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WorksheetsFall Semester Test Review
Total questions: 124
Worksheet time: 2hrs 58mins
Name
Class
Date
1.
What is an observation
a)
recorded data
b)
research
c)
information from your senses
d)
your results
2.
Describe the experimental group.
a)
The group that stays the same
b)
the group that gets the treatment
c)
the group that is in its natural state
d)
the group that changes
3.
In a controlled experiment, how many variables can be worked with at a time?
a)
one
b)
none
c)
two or more
d)
how ever many makes sense.
4.
This variable in an experiment is the one being deliberately changed by the scientist.
a)
dependent variable
b)
independent variable
c)
data
d)
control group
5.
The factor that will happen because of the change.
a)
dependent variable
b)
independent variable
c)
controlled variabe
d)
not this one.
6.
A broad and comprehensive statement of what is thought to be true; it is supported by much evidence. It explains "why".
a)
hypothesis
b)
theory
c)
guess
d)
fact
7.
Dolphins eat the equivalent of 4 - 5% of their body mass each day. What kind of observation is this?
a)
qualitative
b)
quantitative
8.
Dolphin colors range from gray to white. What kind of observation is this?
a)
qualitative
b)
quantitative
9.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
10.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the dependent variable?
a)
Type of plant
b)
Water, apple juice, milk
c)
Plant growth
d)
Color of the plant's leaves
11.
When scientists collect data that is measurable with numbers, we call it...
a)
qualitative
b)
quantitative
c)
hypothetical
d)
graphable
12.
Data that is descriptive and uses adjectives is called...
a)
quantitative
b)
qualitative
c)
non-scientific
d)
hypothesis
13.
You want to collect data on the taste of apples to help a farmer grow sweeter apples in his orchard. You have your assistants describe apples as "sweet" or "tart". This is called ____ data
a)
quantitative
b)
qualitative
c)
not scientific
d)
hypothetical
14.
Measuring the gas mileage used over the winter versus summer months would involve the collection of ____ data.
a)
quantitative
b)
qualitative
15.
Ms. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?
a)
Distance traveled by the ball
b)
Height of the ramp
c)
Mass of the ball
d)
Where the experiment took place.
16.
Ms. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.
a)
Distance traveled by the ball
b)
Height of the ramp
c)
Mass of the ball
d)
Who set up the experiment (Ms. S, etc)
17.
The liquid in the test tube is bubbling, it must be hot. This is an example of an
a)
Observation
b)
Inference
18.
Which of the following is an inference rather than an observation?
a)
She is wearing a Iowa State shirt.
b)
He ran for 210 yards in the football game.
c)
She likes dogs since she has a dog tatoo on her arm.
d)
The weather will be stormy tomorrow.
19.
Which of the following statements is true about a THEORY
a)
A theory is a guess or hunch about something that has occurred in nature.
b)
A theory is a comprehensive set of ideas explaining a phenomenon in nature - in other words it is well tested - repeated and replicated, with peer review
c)
A theory is based on verifiable laws and can be proven true.
d)
A theory is a hypothesis that uses laws and observation to make an assumption
20.
While speaking to a colleague, a scientist makes the following statement: "I propose that Bald Eagle eggs in northern Maine will have thinner shells than those from birds in southern Alaska due to increased levels of pesticides in the water." This statement is a:
a)
Law
b)
Hypothesis
c)
Theory
21.
Scientific theories can be tested.
a)
True
b)
False
22.
Which statement below correctly identifies the difference between laws and theories?
a)
Laws describe phenomena, while theories explain why phenomena exist.
b)
Laws are a statement of fact, while theories are a statement of opinion.
c)
Laws are a prediction of phenomena, while theories are an explanation
23.
What is the control group for the hypothesis: If ice melts in salt & fresh water, then it will melt faster in salt water.
a)
The melt time
b)
The amount of salt
c)
The fresh water
d)
The amount of water
24.
Why do we want to test one variable at a time?
a)
Because it is hard to setup a data table with more
b)
To know what is causing the changes
c)
It is what has always been done
d)
No one really knows
25.
Which group is the one that does not receive the independent variable?
a)
Experimental
b)
Control
26.
Researchers performing a good experiment should base their conclusions on
a)
the original hypothesis
b)
a small sample size
c)
data from repeated trials with a large sample size
d)
results predicted before beginning the experiment
27.
A student is interested in the benefits of worms in the soil. Which charts best shows how he should conduct the experiment?
a)
Opt 1
b)
Opt 2
c)
Opt 3
d)
Opt 4
28.
What is an appropriate hypothesis for this experiment?
a)
If a snake is placed in an environment with a heated and room temperature rock he will lay on the heated rock.
b)
If a snake is placed in an environment with another snake, then the two snakes will mate.
c)
If a snake is placed in an environment with dead and living prey, then the snake will eat the living prey.
d)
If a snake is placed in an environment with glass and wire, then the snake will live surrounded by wire.
29.
What axis is the independent variable used on?
a)
Y axis
b)
quadrant 1
c)
quadrant 2
d)
X axis
30.
What can you infer about the temperature for E.coli bacterial growth?
a)
E. coli does not grow well at low and high temperatures.
b)
E coli will continue to grow at very high temperatures.
c)
E.coli grows best at very low temperatures
d)
E.coli grows best at very high temperatures.
31.
Look at the way the sea otter population changed from 1940 until 2000. If this trend continues, what do you think the population of sea otters was in 2010?
a)
Less than 20 otters
b)
More than 57 otters
c)
Between 40 - 50 otters
d)
Exactly 22 otters
32.
According to the graph below, how many more pounds of garbage was collected at Cedar Hills in 2008 than in 2004?
a)
2000 lbs
b)
2750 lab
c)
3000 lbs
d)
1000 lbs
33.
What type of graph would best represent the following data?
a)
Line graph
b)
Bar graph
c)
Circle graph
d)
Pictograph
34.
Adam is conducting a science experiment on the effect of different environments on plant growth. He put one plant in a closet and the other plant in a window at his house. He measured the growth of each plant weekly for six weeks. He then created a graph after he reviewed his data. What is the dependent variable in Adam's experiment?
a)
Total Growth of Plant.
b)
Plant Environment
c)
The Effect of Different Environments
d)
Measurement Over Six Weeks
35.
The dependent variable in this experiment is -
a)
Number of Bacteria
b)
Time of Incubation
c)
Culture Number
d)
Type of Bacteria
36.
A student conducted an experiment about the movement of a marble through four different liquid substances. Looking at the figure designed by the student, what is an error in his experiment?
a)
The amount of liquid substances used is not consistent.
b)
The type of liquid substances are not labeled correctly.
c)
The type of marble used is not consistent.
d)
The marbles are not dropped from the same distance.
37.
A student conducted an experiment on the dissolving rates of sugar in four different temperatures of water. What is missing from the figure?
a)
Units of measurement for the water temperature.
b)
Units of measurement for the dissolving rates
c)
Units of measurement for the amount of sugar
d)
Units of measurement for the amount of water
38.
Juan wanted to see if different tires would make his model car go faster. Juan correctly set up an experiment to test 4 different brands of tires on his model car. He recorded his data in the data table.
How many times did Juan conduct the experiment using Brand C tires?
How many times did Juan conduct the experiment using Brand C tires?
a)
One
b)
Two
c)
Three
d)
Four
39.
What is happening to the temperature in New York City?
a)
It is remaining about the same.
b)
It is mostly decreasing.
c)
It is mostly increasing.
d)
There is a pattern of increasing and decreasing.
40.
What is a law?
a)
Describes what happens
b)
Explains a process
41.
Laws are usually mathematically defined.
a)
True
b)
False
42.
Which statement about scientific questions is true?
a)
they should be able to be tested
b)
they should be based on belief
43.
Which of the following is a good example of a scientific question?
a)
Which kinds of metals are attracted by a magnet?
b)
Which kind of metal makes the most attractive jewelry?
c)
Will this jewelry will go on sale?
d)
Will this piece of jewelry go with my outfit?
44.
Ernst Rutherford discovered which part of the atom through the use of gold foil?
a)
Proton
b)
Neutron
c)
Electron
d)
Orbitals
45.
All matter is made of what?
a)
energy
b)
atoms
c)
electrons
d)
compounds
46.
What scientist is best known for his "Plum Pudding" model of the atom?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
47.
What is the smallest particle of an element?
a)
atom
b)
proton
c)
electron
d)
neutron
48.
An atom's overall charge is ________.
a)
positive
b)
depends
c)
neutral
d)
negative
49.
The first person to ever talk about an atom was
a)
Democritus
b)
Rutherford
c)
Dalton
50.
This contains most of the mass of an atom
a)
Electron Cloud
b)
Nucleus
c)
Electron
d)
Isotope
51.
If two atoms have the same atomic number but different numbers of neutrons, they are
a)
Ions of that element
b)
Different elements
c)
Isotopes of the same atom
d)
Isotopes of different elements
52.
The atomic number for Oxygen is 8, so
a)
there are 8 protons in the atom
b)
the atomic mass is less than 8
c)
the mass of the atom is 8
d)
the atom is decaying
53.
This particle is found in the nucleus and has no charge
a)
Neutron
b)
Proton
c)
Electron
54.
This particle is found in the nucleus and has a positive charge
a)
Electron
b)
Proton
c)
Neutron
55.
This is a negatively charged particle found outside the nucleus
a)
Electron
b)
Proton
c)
Neutron
56.
Which scientist developed the atomic theory
a)
Aristotle
b)
Dalton
c)
Democritus
57.
Contributes basically no mass to an atom.
a)
protons
b)
neutrons
c)
electrons
d)
protons and neutrons
58.
J.J. Thompson discovered the ____________. His model is called the plum pudding model which we sometimes call the chocolate chip model.
a)
proton
b)
electron
c)
neutron
d)
nucleus
59.
Ernest Rutherford discovered that the atom is
a)
Compound of mostly empty space with negative electrons surrounding a positive nucleus
b)
A highly dense sphere of positive
c)
A highly dense sphere of a negative space
d)
Composed mostly of empty space with positive electrons surrounding a negative nucleus
60.
What two particles affect the charge of an atom?
a)
Electrons & Neutrons
b)
Protons & Electrons
c)
Neutrons & Protons
61.
True or False: The majority of an atom is made up of empty space
a)
True
b)
False
62.
Niels Bohr suggested that electrons.......
a)
are found in specific orbits
b)
electrons are scattered throughout the atom
c)
electrons move according to their energy level
d)
electrons are positive
63.
How did Rutherford discover the proton?
a)
Cathode tube ray experiment
b)
Gold Foil Experiment
c)
Planetary Model
d)
Plum Pudding Model
64.
John Dalton modeled the atom as a...
a)
tiny solid sphere, with a known mass
b)
a hollow sphere
c)
a marble in the middle of a stadium
d)
planets orbiting around a star
65.
The word atom comes from a Greek word "atomos" that means
a)
Invisible
b)
Indivisible
c)
Undivided
d)
Indestructable
66.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
67.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
68.
Which of these is the proton.
a)
A
b)
B
c)
C
d)
None
69.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
70.
How many neutrons does Na have?
a)
11
b)
23
c)
22
d)
12
71.
How many protons does Calcium have?
a)
40
b)
21
c)
20
d)
41
72.
What determines an elements identity?
a)
Electrons
b)
Periodic Table
c)
Protons
d)
Atomic Mass
73.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
74.
What is the atomic mass of Neon?
a)
10
b)
20.18
c)
10.18
d)
22.18
75.
How many electrons does an Iodine atom have?
a)
53
b)
126
c)
73
d)
179
76.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
77.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
78.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
79.
What characteristic of an element's atoms ALWAYS determines the element's identity?
a)
the number of neutrons
b)
the number of protons
c)
the atomic mass
d)
the number of valence electrons
80.
Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses.
a)
protons, neutrons
b)
protons, electrons
c)
neutrons, protons
d)
electrons, protons
81.
Atomic mass - Atomic Number =
a)
protons
b)
neutrons
c)
electrons
d)
Average Mass
82.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
83.
A coil of wire acts like a magnet when __________________ flows through it.
a)
water
b)
current
c)
voltage
d)
food
84.
You can make an electromagnet stronger by: using __________________ coils of wire
a)
bigger
b)
smaller
c)
more
d)
less
85.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles.
d)
the middle.
86.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
87.
Magnets that are arranged like this will _______.
a)
move away from each other (repel)
b)
move towards each other (attract)
88.
These magnets will _______.
a)
move away from each other (repel)
b)
move toward each other (attract)
89.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
90.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
91.
What types of charges repel?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Neutral and Neutral
92.
Charged objects can be attracted to:
a)
Neutral objects
b)
Objects with the opposite charge
c)
Both
93.
Walking across a carpet is an example of charge being transferred by
a)
friction.
b)
induction.
c)
contact.
d)
static electricity
94.
The closer the charges, the ___________ the force between them
a)
closer
b)
further
c)
stronger
d)
weaker
95.
A balloon has a negative charge. The glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?
a)
The balloon will be attracted to the rod
b)
The balloon will be repelled by the rod
c)
The balloon will remain in place
d)
The balloon will spin in circles
96.
To demonstrate static electricity, a teacher takes an inflated balloon and rubs it against his hair. The rubber balloon picks up electrons from his hair, which makes his hair have
a)
a net negative charge
b)
a magnetic force
c)
a net positive charge
97.
The law of conservation of charge says
a)
charge is not created or destroyed, just transferred from object to object
b)
charge is constantly being created and destroyed
c)
charge is sometimes created and destroyed and sometimes transferred from object to object
d)
you must have an electric current to have charge
98.
The high point of a wave.
a)
crest
b)
trough
c)
amplitude
d)
wavelength
99.
The low point of a wave.
a)
crest
b)
trough
c)
amplitude
d)
wavelength
100.
__________ have the most energy of the electromagnetic spectrum.
a)
infrared waves
b)
microwaves
c)
gamma rays
d)
x-rays
101.
All waves carry ________ as they travel from one place to another.
a)
matter
b)
space
c)
energy
d)
water
102.
The distance from one point to the same point on the next wave.
a)
crest
b)
trough
c)
amplitude
d)
wavelength
103.
The electromagnetic spectrum includes only the invisible waves we can’t see.
a)
True
b)
False
104.
What might a wave do as it encounters a boundary?
a)
reflect
b)
refract
c)
absorb
d)
all of the above
105.
When a light ray bends as it passes through a lens, what type of behavior does it demonstrate?
a)
reflection
b)
refraction
c)
dispersion
d)
absorption
106.
Which is an example of a medium that waves can travel though?
a)
Water
b)
Energy
c)
Heat
d)
A stadium
107.
What kind of wave is this?
a)
Transverse Wave
b)
Longitudinal Wave
108.
What kind of wave is this?
a)
Transverse
b)
Longitudinal
109.
A sound wave moving through the air is what kind of wave?
a)
a Longitudinal
b)
water wave
c)
a transverse wave
d)
hand wave
110.
What is frequency?
a)
waves
b)
distance between equilibrium to crest
c)
hand motion
d)
The number of wave cycles completed in one second
111.
Which wave has a greater frequency?
a)
A
b)
B
112.
This image represents what kind of wave behavior?
a)
Diffraction
b)
Reflection
c)
Refraction
d)
Resonance
113.
What is the distance from point D to H called?
a)
Crest
b)
Amplitude
c)
Wavelength
d)
Frequency
114.
What kind of wave vibrates perpendicular to the direction the wave is traveling is called.....
a)
sound wave
b)
longitudinal
c)
transverse
d)
mechanical
115.
The bouncing back of a wave when it hits a surface that it cannot pass through is called......
a)
Resonance
b)
Diffraction
c)
Refraction
d)
Reflection
116.
This is the place where the wave meets the medium. It is not numbered in the diagram but is shown.
a)
Crest
b)
Trough
c)
Resting Point
d)
Amplitude
117.
A mechanical wave requires a ________.
a)
Motion
b)
Medium
c)
Vacuum
d)
Car
118.
This is the farthest away a wave can move from its resting point in either direction. Number 2 in the diagram.
a)
Crest
b)
Wavelength
c)
Trough
d)
Amplitude
119.
Which part of the wave is represented by the letter F?
a)
trough
b)
crest
c)
resting point
d)
amplitude
120.
True or False Transverse waves can travel through space as well as a medium.
a)
True
b)
False
121.
What do you call the material in which mechanical waves travel?
a)
medium
b)
transporter
c)
maximum
d)
minimum
122.
Which of the following would be considered a mechanical wave?
a)
light
b)
x-ray
c)
microwaves
d)
sound
123.
Which of the following waves would be considered an electromagnetic wave?
a)
water waves
b)
sound waves
c)
human wave
d)
radio wave
124.
Based on the diagram which wave contains the most energy?
a)
1
b)
2
c)
3
d)
4
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