answer:
D
50.
Answer:
D
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