Font size
WorksheetsPhysical Science Semester Test
Total questions: 100
Worksheet time: 53mins
What is the part of an experiment that serves as a standard for comparison?
Control Group
Constant
Hypothesis
Variable
Unit One: A testable prediction that predicts a cause and effect relationship between variables is a(n) _____.
analysis
hypothesis
observation
inference
Where does the dependent variable go on a graph?
X-axis
Y-axis
In the Title
In the Key
Why is it advisable to use tongs when taking a beaker off a laboratory burner?
It prevents spilling.
It prevents the beaker from breaking.
It looks cool.
It allows you to move it if it is too hot.
Unit One: A factor in an experiment that changes in response to the independent variable is the _____.
constant
control group
independent variable
dependent variable
If your lab partner’s clothes catch on fire, you should first __________.
use a fire extinguisher
panic
do nothing. It will burn out eventually.
tell the teacher
All of the following are steps in the scientific method EXCEPT
observing and recording data.
forming a hypothesis.
developing a model.
discarding data that doesn’t match the hypothesis.
The best type of graph to use to show the percentages of a whole is a
Bar graph
Circle Graph
Line Graph
Scatter Graph
A factor that does NOT change in an experiment is the ______
constant
control group
dependent variable
independent variable
Which of the laws of motion states, "To every action there is an equal but opposite reaction"?
Newton’s 1st Law
Newton’s 2nd Law
Newton’s 3rd Law
Law of Conservation of Momentum
Which of the following factors does not affect air resistance?
Speed
Spin
Size
Shape
Momentum describes
How much force is needed to change an object’s motion
How much velocity changes in a given amount of time
The tendency of an object to resist a change in motion
The balanced forces on a falling object with a constant speed
Which of the following items has the most inertia?
A. A pencil
B. Your textbook
C. A water bottle
D. The teacher
Carl and Juan are playing catch. Carl throws a fastball to Juan and it hurts Juan’s hand. Why is this the case?
Greater the acceleration, greater the force
Greater the mass, greater the acceleration
Greater the acceleration, the less the force
Greater the mass, the less the force
A person is on a paddleboard. The person exerts a force on the water with the paddle, causing the water to move. The paddleboard also moves, but in the opposite direction. Which statement best explains why this happens?
Inertia
Action and reaction forces
Newton’s 2nd Law of motion
Law of Conservation of Momentum
Consider a watermelon that starts from rest and drops straight down from a tall building. Air resistance can be ignored. Which statement about the watermelon’s motion is FALSE?
The watermelon falls at a constant velocity.
The watermelon has a positive acceleration.
The watermelon’s acceleration due to gravity is 9.8 m/s².
The watermelon speeds up as it falls.
What is the weight (in Newtons) of a person with a mass of 95 kg?
9.7 N
95 N
104.8 N
931 N
An object has 16 N of force being applied to the right, 16 N of force being applied to the left, and 4 N of force being applied downward. What is the net force on the object?
36 N
4 N downward
32 N
16 N to the left
A 700 kg car is driving with an acceleration of 5 m/s² down the interstate. What is the force required to accelerate the car?
3,500 N
650 N
14 N
0.071 N
The speed you read on a speedometer is .
constant speed
average speed
velocity
2. 3 m/s north is an example of a(n) _____.
A. speed
B. velocity
C. time
D. acceleration
A car moves around a wide turn going 45 mi/hr the whole time. The car has a constant _____.
speed
velocity
direction
acceleration
If you ride your bicycle down a straight road for 500 m then turn around and ride back to your starting point, your distance is _____ your displacement.
greater than
equal to
less than
can't determine
Motion is a change in _____.
time
speed
velocity
position
An indicator that orients you when describing motion is called the __________.
time
speed
reference point
point of motion
How long will it take an object traveling at 25 m/s to reach a distance of 125 meters?
5 s
0.2 min
5 m
0.2 s
A high-speed train travels with an average speed of 227 km/hr. The train travels for 2 hrs. How far does the train travel?
113.5 km
454 km
0.0088 km
225 km
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
30 km/min
4 km/min
400 km/hr
0.25 km/min
What does the slope of a distance vs. time graph tell you?
the total distance traveled
the speed of the object
the time it took for the object to travel
the acceleration
31. The velocity of an object must include both a __________________ and a __________________.
direction and magnitude
speed and time
mass and volume
temperature and pressure
A car slowing down as it is approaching a red traffic light has a __________________ acceleration; when the light turns green, the car’s acceleration is __________________.
negative; positive
positive; negative
zero; positive
positive; zero
The _____ energy of an object increases with its height.
chemical potential
kinetic
thermal
gravitational potential
An object that has kinetic energy must be
lifted above Earth’s surface
in motion
at rest
changing direction
The law of _____ states that energy in a system can change forms but can never be created or destroyed.
conservation of energy
consecration of energy
conversion of energy
construction of energy
The kinetic energy of an object increases as its ______ increases.
height
speed
volume
potential energy
How much force is required to lift a rock a vertical distance of 8 m if 80 J of work were done?
80 J
10 J
10 N
When a ball is dropped it bounces until it eventually stops. Why does this happen?
Some of the ball’s energy is lost.
Some of the ball’s energy is converted to other forms, such as thermal and sound.
All of the ball’s energy is eventually converted to potential energy when the ball stops bouncing.
All of the ball’s energy is eventually converted to kinetic energy when the ball stops bouncing.
Energy stored in food would be considered
chemical potential
kinetic
thermal
gravitational potential
Conduction is the transfer of heat energy by_____
direct particle contact
electromagnetic waves
density differences
movement through a vacuum
An example of an energy conversion from kinetic to thermal energy would be
friction
television
flower
gravity
The mechanical energy of a coconut falling from a tree ____.
doesn’t exist
increases
decreases
remains constant
A constant force of 2.0 N is used to push a box 4.0 m across the floor. How much work is done?
6 J
8 J
12 J
24 J
The rate at which work is done is ____.
power
force
efficiency
momentum
The force or push that causes electric charges to move is called .
resistance
current
static electricity
Electric charges always flow from_____ areas to______ areas.
(a)
A material through which electrons do NOT flow easily is a(n) .
fuse
conductor
circuit breaker
Which of the following statements about electric charge is true?
Objects must be touching on another to exert electrical force.
Electrical forces act at a distance.
Air cannot conduct electricity; it is conducted only by solid materials.
Opposite electric charges always repel one another.
Mr. Robinson and his class are conducting an experiment. The class needs to choose a good insulator. Which of the following could be used as an insulator?
plastic plate
silver spoon
copper wire
gold necklace
Which of the following will increase the resistance of a wire?
using a thicker/wider wire
using a shorter wire
increasing the temperature of the wire
using silver instead of copper
What is the current produced by a 9-volt battery flowing through a resistance of 0.2 ohms?
1.8 amps
45 amps
0.022 amps
8.8 amps
Which of the following will decrease the strength of the magnetic field around a wire?
increasing the current flowing through the wire
using less loops around the iron core
flipping the direction of the current flowing through the wire
using a larger iron core
Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100 amps?
1.98 V
0.000198 V
5.050 V
100.0198 V
This contains a piece of metal that melts if it gets too hot in order to open a circuit.
conductor
insulator
fuse
circuit breaker
Identify the following material as a conductor or an insulator.
Rubber
Rubber is an insulator.
Rubber is a conductor.
Rubber is a semiconductor.
Rubber is a superconductor.
Identify the following material as a conductor or an insulator.
Metal
conductor
insulator
semiconductor
superconductor
Identify the following material as a conductor or an insulator.
Plastic
Plastic is an insulator.
Plastic is a conductor.
Plastic is a semiconductor.
Plastic is a superconductor.
Identify the following material as a conductor or an insulator.
Styrofoam
insulator
conductor
semiconductor
superconductor
Refraction occurs when a wave changes its ______ as it passes through a different medium.
color
frequency
intensity
speed
The picture to the right shows which wave behavior?
absorption
reflection
diffraction
refraction
An echo is an example of sound wave
absorption
reflection
diffraction
refraction
What is the velocity of a wave having a frequency of 25 Hz and a wavelength of 10 m?
250 m/s
2.5 m/s
35 m/s
0.4 m/s
A glass prism is able to bend light because
A. light is refracted as it enters a different medium
B. the prism creates destructive interference
C. energy is diffracted when it encounters an obstacle
D. the glass and the light’s wavelength create resonance
In 1 second, 4 crests of a wave pass a certain point. What is the wave’s frequency?
0.25 Hz
0.25 m/s
4 Hz
4 m/s
Wave A carries more energy than wave B. Wave B must have a smaller than wave A.
amplitude
wavelength
speed
In order for reflection to occur, the wave must an object.
bend around
pass through
be absorbed by
The bending of light waves as they pass through one medium to another is
refraction
rarefaction
diffraction
interference
14. A ray of light falls on the mirror pictured to the right. Which ray best describes the path of the light reflected from the mirror?
Ray A
Ray B
Ray C
Ray D
What is the matter through which a wave travels through called?
compression
amplitude
medium
frequency
Which electromagnetic wave comes from the sun to give you Vitamin D?
microwaves
X-rays
gamma rays
ultraviolet waves
Visible light waves do not diffract as well as radio waves because .
the speed of light waves is too slow
the energy of visible light is too high
the frequency of the light waves are too low
All electromagnetic waves .
have the same wavelength
have the same frequency
have the same energy
27. Gamma rays are dangerous because they
A. fluoresce
B. cause sunburn
C. can break down molecules and cells
D. cause food to spoil
Matter that has a definite volume and a definite shape is a .
liquid
gas
plasma
The amount of energy needed to change a material from a liquid to a gas is the heat of .
evaporation
fusion
condensation
When two or more substances are physically combined, the result is a(n) .
chemical change
element
compound
The air that you breathe is an example of a(n) solution.
solid
liquid
plasma
As a sample of matter is heated, its particles ________.
are unaffected
move more quickly
move more slowly
stop moving
The most common state of matter in the universe is .
Solid
Liquid
Plasma
The color of ink is a .
physical change
chemical change
chemical property
Three examples of physical changes are
sawing wood, crushing a can, and burning a marshmallow
burning of gasoline, rotting an egg, and exploding fireworks
freezing of water, evaporation of gasoline, and rusting of a nail
boiling of water, blowing up a balloon, and melting a candle
Which of the following is evidence that a physical change has occurred?
Broken glass
Rust
Bubbles
Formation of a solid precipitate
Which of the following is not a physical property?
Color
Odor
State
Reactivity with oxygen
Matter in which the particles are free to move in all directions until they have spread evenly throughout their container is a .
solid
liquid
plasma
The amount of energy needed to change a material from the solid state to the liquid state is the heat of .
condensation
vaporization
evaporation
CaCO₃ is an example of which type of matter?
Element
Compound
Homogeneous mixture
Heterogeneous mixture
In which phase of matter are the molecules of the substance farthest apart from each other?
solid
liquid
gas
crystal
A flask containing molecules of gas A and a separate flask containing molecules of gas B are both at the same temperature. Gases A and B must have equal
volumes
masses
pressures
average kinetic energies
Hydrogen, gold, and iron are all examples of
homogeneous mixtures
heterogeneous mixtures
elements
compounds
A type of matter formed by chemically joining two or more elements is known as a
compound
solution
colloid
suspension
A series of steps used by scientists to solve a problem or answer a question.
scientific method
recipe
data collection
metric system
To balance a chemical equation, it may be necessary to adjust the_______.
coefficients
subscripts
superscripts
formulas of the compound
The equation H2 + O2 🡪 H2O is unbalanced. When balanced, what is the correct coefficient for O2?
1
2
3
4
Classify the chemical reaction below.
CH3CH2OH + 3O2 🡪 2CO2 + 3H2O
double displacement
single displacement
combustion
synthesis
The sum of kinetic energy and potential energy within a system is called
thermal energy
electrical energy
chemical energy
mechanical energy
When an object (like a ball) falls, some of its__________ energy changes to________
energy, due to the law of conservation of energy.
(a)
What type of energy transfer is used for a toaster heating up waffles for breakfast.
(a)
Which of the following is not an example of a physical change?
Cutting a piece of string in half.
Freezing water into an ice cube.
Crumpling a piece of paper into a ball
Letting the food in your lunch box rot in your locker.
The law of conservation of mass states that matter ______ be created or destroyed, even after a chemical change.
can
cannot
Which of the liquids would be most viscous?
syrup
water
lemonade
soda
Where are two places that you would find plasma?
(a)
