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Physical World Revision Questions

Total questions: 212

Worksheet time: 2hrs 11mins

Name
Class
Date
1.
Volume is 
a)
the amount of space an object takes up.
b)
the amount of matter in an object.
c)
the distance from one point to another.
d)
the amount of heat in a substance.
2.

The Basic unit for measuring length in the Metric system

a)

Meter

b)

Liter

c)

inches

d)

yards

3.

What is mass?

a)

How much SPACE something takes up.

b)

How big something is.

c)

How much of something there is.

4.

A solid piece of plastic has a density of 1.5g/cm3. Will it FLOAT or SINK in water?

a)

Float

b)

Sink

5.

What is the energy conversion when you plug in a stereo and listen to music?

a)

electrical to mechanical

b)

chemical to heat

c)

electrical to sound

d)

potential to sound

6.

What is the energy conversion when you put batteries in a flashlight to make it turn on?

a)

chemical to light

b)

light to kinetic

c)

chemical to thermal

d)

nuclear to light

7.

What is the energy conversion when photosynthesis takes place as the sun makes a plant grow?

a)

thermal to chemical

b)

potential to nuclear

c)

chemical to potential

d)

light to chemical

8.

Fossil fuels _______________________________. That means there is a limited supply. Once the world runs out, there is no way to get more.

a)

are clean-burning

b)

are non-renewable resources

c)

came to Earth on comets

d)

are found in fossilized sea shells

9.

Where on the track does the roller coaster train have the greatest potential energy?

a)

Point 1

b)

Point 2

c)

Point 3

d)

Point 4

e)

Point 5

10.

What is energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

The ability to do work.

11.

The unit of work is

a)

watt

b)

hertz

c)

joule

d)

pascal

12.
Where does most of the energy go in this transformation.
a)
Electrical energy
b)
Light
c)
Heat
d)
other
13.

The energy efficiency shown in this diagram is:

a)

About 10%.

b)

About 30%.

c)

About 60%.

d)

Impossible to tell.

14.

What is Conduction?

a)

When heat is passed from particle to particle through an object.

b)

When particles get heated, expand, and become less dense.

c)

When heat transfers by waves through empty space.

15.

Is this item a conductor or insulator?

a)

conductor

b)

insulator

16.
Heat is transferred from one particle of matter to another without the movement of matter itself in a process called
a)
conduction.
b)
convection.
c)
radiation.
d)
insulation.
17.

The water is heated strongly at the top, but the ice only melts very slowly. Why does the ice melt so slowly?

a)

Thermal energy always travels upwards.

b)

Hot water is more dense than cold water.

c)

Metal gauze does not allow heat to pass through.

d)

Water is a poor thermal conductor.

18.

Between which two points is the substance changing from a liquid to a gas?

a)

Q and R

b)

R and S

c)

S and T

19.

The gees fly 23 Km/hr to the south when they migrate for the winter.

a)

speed

b)

velocity

c)

acceleration

20.
What is the person doing from 5 seconds to 10 seconds?
a)
Walking 
b)
Running
c)
Standing Still 
d)
Walking Fast
21.
What is this graph showing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Deceleration (slowing down)
d)
No motion
22.
A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?
a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
23.

A measure of the quantity of matter is

a)

density.

b)

weight.

c)

volume.

d)

mass.

24.
An eraser has a mass of 4g and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
25.
a)
Series circuit
b)
Incomplete circuit
c)
Parallel circuit
d)
Power source
26.
The flow of electricity through a conductor
a)
Battery
b)
Current
c)
Static electricity
d)
Switch
27.
a)
Parallel circuit
b)
Series circuit
c)
Incomplete circuit
d)
Switch
28.
An electrical force which occurs as electrons are built up in an object
a)
Complete circuit
b)
Static electricity
c)
Power source
d)
Load
29.
The tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light.
a)
Voltage
b)
Current
c)
Resistance
d)
Circuit 
30.

Which of the following is the SI unit for electric current?

a)

Ohm

b)

Watt

c)

Ampere

d)

Volt

31.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
32.

What quantity does the instrument shown measure?

a)

Temperature

b)

Force

c)

Time

d)

Volume

33.
The application of scientific knowledge of materials and processes to benefit people is also known as...
a)
technology
b)
model
c)
society
d)
project
34.
Which direction will the heat flow while this person holds a hot cup of tea?
a)
from the cup to her hand
b)
from her hand to the cup
c)
no heat is transferred
35.

Claim: Carbon dioxide (CO2) emissions can be reduced by increasing the amount of electricity produced by wind.

Which pair of graphs, showing data for CO2 emissions and wind production of electricity would support this claim?

a)
b)
c)
d)
36.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move in both directions. 
37.

To use an LED, you need to connect it in a circuit with a...

a)

resistor

b)

capacitor

c)

transistor

d)

inductor

38.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
39.

A vernier calliper is sued to measure the

a)

length of a football pitch

b)

diameter of a coin

c)

volume of a liquid

40.

If a kettle has a power rating of 5 kW is used for 2 hours every day for a week, how many units of electricity are used?

a)

14 kWh

b)

49 kWh

c)

140 kWh

d)

70 kWh

41.

In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N.What is the resultant force?

a)

50N to the left.

b)

350N to the right.

c)

350N to the left.

d)

50N to the right.

42.

Which of the following is an example of a contact force?

a)

Electrostatic force (静电力）

b)

Magnetic force

c)

Frictional force

d)

Gravitational force

43.

Force does not change the ______ of the object.

a)

speed

b)

direction

c)

shape and size

d)

mass

44.

LED will work only if it is connected to a battery in

a)

Forward biased

b)

Reverse biased

c)

Both case

d)

Without battery

45.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
d)
It depends
46.
Read this scientific instrument to the nearest tenth. 
a)
6.3 mL
b)
6.6 mm
c)
6.6 mL
d)
6.3 mm
47.
Velocity is both ____ and _____. 
a)
speed , direction 
b)
direction, mass
c)
volume, density 
d)
direction, magnitude 
48.

If the original length of a spring is 20 cm and its extended length is 30 cm. What is the extension?

a)

20 cm

b)

30 cm

c)

50 cm

d)

600 cm

e)

10 cm

49.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
50.
You do 90 joules of work in 30 seconds. How much power have you generated?
a)
30 watts
b)
3 watts
c)
120 watts
d)
270 watts
51.

Unit of Force?

a)

Newton

b)

Metre

c)

Kilogram

d)

Joule

52.

SI unit of time?

a)

Second

b)

Hour

c)

Minute

d)

Millisecond

53.

SI Unit of mass?

a)

Tonne

b)

Kilogram

c)

ounce

d)

gram

54.

SI Unit of length?

a)

metre

b)

centimetre

c)

millimetre

d)

Foot

55.

Unit of time?

a)

second

b)

millisecond

c)

year

d)

light year

56.

Unit of area?

a)

metre squared

b)

metre cubed

c)

centimetre squared

d)

centimetre cubed

57.

Unit of volume?

a)

metre squared

b)

metre cubed

c)

centimetre squared

d)

centimetre cubed

58.

Unit of area?

a)

m2

b)

m3

c)

cm2

d)

cm3

59.

Unit of volume?

a)

m2

b)

m3

c)

cm2

d)

cm3

60.

Unit of density?

a)

gram per centimetre cubed

b)

gram per metre squared

c)

kilogram per metre squared

d)

gram cubed

61.

Unit of density?

a)

g/cm3

b)

g cm-2

c)

g/cm2

d)

g cm-3

62.

Unit of density?

a)

kg/m3

b)

kg cm-2

c)

kg/cm2

d)

kg m-3

63.

Equation for calculating density (ρ) is...

Note: 'ρ' is a Greek letter called 'rho' and is often used to represent density.

a)

ρ = mass/volume

b)

ρ = mass x volume

c)

ρ = volume/mass

d)

ρ = volume + mass

64.

Equation for calculating the area (A) of a circle is...

a)

A = πr2

b)

A = πr3

c)

A = 2πr

d)

A = 2πr3

e)

A = π + r

65.

Unit of volume?

a)

ml

b)

cm3

c)

m3

d)

cm2

66.

A kilometre is longer than a mile. True or False

a)

True

b)

False

67.

A formula for finding the area of a square is A = l x w. True or False

a)

True

b)

False

68.

A formula for finding the volume of a block is A = l/w x h. True or False

a)

True

b)

False

69.

The formula for calculating density is D = M/V. True or False

a)

True

b)

False

70.

The density of a substance is the mass per unit volume of the substance. True or False

a)

True

b)

False

71.

The amount of space an object takes up is known as its volume. True or False

a)

True

b)

False

72.

If an object sinks in a liquid into which it is placed, then the object is denser than the liquid. True or False

a)

True

b)

False

73.

If an object sinks in a liquid into which it is placed, then the liquid is denser than the object. True or False

a)

True

b)

False

74.

In the diagram shown, which liquid has the greatest density?

a)

Oil

b)

Water

c)

Mercury

75.

The symbol for the kilogram, the unit of mass, is...

a)

kg

b)

Kg

c)

ki

d)

K

76.

A rectangular block of iron with length 3 cm, width 2 cm and height 2 cm has a mass of 96 g. The density of the iron in g cm-3 is...

a)

8

b)

768

c)

0.125

d)

108

77.

A student (perhaps you!) used a balance and a graduated cylinder containing water to find the density of a small stone. Your results were as follows:


mass of the stone = 20 g

original volume of water in cylinder = 30 cm3

volume of stone and water = 38 cm3

What was the density of the stone in g cm-3?

a)

0.4

b)

160

c)

2.5

d)

0.29

78.

A block has a density of 50 g cm-3 and a volume of 100 cm3. The mass of the block is...

a)

0.5 g

b)

500 g

c)

5000 g

d)

2 g

79.

A rectangular block with dimensions 8 cm x 5 cm x 3 cm has a mass of 1440 g. Will this block float when placed in water?

a)

Yes

b)

No

80.

A piece of aluminium with a mass of 81 g displaces 30 cm3 of water out from an overflow can when placed in it. The density of aluminium, in g/cm3, is...

a)

0.37

b)

2.7

c)

51

d)

2430

81.

Gold has a density of 19.32 g cm-3. Calculate the mass of a cube of gold which has a length of 2.0 cm.

a)

2.42 g

b)

38.64 g

c)

17.32 g

d)

154.56 g

82.

The number of s in 34 ms is...

a)

0.034

b)

34000

c)

0.34

d)

3400

83.
What safety symbol is this? 
a)
biohazard
b)
radiation
c)
toxic
d)
corrosive
84.

What does this GHS hazard symbol mean?

a)

Dangerous to the environment

b)

Health hazard

c)

Oxidising

d)

Corrosive

85.
Helping to clean up the lab or classroom is the job of
a)
old students.
b)
transfer students.
c)
each and every student.
d)
only the teacher.
86.

What does this hazard GHS symbol mean?

a)

Flammable

b)

Oxidising Substance

c)

Gases Under Pressure

d)

Explosive

87.

What does this GHS hazard symbol mean?

a)

Flammable

b)

Explosive

c)

Oxidising Agent

d)

Corrosive

88.

What does this GHS hazard symbol mean?

a)

Toxic

b)

Carcinogenicity

c)

Poisonous

d)

Radioactive

89.
Which symbol means it will speed up the development of fire, causing things to burn more easily?
a)
Top right 
b)
Top left
c)
Bottom right
d)
Bottom left
90.

What does this GHS hazard symbol mean?

a)

Radioactive

b)

Carcinogenicity/ Aspiration Hazard

c)

Toxic

d)

Explosive

91.

Which of these symbols means: Explosive?

a)
Top right
b)
Top left
c)
Bottom right
d)
Bottom left
92.
Identify the equipment shown here:
a)
measuring cylinder
b)
conical flask
c)
beaker
d)
volumetric flask
93.

Identify the equipment shown here:

a)

tubular beakers

b)

measuring flasks

c)

volumetric decanters

d)

graduated cylinders

94.
Identify the equipment shown here:
a)
beaker holder
b)
iron ring
c)
forceps
d)
test tube holder
95.
Identify the equipment shown here:
a)
wire gauze
b)
flame spreader
c)
sieve
d)
mesh
96.
Identify the equipment shown here:
a)
test tube holder
b)
iron rod
c)
iron ring
d)
clamp stand
97.

Identify the equipment shown.

(a)  

98.
Name the tool pictured
a)
Pipette
b)
Eye dropper
c)
Tweezer
d)
Forceps
99.

Identify the equipment shown here:

a)

concave glass

b)

evaporating dish

c)

clock glass

d)

glass disc

100.
Identify the equipment shown here:
a)
crucible
b)
evaporating dish
c)
mortar and pestle
d)
bowl
101.
Identify the equipment shown here:
a)
grinder
b)
evaporating dish
c)
mortar and pestle
d)
crucible
102.
Identify the equipment shown here:
a)
crucible holder
b)
wire gauze
c)

pipeclay triangle

d)
test tube holder
103.
Name this lab apparatus:
a)
forceps
b)
filter funnel
c)
mortar and pestle
d)
clay triangle
104.

What is measured with a graduated cylinder?

a)

Mass of a substance

b)

Density of a substance

c)

Weight of an object

d)

Volume of liquid

105.

Name the lab apparatus shown.

(a)  

106.

A small cylindrical glass used to strongly heat substances in the flame of a Bunsen burner.

a)

boiling tube

b)

test tube

c)

liquid tube

d)

heat tube

107.

A three-legged platform used to support flasks and beakers. What is it?

(a)  

108.

What is this science apparatus?

a)

Pipette rack

b)

Test tube rack

c)

Test tube holder

d)

Burette holder

109.

The laboratory apparatus above are used to measure _____________ .

a)

mass

b)

length

c)

volume

d)

temperature

110.

What is the primary reason metals are good conductors of electricity?

a)

They are malleable and ductile.

b)

They are shiny and reflective.

c)

They have a high density.

d)

They have free electrons that move easily.

111.

Which of the following is an example of a non-renewable energy source?

a)

Wind energy

b)

Hydroelectric power

c)

Solar energy

d)

Coal

112.

What is the main function of a resistor in an electrical circuit?

a)

To increase the current

b)

To decrease the voltage

c)

To limit the flow of current

d)

To store electrical energy

113.
Volume is 
a)
the amount of space an object takes up.
b)
the amount of matter in an object.
c)
the distance from one point to another.
d)
the amount of heat in a substance.
114.

The Basic unit for measuring length in the Metric system

a)

Meter

b)

Liter

c)

inches

d)

yards

115.

What is mass?

a)

How much SPACE something takes up.

b)

How big something is.

c)

How much of something there is.

116.

A solid piece of plastic has a density of 1.5g/cm3. Will it FLOAT or SINK in water?

a)

Float

b)

Sink

117.

What is the energy conversion when you plug in a stereo and listen to music?

a)

electrical to mechanical

b)

chemical to heat

c)

electrical to sound

d)

potential to sound

118.

What is the energy conversion when you put batteries in a flashlight to make it turn on?

a)

chemical to light

b)

light to kinetic

c)

chemical to thermal

d)

nuclear to light

119.

What is the energy conversion when photosynthesis takes place as the sun makes a plant grow?

a)

thermal to chemical

b)

potential to nuclear

c)

chemical to potential

d)

light to chemical

120.

Fossil fuels _______________________________. That means there is a limited supply. Once the world runs out, there is no way to get more.

a)

are clean-burning

b)

are non-renewable resources

c)

came to Earth on comets

d)

are found in fossilized sea shells

121.

Where on the track does the roller coaster train have the greatest potential energy?

a)

Point 1

b)

Point 2

c)

Point 3

d)

Point 4

e)

Point 5

122.

What is energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

The ability to do work.

123.

The unit of work is

a)

watt

b)

hertz

c)

joule

d)

pascal

124.
Where does most of the energy go in this transformation.
a)
Electrical energy
b)
Light
c)
Heat
d)
other
125.

The energy efficiency shown in this diagram is:

a)

About 10%.

b)

About 30%.

c)

About 60%.

d)

Impossible to tell.

126.

What is Conduction?

a)

When heat is passed from particle to particle through an object.

b)

When particles get heated, expand, and become less dense.

c)

When heat transfers by waves through empty space.

127.

Is this item a conductor or insulator?

a)

conductor

b)

insulator

128.
Heat is transferred from one particle of matter to another without the movement of matter itself in a process called
a)
conduction.
b)
convection.
c)
radiation.
d)
insulation.
129.

The water is heated strongly at the top, but the ice only melts very slowly. Why does the ice melt so slowly?

a)

Thermal energy always travels upwards.

b)

Hot water is more dense than cold water.

c)

Metal gauze does not allow heat to pass through.

d)

Water is a poor thermal conductor.

130.

Between which two points is the substance changing from a liquid to a gas?

a)

Q and R

b)

R and S

c)

S and T

131.

The gees fly 23 Km/hr to the south when they migrate for the winter.

a)

speed

b)

velocity

c)

acceleration

132.
What is the person doing from 5 seconds to 10 seconds?
a)
Walking 
b)
Running
c)
Standing Still 
d)
Walking Fast
133.
What is this graph showing?
a)
Constant Speed
b)
Acceleration (speeding up)
c)
Deceleration (slowing down)
d)
No motion
134.
A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?
a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
135.

A measure of the quantity of matter is

a)

density.

b)

weight.

c)

volume.

d)

mass.

136.
An eraser has a mass of 4g and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
137.
a)
Series circuit
b)
Incomplete circuit
c)
Parallel circuit
d)
Power source
138.
The flow of electricity through a conductor
a)
Battery
b)
Current
c)
Static electricity
d)
Switch
139.
a)
Parallel circuit
b)
Series circuit
c)
Incomplete circuit
d)
Switch
140.
An electrical force which occurs as electrons are built up in an object
a)
Complete circuit
b)
Static electricity
c)
Power source
d)
Load
141.
The tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light.
a)
Voltage
b)
Current
c)
Resistance
d)
Circuit 
142.

Which of the following is the SI unit for electric current?

a)

Ohm

b)

Watt

c)

Ampere

d)

Volt

143.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
144.

What quantity does the instrument shown measure?

a)

Temperature

b)

Force

c)

Time

d)

Volume

145.
The application of scientific knowledge of materials and processes to benefit people is also known as...
a)
technology
b)
model
c)
society
d)
project
146.
Which direction will the heat flow while this person holds a hot cup of tea?
a)
from the cup to her hand
b)
from her hand to the cup
c)
no heat is transferred
147.

Claim: Carbon dioxide (CO2) emissions can be reduced by increasing the amount of electricity produced by wind.

Which pair of graphs, showing data for CO2 emissions and wind production of electricity would support this claim?

a)
b)
c)
d)
148.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move in both directions. 
149.

To use an LED, you need to connect it in a circuit with a...

a)

resistor

b)

capacitor

c)

transistor

d)

inductor

150.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
151.

A vernier calliper is sued to measure the

a)

length of a football pitch

b)

diameter of a coin

c)

volume of a liquid

152.

If a kettle has a power rating of 5 kW is used for 2 hours every day for a week, how many units of electricity are used?

a)

14 kWh

b)

49 kWh

c)

140 kWh

d)

70 kWh

153.

In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N.What is the resultant force?

a)

50N to the left.

b)

350N to the right.

c)

350N to the left.

d)

50N to the right.

154.

Which of the following is an example of a contact force?

a)

Electrostatic force (静电力）

b)

Magnetic force

c)

Frictional force

d)

Gravitational force

155.

Force does not change the ______ of the object.

a)

speed

b)

direction

c)

shape and size

d)

mass

156.

LED will work only if it is connected to a battery in

a)

Forward biased

b)

Reverse biased

c)

Both case

d)

Without battery

157.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
d)
It depends
158.
Read this scientific instrument to the nearest tenth. 
a)
6.3 mL
b)
6.6 mm
c)
6.6 mL
d)
6.3 mm
159.
Velocity is both ____ and _____. 
a)
speed , direction 
b)
direction, mass
c)
volume, density 
d)
direction, magnitude 
160.

If the original length of a spring is 20 cm and its extended length is 30 cm. What is the extension?

a)

20 cm

b)

30 cm

c)

50 cm

d)

600 cm

e)

10 cm

161.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
162.
You do 90 joules of work in 30 seconds. How much power have you generated?
a)
30 watts
b)
3 watts
c)
120 watts
d)
270 watts
163.

the volume of irregular object is

a)

25 cm3

b)

50 cm3

c)

75 cm3

d)

125 cm3

164.
Read this scientific instrument to the nearest tenth. 
a)
6.3 mL
b)
6.6 mm
c)
6.6 mL
d)
6.3 mm
165.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
166.

What quantity does the instrument shown measure?

a)

Temperature

b)

Force

c)

Time

d)

Volume

167.

What units are used by the instrument shown?

a)

m/s

b)

N

c)

oC

d)

S

168.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
169.
An object with which of the following densities will float on water?
a)
0.7 g/cm3
b)
1.2 g/cm3
c)
3.5 g/cm3
d)
11.4 g/cm3
170.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
171.
Dave runs a 400 m race with a speed of 4 m/s. What time will it take him to finish the race?
a)
400 minutes
b)
100 minutes
c)
100 seconds 
d)
.25 seconds 
172.
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
173.

What is the unit of Electrical Power?

a)

Joule

b)

Watt

c)

Where

d)

Amp

174.

Calculate the voltage applied when a 60 watt light-bulb uses a current of 5 amps

a)

300 volts

b)

30 volts

c)

12 volts

d)

0.08 volts

175.
What force causes an extension of 5 cm?
a)
0.8 N
b)
1.2 N
c)
1.0 N
d)
0.9 N
176.

Ohms Law states that voltage and current are directly proportional to each other. Which graph best represents a material behaving according to Ohm's law?

a)
b)
c)
d)
177.
Find the surface area of the rectangular prism.
a)
94 cm. squared
b)
60 cm. squared
c)
12 cm. squared
d)
19 cm. squared
178.
Does this table represent a proportional relationship?
a)
Yes
b)
No
179.
The application of scientific knowledge of materials and processes to benefit people is also known as...
a)
technology
b)
model
c)
society
d)
project
180.

It is a branch of Physics that studies the nature and behavior of light.

a)

Optics

b)

Nuclear Physics

c)

Thermodynamics

d)

Quantum Mechanics

181.

He is the one who invented the telescope.

a)

Isaac Newton (1643-1727)

b)

Galileo Galilei (1564-1642)

c)

Albert Einstein (1879-1955)

d)

James Clerk Maxwell (1831-1871)

182.

She is the first ever female scientist to win a Nobel Prize for discovering radioactivity.

a)

Paul Dirac (1902-1984)

b)

Richard Feynman (1918-1988)

c)

Marie Curie (1867-1934)

d)

Michael Faraday (1791-1867)

183.
What kind of circuit is this?
a)
series
b)
parallel
184.

LDR means

a)

Light Dependent Resistor

b)

Light Device Regulator

c)

Low Drive Resistor

185.

Choose the correct symbol for this component!

a)
b)
c)
d)
186.

Name this component

a)

resistor

b)

LED

c)

cell

d)

switch

187.

What reduces the electric current in a circuit?

a)

Circuit

b)

Resistance

c)

Electron

d)

Current

188.

What is this the electrical symbol for?

a)

Buzzer

b)

Switch

c)

Battery

d)

Resistor

189.

The circuit shown was used by a student to verify Ohms Law. Name the instrument labelled V

a)

Voltmeter

b)

Ammeter

c)

Voltameter

d)

Ohmmeter

190.
Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?
a)
Chemical to light
b)
Electrical to chemical
c)
Electrical to light
d)
Chemical to electrical
191.
The diagram shows a complete circuit with a battery and a buzzer making noise. This circuit works by transforming -
a)
chemical energy to electrical to sound.
b)
electrical energy to thermal to light.
c)
sound energy to electrical to chemical.
d)
mechanical energy to electrical to sound.
192.
Which energy conversion is taking place when you put gasoline in a car?
a)
thermal -> electrical
b)
mechanical -> electrical
c)
chemical -> mechanical
d)
mechanical -> electromagnetic
193.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
194.
The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?
a)
thermal to light
b)
gravitational to potential
c)
radiant to electrical
d)
chemical to light
195.
Where does most of the energy go in this transformation.
a)
Electrical energy
b)
Light
c)
Heat
d)
other
196.
Where does most of the energy go for this transformation.
a)
heat
b)
electrical
c)
light
d)
joules
197.

Earth’s nearest star (our Sun) radiates this type of energy.

a)

Solar

b)

Coal

c)

Propane

d)

Oil

198.

What is the efficiency of a machine if 55.3 J of energy are consumed by the machine, but only 14.3 J of useful energy is produced by the machine?

a)

0.25 J

b)

26%

c)

386%

d)

3.86 J

199.
Which direction will the heat flow while this person holds a hot cup of tea?
a)
from the cup to her hand
b)
from her hand to the cup
c)
no heat is transferred
200.

What kind of energy does an object possess when it's resting on top of the hill?

a)

Potential Energy

b)

Chemical Energy

c)

Kinetic Energy

d)

All of the above

201.

what is hydroelecrical power generation

a)

a source of energy that can be replaced in a relatively short period of time

b)

a source of energy that cannot be replaced as quickly as it is used

c)

the generation of electrical power using a source of moving water

d)

a non - renewable source

202.

Claim: the consumption of natural resources by humans has a negative impact on the environment. What data would provide evidence for this claim?

a)

Increased human lifespan and increased ice cap size

b)

Increased human population and decreased habitats for plants and animals

c)

Increased consumption of resources by humans and increased biodiversity (variety) in nature

d)

Increased of fossil fuel burning by humans and decreased use of other resources

203.

Some factories that burn coal produce smoke with harmful chemicals, such as sulfur. Scrubbers are devices that are attached to the smokestacks to reduce the amount of sulfur put into the atmosphere. To evaluate the effectiveness of these devices, what data would need to be collected?

a)

The average amount of sulfur in a certain amount of coal

b)

The amount of coal a factory burns each year and how much sulfur it emits (produces)

c)

The increase in the use of scrubbers by factories that burn coal

d)

The amount of sulfur emitted (produced) by a smokestack before and after the scrubber is attached

204.

Claim: Carbon dioxide (CO2) emissions can be reduced by increasing the amount of electricity produced by wind.

Which pair of graphs, showing data for CO2 emissions and wind production of electricity would support this claim?

a)
b)
c)
d)
205.

What is sustainability?

a)

Indicators

b)

Planning for future generations to use all of all the resources.

c)

Meeting the needs of the present.

d)

Meeting the needs of the present without compromising the needs of future generations.

206.

Which of the following would conserve energy and protect the environment and is also good working practice

a)

Buy materials from the cheapest country

b)

Transport materials by air

c)

Use lighter materials

d)

Reduce transport costs

207.

What energy conversion is occurring fro A to B to C in the diagram shown.

a)

Light to Heat to Kinetic

b)

Kinetic to Heat to Light

c)

Heat to Kinetic to Light

d)

Heat to Light to Kinetic

208.

Which bulb is more efficient at transforming electrical energy to light energy?

a)
b)
209.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move in both directions. 
210.
This type of force resist motion between two surfaces that are pressed together
a)
contact
b)
gravity
c)
friction
211.

To use an LED, you need to connect it in a circuit with a...

a)

resistor

b)

capacitor

c)

transistor

d)

inductor

212.

What is ohm?

a)

Measures electrical resistance

b)

Measure electricity

c)

Bob esponja

d)

Measues circuits

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