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Physics Semester 2 Exam Review

Total questions: 95

Worksheet time: 2hrs 44mins

Name
Class
Date
1.
A device that makes work easier is called
a)
machine
b)
magnet
c)
mechanical advantage
2.
A _______ pulley is used to reduce the amount of effort force.
a)
movable
b)
fixed
c)
single
3.
How can an incline plane reduce the amount of force required to lift an object?
a)
increase the length of the ramp
b)
increase the height of the ramp
c)
decrease the length of the ramp
4.
The efficiency of a machine can be increased by reducing __________________________. 
a)
effort
b)
resistance friction
c)
fulcrum
d)
friction
5.
A device that has two or more simple machines working together 
a)
fulcrum 
b)
pulley
c)
compound (complex) machine 
d)
motor 
6.
The fixed point on the lever is called 
a)
load
b)
resistance
c)
bar
d)
fulcrum
7.
Pedals, handle bars and handbrakes on a bicycle
a)
wedges
b)
pulleys
c)
incline planes
d)
levers
8.
How could I reduce the effort force needed to lift the load?
a)
move the fulcrum away from the load
b)
move the fulcrum closer to the load
c)
place the fulcrum in the middle
9.

A _______ is a machine used to hold two objects together.

a)

pulley

b)

lever

c)

inclined plane

d)

screw

10.
Which of the following is the BEST choice to lift a piano to a third floor window? 
a)
lever 
b)
pulley 
c)
wedge 
d)
wheel and axle
11.
Two inclined planes placed back to back forms this simple machine 
a)
pulley
b)
wedge
c)
lever
d)
wheel and axle 
12.
Which simple machine would stairs be an example? 
a)
a wedge 
b)
an inclined plane 
c)
a pulley 
d)
a lever
13.
When the temperature of matter decreases the particles ...
a)
speed up and move farther apart
b)
speed up and move closer together
c)
slow down and move farther apart
d)
slow down and move closer together
14.
The measure of average kinetic energy of all the particles within an object is called ____________. 
a)
temperature
b)
conduction
c)
radiation
d)
heat 
15.

Heat always travels from _____ to ______ objects

a)

hot to cold

b)

cold to hot

c)

cold to cold

d)

hot to hot

16.

Which of the following change when an object is heated?

a)

Macroscopic energy

b)

Nuclear energy

c)

Chemical energy

d)

Thermal energy

17.
Temperature is the same thing as heat.
a)
TRUE
b)
FALSE
18.
A(n) _____________ is a device for measuring temperature.
a)
thermometer
b)
barometer
c)
anemometer
d)
psychrometer 
19.
What is the temperature of the warmest thermometer?
a)
13 degrees
b)
20 degrees
c)
30 degrees
d)
22 degrees
20.
___________ is a measure of how hot or cold something is. 
a)
fire
b)
friction
c)
temperature
d)
scale 
21.
Convert 20oC to Kelvin.
a)
273 K
b)
298 K
c)
293 K
d)
20 K 
22.
Absolute zero is...
a)
-273º C
b)
0º C
c)
-373º C
d)
273º C
23.
Convert 300 K to oC
a)
27oC
b)
0oC
c)
-27oC
d)
573oC
24.
Convert 15°C to Fahrenheit
a)
63.8°F
b)
84.6°F
c)
-9.4°F
d)
59°F
25.
What is the definition of CONDUCTION?
a)
When heat is transferred from objects like rays of light or electromagnetically.
b)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
c)
When heat transfers from objects that are touching.
d)
When heat transfers through the heater or AC in your house.
26.
The heat from a hot burner to a pot is transferred by ______.
a)
convection
b)
insulation
c)
radiation
d)
conduction
27.
The Gulf Stream is a current that brings warm ocean water from the south to the north. What type of heat transfer is this?
a)
conduction
b)
convection
c)
radiation
d)
Insolation 
28.
Transfer of thermal energy through "space"
a)
conduction
b)
convection
c)
radiation
29.
Jackson likes to cook but is always in a hurry. He needs a pot that will cook his food quickly. Which is the best material for his cooking pot?
a)
copper
b)
glass
c)
plastic
d)
wood
30.
Materials that conduct heat slowly are called
a)
Insulators
b)
Instigators
c)
Alligators
d)
Conductors
31.
Heat always moves from an object of __________ temperature to an object of _________ temperature.
a)
moderate, high
b)
higher, lower
c)
lower, higher
d)
zero, high
32.

Which of the following is an example of convection?

a)

Water turning to ice when the temperature is below 0

b)

Coal is burning to produce heat

c)

Only the water in the bottom of a pot heating since the hot water rises and pushes cold water down

d)

None of the above

33.
A toaster toasting bread is an example of 
a)
condensation
b)
conductio
c)
convection
d)
radiation
34.
What happens when ice cubes melt in a glass?
a)
Heat travels from the ice to the warmer water.
b)
No energy is transferred.
c)
Heat is transferred from the warmer water to the ice cubes.
d)
The water warms up due to the humidity
35.
Which is more dense?
a)
Hot Liquid
b)
Cold Liquid
36.

Heat is transferred by

a)

conduction, convection and radiation.

b)

radiation only.

c)

conduction and radiation only.

37.
The amount of energy required to raise the temperature 1ºC for every kilogram is called____?
a)
Thermal Energy
b)
Specific Heat
c)
Temperature
d)
Kinetic Energy
38.
What is the symbol for Thermal Energy?
a)
Q
b)
t
c)
m
d)
C
39.
What is the equation to measure change in Thermal Energy?
a)
Q=mc∆t
b)
Q=mc
c)
Q= ∆mct
d)
m=QC
40.

What is the symbol for Specific Heat

a)

Q

b)

t

c)

m

d)

cp

41.
A material was cooled from 100ºC to 40ºC.  What is the temperature change?
a)
60ºC
b)
40ºC
c)
-60ºC
d)
-40ºC
42.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
43.

What property of this wave is represented by the letter "A"

a)

amplitude

b)

crest

c)

trough

d)

wavelength

44.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
45.
The lowest point on a wave is the:
a)
Amplitude
b)
Crest
c)
Trough
d)
Wavelength
46.
The number of wavelengths that pass a point each per second is:
a)
frequency
b)
period
c)
longitudinal 
d)
transverse wave 
47.
Which vocabulary term is used to identify the distance between points C & G?
a)
Amplitude
b)
Crest
c)
Frequency
d)
Wavelength
48.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
49.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
50.
which material does sound travel the fastest?
a)
solid 
b)
liquid 
c)
gases
51.
Which type of wave has movement that is parallel to the direction of the wave (pulse wave)?
a)
transverse wave
b)
longitudinal wave
c)
both
d)
none
52.
What waves have movement that is perpendicular to the direction of the wave(up/down, left/right)?
a)
Transverse wave
b)
longitudinal wave
c)
both
d)
none
53.

The type of wave that can travel through a medium but does not require a medium to travel through is called

a)

a mechanical wave

b)

an electromagnetic wave

c)

a transverse wave

54.

What is the frequency of a mechanical wave that has a velocity of 1.77 m/s and a wavelength of 12.05 m ?

a)

0.15 Hz

b)

0.51 Hz

c)

1.15 Hz

d)

2.0 Hz

55.

A microwave oven emits radiation at a wavelength of 0.005 m. What is the frequency of this radiation? The speed of of light is 3.0x 108 m/s.

a)

6.67 x 10-7 Hz

b)

2.00 Hz

c)

1.50 x 106 Hz

d)

6.00 x 1010 Hz

56.

Solve this problems using the equation:

λ= ν/f

If an AM radio station broadcasts at 9.95 x 105 Hz, what is the wavelength of this radiation? The speed of of light is 3.0x108 m/s.

a)

6.59 x 10-28 m

b)

1.01 x 10-6 m

c)

3.32 x 10-3 m

d)

301.5 m

57.

Work is measured in the same units as:

a)

Force

b)

Momentum

c)

Mass

d)

Energy

58.

Which term is the unit of Power?

a)

Joule

b)

Newton

c)

Watt

d)

Hertz

59.

A force of 80 N pushes a 50 kg objects across a level floor for 8 meters. The work done is...

a)

10 J

b)

400 J

c)

640 J

d)

3920 J

60.

The work done in lifting an object must result in an increase in the object’s...

a)

Gravitational Potential Energy

b)

Kinetic Energy

c)

Heat Energy

d)

Electrical Energy

61.

Amy uses 20 N of force to push a lawn mower 10 meters. How much work does she do?

a)

20 J

b)

2 J

c)

200 J

d)

0 J

62.
Which point has the greatest potential energy (GPE)?
a)
A
b)
G
c)
D
d)
C
63.

which point has the most kinetic energy

a)

A

b)

B

c)

C

d)

F

64.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
65.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
66.
The unit used to measure work is the 
a)
Watt
b)
Newton
c)
Joule
d)
meter
67.
Unit for Force
a)
Joules
b)
Newton
c)
Meter
d)
Watt
68.
 What is the kinetic energy of the rock in the picture?
a)
0 J
b)
50 J
c)
5000 J
d)
49,000 J
69.

What needs to be done to this circuit so that the lamp lights up?

a)

Close the switch

b)

Add a source and close the switch

c)

Add another lamp

d)

Add another lamp and a switch

70.

If lamp 1 is unscrewed from its holder, what will happen to lamp 2?

a)

It will get brighter

b)

It will stay the same brightness

c)

It will go out

d)

Nothing will happen

71.

If lamp 2 is unscrewed from its holder, what will happen to lamp1?

a)

It will stay lit

b)

It will go out

c)

It will get dimmer

d)

It will dissapear

72.
What kind of circuit is this?
a)
series
b)
parallel
73.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
74.
What is a Parallel circuit? 
a)
Has only one path 
b)
Has more than one path 
c)
Allows energy to travel through easily 
d)
Has only one light bulb
75.
The picture shows an electrical circuit. This circuit is a series circuit because: 
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current has more than one path to flow through
76.

If the cell above has a potential difference of 8V, what is the potential difference across one bulb?

a)

8V

b)

4V

c)

16V

d)

2V

77.

If the cell in the circuit above has a potential difference of 8V, what is the potential difference across one of the bulbs?

a)

8V

b)

4V

c)

16V

d)

2V

78.
This is the symbol for a _____?
a)
an AC current source
b)
a DC current source
c)
a battery
d)
a single cell
79.
This is the symbol for a _____?
a)
Lamp
b)
Water wheel
c)
Loudspeaker
d)
Motor
80.
What is one problem with using a series circuit? 
a)
It has a lot of series. 
b)
If one goes down, they all go down! 
c)
It doesn't work properly.
d)
There are no problems. 
81.
What is one benefits of using a parallel circuit?  
a)
It gets confusing.
b)
There are no problems.
c)
If one goes down, it does not affect the others. 
d)
Porque es para llelio. 
82.

A potential difference of 24 V is applied to a 150 resistor. How much current flows through the resistor?

a)

0.15 A

b)

3600 A

c)

6.25 A

d)

0.16 A

83.
Calculate the current when the potential difference is 10V and resistance is 2Ω
a)
5mA
b)
5A
c)
20A
d)
0.2A
84.
What is the missing current ?
a)
0.33 A
b)
1A
c)
2A
d)
3A
85.
What is the total resistance
a)
20V
b)
0.8Ω
c)
25Ω
d)
1.2Ω
86.

As resistors are added in series to a circuit, the total resistance will...

a)

increase

b)

decrease

c)

stay the same

d)

I don't know

87.
Unit for resistance
a)
Ampere
b)
Ohm
c)
Volt
d)
Watt
88.
Unit for current
a)
Ohm
b)
Ampere
c)
Volt
d)
Watt
89.
In a parallel circuit which of the following is the same value throughout the circuit?
a)
Voltage
b)
Current
c)
Resistance
d)
Charge
90.
The total resistance of this circuit is 
a)
25.7 ohms
b)
315 ohms
c)
324 ohms
d)
90 ohms
91.
An ammeter is a device that can be used to measure
a)
Current
b)
Voltage
c)
Resistance
d)
Power
92.

What is the current through R1?

a)

10 A

b)

5 A

c)

7 A

d)

2 A

93.

Assume that the voltage of the battery is 9 V and that the three resistors are identical. What is the potential difference across each resistor?

a)

12 V

b)

0 V

c)

3 V

d)

4 V

94.

Total resistance in a parallel circuit

a)

Rt = R1 + R2 + R3 ...

b)

1/Rt = 1/R1 + 1/R2 ...

c)

Rt = R1 X R2 / R1 + R2 ...

d)

Rt = RN / RV

95.
If you increase the voltage of a circuit, what happens?
a)
Current decreases
b)
Current increases
c)
Electrons disappear
d)
Bulbs get dimmer

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