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Physical Science Semester 1 Exam

Total questions: 101

Worksheet time: 51mins

Name
Class
Date
1.

How well a measurement is known, how uncertain it is

a)

Precision

b)

Volume

c)

Density

d)

Inference

e)

Evidence

2.

One possible conclusion that is supported by evidence

a)

Precision

b)

Volume

c)

Density

d)

Inference

e)

Evidence

3.

The amount of space an object takes up: aka it’s size

a)

Mass

b)

Volume

c)

Density

d)

Inference

e)

Evidence

4.

Data or observations used to support an idea

a)

Precision

b)

Volume

c)

Density

d)

Inference

e)

Evidence

5.

The amount of matter (stuff) in something

a)

Mass

b)

Volume

c)

Density

d)

Inference

e)

Evidence

6.

The amount of matter IN a SPECIFIC amount of space

a)

Mass

b)

Volume

c)

Density

d)

Inference

e)

Evidence

7.

A prediction or explanation without a lot of evidence (yet)

a)

Mass

b)

Volume

c)

Hypothesis

d)

Inference

e)

Evidence

8.

You want to measure the volume of a glass of milk. Which of the following METRIC units would be the most appropriate to do this?

a)

Milligrams (mg)

b)

Ounces (oz)

c)

Centimeters (cm)

d)

Kiloliters (kL)

e)

Milliliters (mL)

9.

1 milliliter (mL) is the exact same as

a)

1 cubic centimeter (cm³)

b)

1 millimeter (mm)

c)

1 centimeter (cm)

d)

1 cubic meter (m³)

10.

Which of the following is NOT a metric (SI) unit?

a)

meter

b)

pound

c)

second

d)

gram

e)

none of these

11.

The metric base unit used to measure length is a _______________.

a)

b. meter

b)

a. liter

c)

c. gram

d)

d. second

12.

The reading on the following centimeter ruler is best given by:

a)

23 cm

b)

23.5 cm

c)

20.35 cm

13.

To the left is a 10 mL graduated cylinder with some liquid in it. What is the volume of liquid in the graduated cylinder?

a)

5.70 mL

b)

4.3 mL

c)

4.38 mL

d)

4.6 mL

14.

The number 149,000,000 is usually written in scientific notation as

a)

0.149 x10^9

b)

1.49 x10^8

c)

149 x 10^6

d)

1490 x 10^5

15.

True or False: All scientists use the same method for all scientific endeavors.

a)

True

b)

False

16.

What is the mass of the solution when 1 kg of salt is dissolved in 20 kg of water?

a)

More than 21 kg.

b)

21 kg.

c)

Between 20 and 21 kg.

d)

20 kg.

e)

Less than 20 kg.

17.

What is your height in centimeters if you are 0.002km tall?

a)

2 cm

b)

200 cm

c)

2000 cm

d)

0.02 cm

e)

0.2 cm

18.

How many milliliters is 0.005 L?

a)

0.5 mL

b)

5 mL

c)

0.50 mL

d)

0.000005 mL

e)

200 mL

19.

Of the three boxes, which one has the largest volume?

a)

X

b)

Y

c)

Z

d)

Both Z and Y

e)

Can't tell from the information given

20.

What is 5.96 x 10^5 in standard notation (not in scientific notation)?

a)

0.00000596

b)

596,000

c)

5,960,000

d)

59,600,000

21.

How many meters is 76 km?

a)

76,000 m

b)

7,600 m

c)

760 m

d)

0.076 m

e)

0.76 m

22.

What is 0.000062 in scientific notation?

a)

6.2x10−46.2 x 10^{-4}

b)

6.2x10−56.2 x 10^{-5}

c)

6.2x1046.2 x 10^4

d)

6.2 x 10^5

23.

On the right is a cylinder containing water. An object with a mass of 21 g and a volume of 15 mL is lowered into the water. The water level changes, so what will the new water level read?

a)

41 mL

b)

47 mL

c)

38 mL

d)

11 mL

e)

None of these are correct

24.

How many liters is 840 mL?

a)

84000 L

b)

8400 L

c)

84 L

d)

8.4 L

e)

0.84 L

25.

Total length of path traveled or an object moved.

a)

Displacement

b)

Speed

c)

Velocity

d)

Acceleration

e)

Distance

26.

The distance the object travels in one unit of time

a)

Displacement

b)

Speed

c)

Velocity

d)

Acceleration

e)

Distance

27.

The rate of change of velocity divided by the time it took for the change to occur.

a)

Displacement

b)

Speed

c)

Velocity

d)

Acceleration

e)

Distance

28.

The change in position of an object. vector quantity

a)

Displacement

b)

Speed

c)

Velocity

d)

Acceleration

e)

Distance

29.

A push, pull, or twist

a)

Displacement

b)

Speed

c)

Velocity

d)

Acceleration

e)

Force

30.

Mass x velocity

a)

Momentum

b)

Speed

c)

Velocity

d)

Acceleration

e)

Force

31.

The scientific unit of forces.

a)

Newtons

b)

Speed

c)

Velocity

d)

Acceleration

e)

Force

32.

an object’s resistance to changing its motion.

a)

Newtons

b)

Friction

c)

Velocity

d)

Acceleration

e)

Inertia

33.

a force that opposes the motion of an object when two surfaces are in contact, essentially acting against the direction of movement.

a)

Newtons

b)

Friction

c)

Velocity

d)

Acceleration

e)

Inertia

34.

Speed in a given direction; vector

a)

Newtons

b)

Speed

c)

Velocity

d)

Acceleration

e)

Force

35.

What is the unit of speed in the International System of Units (SI)?

a)

kilometer

b)

meter/second

c)

meter

d)

hour

36.

Which of the following best describes displacement?

a)

The total distance traveled

b)

The amount of time taken

c)

The change in position from the starting point

d)

The speed at which an object is moving

37.

If the slope of a distance vs. time graph is a straight line, what does it indicate about the object's motion?

a)

The object is accelerating

b)

The object is at rest

c)

The object has a constant speed

d)

The object is moving backward

38.

When is an object's velocity considered constant?

a)

When its speed is increasing

b)

When its speed is decreasing

c)

When its speed and direction remain unchanged

d)

When it is standing still

39.

What does a horizontal line on a distance vs. time graph indicate?

a)

The object is accelerating

b)

The object is moving backward

c)

The object is moving at a constant speed

d)

The object is not changing its position

40.

A boy lets go of a feather. The feather is acted upon directly downward by the force of gravity with 5 Newtons and by the force of air resistance in the opposite direction (upwards) with 2 Newtons. The net force on the feather is

a)

3 Newtons upward

b)

8 Newtons downward

c)

3 Newtons downward

d)

8 Newtons upward

41.

A satellite in deep space is on a mission to Neptune. It fires its engines to change its velocity toward Neptune at a speed of 200 kilometers per hour. Suddenly, the engines stop working. After a few minutes, what is the velocity of the satellite?

a)

100 kilometers per hour, towards Neptune

b)

200 kilometers per hour, towards Earth

c)

100 kilometers per hour, towards Earth

d)

200 kilometers per hour, towards Neptune

42.

The momentum of a falling rock is found to be 200 kg·m/s. What is the mass of the rock if it falls with a velocity of 5.0 m/s? p = m x v

a)

40 kg

b)

1000 kg

c)

0.025 kg

d)

205 kg

43.

During the Running of the Bulls in Spain, Evan Wolf (mass = 85 kg) gains a momentum of 250 kg·m/s as he attempts to outrun a charging bull. How fast is Mr. Wolf running?

a)

2125 m/s

b)

2.94 m/s

c)

0.34 m/s

d)

335 m/s

44.

What is the momentum of a large rock (mass = 4.0 kg) moving at a velocity of 2.0 m/s?

a)

2.0 kg m/s

b)

6.0 kg m/s

c)

8.0 kg m/s

45.

An astronaut would weigh less on the moon than on Earth because gravity is ______ on the moon than on Earth.

a)

Stronger

b)

weaker

46.

Why does the Moon orbit Earth?

a)

There is chemical attraction between the Earth and the Moon.

b)

There is gravitational attraction between the Earth and the Moon.

c)

There is mechanical attraction between the Earth and the Moon

d)

There is magnetic attraction between the Earth and the Moon.

47.

What is the rate of acceleration due to gravity?

a)

12.2 m/s²

b)

9.5 m/s²

c)

9.8 m/s²

d)

8.6 m/s²

48.

What is the primary difference between mass and weight?

a)

Mass is measured in newtons, weight in kilograms

b)

Weight varies with gravity, mass remains constant

c)

Mass is a force, weight is a measurement

d)

They are the same thing with different names

49.

When a person jumps up, what law explains why the Earth moves slightly in the opposite direction?

a)

Law of Conservation of Energy

b)

First Law of Motion

c)

Second Law of Motion

d)

Third Law of Motion

50.

The energy stored in an object due to its height above the ground is called ___________ potential energy.

a)

Gravitational

b)

Kinetic

c)

Elastic

d)

Joule

e)

Potential

51.

When a ball is thrown into the air, at its highest point, it has maximum ________ energy.

a)

Gravitational

b)

Kinetic

c)

Elastic

d)

Joule

e)

Potential

52.

A compressed spring has _____________ potential energy.

a)

Gravitational

b)

Kinetic

c)

Elastic

d)

Joule

e)

Potential

53.

________________ energy is the energy of motion.

a)

Gravitational

b)

Kinetic

c)

Elastic

d)

Joule

e)

Potential

54.

The SI unit of energy is the ________________.

a)

Gravitational

b)

Kinetic

c)

Elastic

d)

Joule

e)

Potential

55.

The movement of energy from a warmer object to a cooler object is called _____________

a)

Convection

b)

Heat Transfer

c)

Conduction

d)

Radiation

e)

Temperature

56.

The transfer of energy through direct contact is called ____________

a)

Convection

b)

Heat Transfer

c)

Conduction

d)

Radiation

e)

Temperature

57.

_______________ is heat transfer by electromagnetic waves.

a)

Convection

b)

Heat Transfer

c)

Conduction

d)

Radiation

e)

Temperature

58.

The transfer of energy through direct contact is called ____________

a)

Convection

b)

Heat Transfer

c)

Conduction

d)

Radiation

e)

Temperature

59.

Heat transfer through fluid motion is called ____________________.

a)

Convection

b)

Heat Transfer

c)

Conduction

d)

Radiation

e)

Temperature

60.

measurement of the amount of heat in an object.

a)

Convection

b)

Heat Transfer

c)

Conduction

d)

Radiation

e)

Temperature

61.

What type of energy does a roller coaster have at the top of a hill?

a)

Kinetic Energy

b)

Gravitational Potential Energy

c)

Thermal Energy

d)

Chemical Energy

62.

Which of the following is an example of kinetic energy?

a)

A stretched rubber band

b)

A moving car

c)

A book on a shelf

d)

A battery

63.

When a pendulum swings, at which point is its potential energy the highest?

a)

At the lowest point of the swing

b)

At the midpoint of the swing

c)

At the highest point of the swing

d)

Potential energy is constant

64.

Which factor does NOT affect gravitational potential energy?

a)

Mass of the object

b)

Height of the object

c)

Speed of the object

d)

Gravitational acceleration

65.

What is the formula to calculate gravitational potential energy?

a)

KE=12mv2KE = \frac{1}{2}mv^2

b)

( PE = mgh )

c)

( F = ma )

d)

( W = Fd )

66.

Which method of heat transfer occurs when you touch a hot stove?

a)

Radiation

b)

Convection

c)

Conduction

d)

Insulation

67.

Which of the following is NOT an example of radiation?

a)

Sunlight warming your face

b)

Heat from a fireplace warming the room

c)

Heat from a stove burner warming a pot

d)

Microwaves heating food

68.

Which method of heat transfer is most efficient in a vacuum?

a)

Conduction

b)

Convection

c)

Radiation

d)

None of the above

69.

Which material is a good conductor of heat?

a)

Wood

b)

Plastic

c)

Copper

d)

Rubber

70.

5.0 g of copper was heated from 20°C to 80°C. How much energy was used to heat Cu? (Specific heat capacity of Cu is 0.092 cal/g °C) Q = m x ΔT x C

a)

27.6 cal

b)

9.2 cal

c)

60 degrees

d)

36.8 cal

71.

What is the specific heat of an unknown substance if a 2.50 g sample releases 12 calories as its temperature changes from 25°C to 20°C? Q = m x ΔT x C

a)

0.86 cal/g°C

b)

0.96 cal/g°C

c)

1.2 cal/g°C

d)

1 cal/g°C

72.

What is the formula for calculating work?

a)

Force × Distance

b)

Mass × Velocity

c)

Power × Time

d)

Energy × Speed

73.

Which of the following is a unit of power?

a)

Joule

b)

Newton

c)

Watt

d)

Kilogram

74.

If a car engine does 5000 joules of work in 10 seconds, what is its power output?

a)

500 watts

b)

50 watts

c)

5000 watts

d)

50000 watts

75.

Which scenario requires more power?

a)

Lifting a box slowly

b)

Lifting a box quickly

c)

Pushing a box on the ground

d)

Holding a box still

76.

75. In a ________ circuit, there is only one path for the current to flow.

a)

series

b)

parallel

c)

open

d)

closed

77.

76. In most atoms, the charges of the protons and electrons cancel each other out and the atom has no ______________________.

a)

overall charge

b)

mass

c)

neutrons

d)

energy

78.

77. Electric current is measured in _______________.

a)

amperes

b)

volts

c)

ohms

d)

watts

79.

Atoms become charged by gaining or losing ________________.

a)

electrons

b)

protons

c)

neutrons

d)

atoms

80.

79. In a ________ circuit, there are multiple paths for the current to travel.

a)

parallel

b)

series

c)

open

d)

closed

81.

The electric charge flows from higher to lower due to the _________________

a)

voltage difference

b)

magnetic field

c)

current flow

d)

resistance

82.

An electric field surrounds every electric charge and exerts __________ on the charge.

a)

force

b)

heat

c)

light

d)

sound

83.

The ______________ is the component that uses the electrical energy, such as a light bulb, motor, or resistor.

a)

load

b)

switch

c)

battery

d)

wire

84.

The total resistance in a series circuit is the ________ all of the resistances.

a)

sum of

b)

difference between

c)

product of

d)

average of

85.

Type of magnet that keeps its magnetic properties for a long time

a)

permanent magnet

b)

temporary magnet

c)

electromagnet

d)

bar magnet

86.

Type of magnetic poles that repel one another

a)

like poles

b)

unlike poles

c)

north-south poles

d)

neutral poles

87.

Which diagram below best represents a magnetic field between two magnetic fields?

a)

A) [Diagram]

b)

B) [Diagram]

c)

C) [Diagram]

d)

D) [Diagram]

88.

Charging by Conduction is the process of charging by:

a)

Contact

b)

Rubbing

c)

No direct contact

89.

Charging caused by rubbing an object is called

a)

Friction

b)

Conduction

c)

Induction

90.

Directing an electric charge into the ground through contact is called

a)

Grounding

b)

Wiring

c)

Conducting

91.

Which material would experience the least resistance in an electrical circuit?

a)

Copper

b)

Wood

c)

Glass

d)

Rubber

92.

Which wire diameter would have the most resistance?

a)

.5 mm

b)

1 mm

c)

2 mm

d)

3 mm

93.

An engineer is deciding which route to run the wire in a house to provide the least resistance, should he choose the longer or shorter route?

a)

Longer

b)

Shorter

94.

The temperature of the day changes the resistance in the power lines. On which day would the powerlines experience the least resistance?

a)

20° F

b)

50° F

c)

80° F

95.

Which statement is TRUE about series circuits?

a)

All parts share the same current.

b)

Each part has its own path for current.

c)

The total resistance is less than any single resistor.

d)

They never work with light bulbs.

96.

What happens to the total resistance when more resistors are added in series?

a)

It decreases.

b)

It stays the same.

c)

It increases.

d)

It disappears.

97.

In a parallel circuit with two resistors, R₁ = 4Ω and R₂ = 6Ω, what is the total resistance?

a)

2.4Ω

b)

10Ω

c)

24Ω

d)

5Ω

98.

What is the main advantage of parallel circuits over series circuits?

a)

They use less wire.

b)

If one component fails, others still work.

c)

They are more expensive.

d)

They have only one path for current.

99.

If three resistors, 2Ω, 3Ω, and 5Ω, are connected in series, what is their total resistance?

a)

10Ω

b)

5Ω

c)

3Ω

d)

2Ω

100.

What happens when you turn off the electric current in an electromagnet?

a)

It becomes stronger

b)

It stays the same

c)

It loses its magnetism

d)

It explodes

101.

Adding additional loops of wire on an electromagnet _________the strength of the electromagnetic field.

a)

Increases

b)

Decreases

c)

Does not affect

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