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Physical Science Final Review

Total questions: 95

Worksheet time: 2hrs 7mins

Name
Class
Date
1.

The one variable in an experiment that is purposely changed or manipulated by the scientist is the________________.

a)

dependent variable

b)

independent variable

c)

control variable

d)

control group

2.

Research question: Does changing the brand of dog food affect how much the dog eats?


Which variable is highlighted in RED?

a)

independent

b)

dependent

c)

control

3.

The details of the experiment that need to remain UNCHANGED throughout the test are called the:

a)

predicted variables

b)

dependent variables

c)

control variables

d)

independent variables

4.
A series of steps designed to help scientists solve problems and answer questions is called
a)
hypothesis
b)
observation
c)
inquiry
d)
scientific method
5.

Which of the following is TRUE?

a)

A scientific theory is upgraded into a law once it is fully proven

b)

A scientific law explains why a certain pattern in nature occurs

c)

A commonly observed pattern or principle in nature is a "law"

d)

Most theories in science are not supported by research studies

6.

Scientists create both scientific theories and scientific laws as they make observations and conduct experiments about the natural world. Which of the following statements most accurately compares the difference between scientific theories and scientific laws?

a)

Scientific laws are based on evidence, while scientific theories are not.

b)

Scientific theories involve only biology, while laws involve all types of science.

c)

Scientific theories involve mathematical equations, while scientific laws are based on observations.

d)

Scientific theories are ideas that explain natural events, while scientific laws more reliably predict natural events.

7.

Research Question: Does the type of gasoline put in a car affect how fast the car can drive.


What is the independent variable?

a)

Type of gasoline

b)

Types of cars

c)

How fast the car can drive

d)

Amount of gas put into the car

8.

Who developed the Scientific Method?

a)

Isaac Newton

b)

Sir Francis Bacon

c)

Tycho Brahe

d)

Nicolaus Copernicus

9.
The graph shows the results of a survey to determine student's favorite pets. Why is this graph misleading?
a)
The slices are the wrong color
b)
The slices are not the correct size
c)
The percents do not add up to 100
d)
Not misleading
10.

Independent variable is the one controlled by the experimenter ex: time, date, depth, temperature.... and is placed on the _____ axis of a graph

a)

z

b)

y

c)

x

d)

not on a graph

11.
Which type of graph best displays change over continuous variables such as temperature, time, and pH?
a)
line graph
b)
bar graph
c)
climatogram
d)
pie graph
12.
Convert 3.75 kg to grams. 
a)
3750 g 
b)
375 g
c)
37.5 g
d)
3.750 g
13.

What type of relationship is shown by this graph?

a)

direct relationship

b)

inverse relationship

c)

neither direct nor inverse relationship

d)

continuous

14.
Predicting the number of days to finish when you read 40 pages is an example of:
a)
Interpolation
b)
Extrapolation
c)
An outlier
15.

Which of the following choices contain all SI units?

a)

kilograms, Fahrenheit, amperes, seconds

b)

kilograms, meters, amperes, seconds

c)

kilograms, quarts, amperes, minutes

d)

grams, meters, amperes, Inches

16.

64 cm = ____ mm

a)

6,400

b)

0.64

c)

640

d)

6.4

17.
What is the difference between weight and mass?
a)
Weight depends on gravity and mass is constant
b)
Weight depends on density and mass depends on gravity
c)
Weight depends on gravity and mass depends on volume
d)
Mass depends on gravity and weight is constant
18.

How many significant figures are in 127.500?

(a)  

19.

How many significant figures are in 9700?

(a)  

20.

Give the answer to the correct number of significant figures to

3.419 + 3.912 + 7.0518 + 0.00013

a)

14.383

b)

14.382

c)

14.3829

d)

14.38293

21.

Give the answer to the correct number of significant figures to

247.89 ÷ 53.2

a)

4.660

b)

4.65

c)

4.6595

d)

4.66

22.

How many significant figures are there in 10090 grams?

a)

1

b)

2

c)

3

d)

4

23.
Change from standard form to scientific notation: 12,000,000
a)
12.0  x  107
b)
0.12  x  107
c)
1.2  x  106
d)
1.2  x  107
24.
How would you write -5.6 x 10-3 in standard form?
a)
0.0056
b)
-5,600
c)
0.00056
d)
-0.0056
25.

Solve:

6×1062×103\frac{6\times10^6}{2\times10^3}  

a)

3 x 102

b)

3 x 109

c)

1.2 x 104

d)

3 x 103

26.

The Metric System originated in which country?

a)

England

b)

France

c)

Spain

d)

Germany

27.

How many sig figs are there? 7.000000040

a)
2
b)
6
c)
9
d)

10

28.

Round 1047.78 to three significant figures.

a)

104

b)

105

c)

1050

d)

1050.00

29.
A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?
a)
50 miles
b)
25 miles
c)
100 miles
d)
75 miles
30.

Which Greek letter symbol represents the "change in" a particular value?

a)

Alpha α\alpha

b)

Beta β\beta

c)

Delta Δ\Delta

d)

Theta θ\theta

31.

Velocity differs from speed because velocity includes:

a)

speed

b)

direction

c)

distance

d)

height

32.

Calculate the velocity of a cyclist traveling 100km south over a period of 5 hours

a)

20km/h south

b)

10km/h south

c)

10mi/h

d)

20km/h

33.

This is a velocity-time graph.  What is the object doing in segment A?

a)

Positive acceleration

b)

Negative acceleration

c)

Constant Velocity

d)

Not moving

34.

Acceleration: is the rate change in ______ over time.

a)

speed

b)

distance

c)

velocity 

d)

displacement 

35.

This is a velocity-time graph.  What is the object doing in segment B?

a)

Positive acceleration

b)

Negative acceleration

c)

Constant Velocity

d)

Not moving

36.
If you are test-driving a Bugatti Veyron and you go from 0 km/s to 124 km/s in 3.7 seconds, what was your acceleration?
a)

33.5 km/s2

b)

0.03 km/s2

c)

-33.5 km/s2

d)

-0.03 m/s2

37.
Which of the following is a unit for acceleration?
a)

km/s

b)

m/s2

c)

mi/hr

d)

m/s

38.

What does it mean when a change in velocity is negative?

a)

The object is speeding up.

b)

The object is slowing down.

c)

The object is changing direction.

d)

The object is falling down.

39.
A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?
a)
750 seconds
b)
35 seconds
c)
0.3 seconds
d)
3.3 seconds
40.
Newton’s first law of motion is also called the law of ________?
a)
Mass
b)
Inertia
c)
Force
d)
Velocity
41.
Which graph represents zero acceleration (constant velocity)?
a)
A
b)
B
c)
C
d)
D
42.

Which law best explains why more force must be applied to the bowling ball to make it accelerate at the same rate as the tennis ball?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Law of Universal Gravitation

43.

How do you get the WEIGHT of an object?

a)

Multiply the mass by gravity

b)

The mass is equal to the weight

c)

Divide the mass by gravity

d)

Add the force of gravity to the mass

44.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
45.
What is the unit for momentum?
a)

N(s)

b)

kg/sec

c)

kg/m

d)

kg m/sec

e)

N(s)

46.
A runner has a momentum of 670 kg m/s and is traveling at a velocity of 9 m/s. What is his mass?
a)
6030 kg
b)
0.0134 kg
c)
74.4 kg
d)
80 kg
47.

A roller coasters accelerates from an initial speed of 6.0 m/s to a final speed 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

48.
"For every action, there is an equal and opposite reaction."
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
49.

The SI unit for WORK is:

a)

Joules

b)

Watts

c)

Newtons

d)

Kilogram

50.

The SI unit for POWER is:

a)

Watts

b)

Joules

c)

Newtons

d)

Meters

51.

A 180 gram softball is thrown into the air using 40 J of work. The ball rises to its maximum height in 1.96 seconds. How much power was exerted throwing the ball?

a)

144 W

b)

20.4 W

c)

3.52 W

d)

2.11W

52.

Newtons (N) are the unit for __________.

a)

Work

b)

Distance

c)

Acceleration

d)

Force

53.
A girl on a motorbike passes by at a speed of 15 m/s. Her mass is 40 kg. What is her kinetic energy? 
a)
300 Joules
b)
600 Joules
c)
950 Joules
d)
4500 Joules
54.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
55.
Which character has the greatest gravitational potential energy?
a)
Character A
b)
Character B
c)
Character C
d)
Character D
56.

Energy from a compressed spring would be an example of:

a)

kinetic

b)

elastic potential

c)

gravitational potential

d)

chemical potential

57.

Energy that is stored in bonds between atoms in compounds is:

a)

Mechanical energy

b)

Chemical energy

c)

Kinetic energy

d)

Nuclear energy

58.
When does an object have no kinetic energy?
a)
when it is at rest
b)
when it is moving very slowly
c)
when the only force that is acting on it is gravity
d)
when it has no electrical charge
59.

Energy cannot be created or destroyed. But, it can be _____.

a)

transformed

b)

increased

c)

decreased

d)

evaporated

60.

What is potential energy?

a)

The energy an object has due to its atomic structure.

b)

The energy an object has due to its chemical composition.

c)

The energy an object has due to its motion.

d)

The energy an object has due to its position or condition.

61.

What is the value of the Earth's acceleration due to gravity (g)?

a)

9.8 m/s2

b)

100 m/s2

c)

25 m/s2

d)

3.14 m/s2

62.

A exercise ball is on a table 2.5 m above the ground. What is the mass of the ball if it has a GPE of 56.8 J?

a)

71 kg

b)

22.72 kg

c)

142 kg

d)

2.32 kg

63.

What would 54N be an example of?

a)

work

b)

power

c)

distance

d)

force

64.

This picture represents a diver’s motion from the top of a high diving board into a pool of water. At what point does the diver have the greatest kinetic energy and the least potential energy?

a)

1

b)

2

c)

3

d)

4

65.

What type of heat transfer is the following?

Solar panels are used to collect sunlight for energy.

a)

Convection

b)

Conduction

c)

Radiation

d)

None of the above

66.

In the following example, identify the type of heat transfer.

You hold an ice cube in your hand and it begins to melt.

a)

Radiation

b)

Convection

c)

Conduction

67.

In terms of Thermal Energy, heat will:

a)

Always flow from the warmer object when its above 50⁰C

b)

Always flow from higher temperatures to lower temperatures

c)

Always flow from lower temperatures to higher temperatures

d)

It depends on the temperature

68.

The specific heat of platinum is 150 J/kg°C. How much heat (Q) is released when a 12 kg piece of platinum cools from 100°C to 50°C?

a)

90000 J

b)

665 J

c)

-90000 J

d)

0.665 J

e)

-7500 J

69.

If 68 W of power is produced in 18 seconds, how much Work is done?

a)

1224 J

b)

0.264 J

c)

3774 J

d)

12.24 J

70.

What is the correct unit for mass in energy equations?

a)

Kilogram (Kg)

b)

Newton (N)

c)

Joule (J)

d)

Watt (W)

e)

Gram (g)

71.

What is the KE half way down the ramp?

a)

50 J

b)

25 J

c)

0 J

d)

100 J

72.

The amount of energy required to raise the temperature 1ºC for every gram or kilogram is called____?

a)

Thermal Energy

b)

Specific Heat

c)

Temperature

d)

Kinetic Energy

e)

Heat Value

73.

What is a Conductor?

a)

a material that slows the transfer of heat

b)

a material that transfers heat easily

c)

a material that is retains and measures heat transfer

d)

a material that is temperature controlled

74.

What is the total Mechanical Energy at point A?

a)

500,000 J

b)

400,000 J

c)

200,000 J

d)

50,000 J

75.
How much time is needed to produce 720 Joules of work if 90 watts of power is used? 
a)

0.125 s

b)

8 s

c)

64800 s

d)

80 s

76.

A cheetah can run briefly with a speed of 31 m/s. Suppose a cheetah with a mass of 47 kg runs at this speed. What is the cheetah’s kinetic energy?

a)

1457 J

b)

728.5 J

c)

45,167 J

d)

22,583.5 J

77.
The only charges that can move from one object to another are___________ charges.
a)
electric
b)
neutral
c)
positive
d)
negative
78.

What type of circuit is this?

a)

Series

b)

Parallel

c)

Simple

d)

None of these

79.

In a series circuit, how is the brightness of a light bulb affected when another bulb is connected?

a)

It gets brighter

b)

It stays the same

c)

It gets dimmer

d)

It goes out

80.

The unit for Current is the: 

a)

Volt

b)

Ohm

c)

Joule

d)

Amp

81.
Lightning is an example of _________.
a)
static electricity
b)
current electricity
c)
watts
d)
voltage
82.

If the light bulb in the middle burned out, what would happen to the other two?

a)

The light bulb to the left would stay lit, but the one to the right would turn off.

b)

They would both stay lit.

c)

The light bulb to the right would stay lit, but the one to the left would turn off.

d)

They would both turn off.

83.

The two main types of electrical circuits are:

a)

parallel and magnetic

b)

electromagnetic and series

c)

series and parallel

d)

series and diagonal

84.

What is the unit for Resistance?

a)

Volts (v)

b)

Amperes (A)

c)

Ohms (Ω)

d)

Joules (J)

85.

If a battery produced 12.6 Volts, what would be the current flow for a 6 Ohm resistor?

a)

2.1 Amps

b)

2.4 Amps

c)

1.71 Amps

d)

15 Amps

86.
What resistance is needed to cause a 20A current flow because of a 100V battery?
a)

0.2 Ω

b)

200 Ω

c)

120 Ω

d)

5 Ω

87.
A material in which electrons are not able to move easily 
a)
Circuit 
b)
Insulator 
c)
Resistance 
d)
Conductor
88.

The rearrangement of electrons on a neutral object caused by a nearby charged object is called:

a)

Induction 

b)

Conduction 

c)

Friction 

d)

Conductor 

89.
According to this law, the current in a circuit equals the voltage difference divided by the resistance. 
a)
Law of Conservation of Energy 
b)
Ohm's Law 
c)
Law of Conservation of Charges
d)
Newton's First Law 
90.
The potential difference that causes charges to move in a circuit is ___.
a)
voltage
b)
resistance
c)
current
d)
electric discharge
91.

In a circuit diagram, this symbol represents a

a)

switch

b)

multimeter

c)

battery

d)

globe

92.

In circuit notation, this is the symbol for:

a)

Light bulb

b)

Resistor

c)

Battery

d)

Switch

e)

Voltmeter

93.

Which of the following best explains an electric current?

a)

An electric current is the flow of positive charges in a circuit.

b)

An electric current is the flow of atoms in a circuit.

c)

An electric current is the flow of electrons in a circuit.

d)

An electric current is the flow of neutrons in a circuit.

94.
In an electrical circuit, what does this symbol represent?
a)
wire
b)
resistor
c)
lightbulb
d)
switch
95.

All of the following will INCREASE the electrical resistance EXCEPT:

a)

Using insulating materials

b)

Longer wires

c)

Larger diameter wires

d)

Higher temperatures

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