WorksheetsSLT Test Review Test 1
Total questions: 40
Worksheet time: 25mins
Name
Class
Date
1.
1.What question did the scientists who collected this data want to answer?
a)
Are there more earthworms in the soil in the spring or in the fall?
b)
What is the effect of plowing soil on the number of earthworms?
c)
How is the size of earthworms affected by the seasons?
d)
Does plowing soil affect how fast earthworms grow?
2.
A scientist who wants to study the effects of a new fertilizer on plants would probably=
a)
give each experimental group the same amount of the fertilizer.
b)
not worry about measuring the amount of fertilizer used.
c)
include a control group that received no fertilizer.
d)
use different numbers of plants in each group.
3.
You and your friends want to determine if fertilizer helps a Barrel Cactus grow a flower (you have a cactus at home, and you really want it to grow a flower). You suspect that fertilizer will help. You buy two cacti. You plant Cactus A in normal soil with no fertilizer and plant the other in a pot with fertilizer. After summer comes and goes, no flower grows. In fact, the cactus with fertilizer died. What is the question you and your friends are investigating?
a)
If the fertilizer caused the cactus to flower.
b)
If the fertilizer caused the cactus to die.
c)
If the fertilizer made the cactus die, but no generalizable conclusions can be drawn.
d)
If the fertilizer will help the cactus produce a flower.
4.
What is the precise reading (in milliliters) of the liquid volume?
a)
35.3
b)
36.2
c)
36.5
d)
36
5.
Darlene places a bolt in the graduated cylinder to find its volume. Its starting volume is 35mL. After she puts the bolt in the graduated cylinder the water level rose to 90 mL. What is the volume of the bolt?
a)
24 cubic centimeters
b)
31 cubic centimeters
c)
45 cubic centimeters
d)
55 cubic centimeters
6.
Kelsey is measuring a sample of iodine crystals for an experiment. What is the mass of the iodine and weighing paper?
a)
A) 722.9 grams
b)
A) 722.8 grams
c)
A) 23 grams
d)
A) 23.9 grams
7.
Kevin is identifying samples of three unknown metals. One of the properties he will use for identification is the density. The table shows the mass and volume for each sample. Kevin knows that the units of density are grams per cubic centimeter (g/cm3). Calculate the density for sample 3 and find the answer below.
a)
A) 10.49 g/cm3
b)
A) 10.51 g/cm3
c)
A) 10.55 g/cm
d)
A) 10.49 g/cm
8.
Mr. Lee wants to confirm the metal used in a ring with a mass of 26.055 g. The volume of the ring is 1.35 cubic centimeters (cm3). What is the metal composition of the ring?
a)
A) Sterling silver
b)
18-ct white gold
c)
Pure gold
d)
=Platinum
9.
A student measured the velocities reached by an electric cart over time and recorded the data in the table shown. The student graphs the data, putting time in the horizontal (x) axis and the velocities reached on the vertical (y) axis. Which aspect of the graph reflects the acceleration of the cart?
a)
y-intercept
b)
y-axis scale
c)
slope
d)
midpoint
10.
a)
Graph A
b)
Graph B
c)
Graph C
d)
Graph D
11.
What do the data in this graph show?
a)
Unplowed soil has more earthworms than plowed soil.
b)
Plowed soil has more earthworms than unplowed soil.
c)
Plowing of soil has no effect on the number of earthworms.
d)
The number of earthworms cannot be predicted
12.
a)
Graph A
b)
Graph B
c)
Graph C
d)
Graph D
13.
What was the net loss in glacier ice thickness between the years 1970 and 2000?
a)
8m
b)
6m
c)
7m
d)
10m
14.
The graph shows energy production in the United States in 1967 and 2007 for several sources of energy. Which conclusion is supported by the graph?
a)
A) In 1967 more energy was produced in oil than in 2007
b)
A) More energy was produced in 2007 than in 1967 in every category.
c)
A) In 2007, more energy was produced from renewable energy sources than from fossil fuels.
d)
A) People in the United States were more concerned about conserving energy in 1967 than they were in 2007.
15.
Jordan has a mixture of two solids that he has to separate. The solids are small granules that are the same size but different colors. She knows that the silver granules are aluminum and the white granules are salt. Which procedure is the least reliable way to separate the mixture?
a)
Dissolve mixture in a universal solvent and filter. Then evaporate solvent to retrieve the salt.
b)
Dissolve mixture in a universal solvent and filter.
c)
Pass a magnet over the mixture.
d)
Sift the mixture through fine wire mesh.
16.
A mixture of coffee grounds and coffee being poured through filter paper. Which property of the coffee grounds is being used to separate them out from the molecules?
a)
A) Size of particles
b)
A) polarity of the molecules
c)
A) Size of pores in the filter
d)
A) Temperature of the water
17.
The graph shows the temperature changes in a sample of water that is heated steadily from -40°C. Which process is happening in section 2 of the graph?
a)
A) Ice is getting warmer.
b)
A) Ice is melting.
c)
A) Ice is in the solid phase.
d)
A) Ice is changing to vapor and then to a liquid.
18.
Tony found an old iron cannonball that had rust on it. He determined that the iron had been exposed to air and water, which caused the rust. Which statement explains the type of change represented by this reaction?
a)
The reaction represents a chemical change because the rust is just a mixture of water and iron.
b)
The reaction represents a chemical change because the iron oxide has a different melting point than iron.
c)
The reaction represents a chemical change because both the original cannonball and the rusted cannonball are solids.
d)
The reaction represents a chemical change because iron oxide is a new substance formed on the cannonball.
19.
When a Bunsen burner is lit; why is the presence of a flame considered to be an indication of a chemical reaction?
a)
A) A flame indicates a change of energy.
b)
A) A flame indicates a phase change.
c)
A) A flame indicates new physical energy is forming.
d)
A) A flame indicates a change in chemical energy.
20.
In science class, a teacher heats a sample of white wax. As the wax warms, it turns to a clear liquid. When the teacher allows the wax to cool, it hardens again, retaining its original color and mass. Heating the wax is classified as a physical change because it does not
a)
cause a permanent change of energy .
b)
change how atoms are bonded to one another
c)
change the mass in the wick.
d)
involve the destruction of molecules.
21.
Phillip watches a burning log in the fireplace. He makes these observations: I. There is a strong smell of smoke. II. The fire gives off heat.
III. Heat waves appear in the air above the log
IV. Light is emitted where there are flames.
V. Ashes form from the logs.
Which of Phillip’s observations are conclusive evidence that the burning log undergoes chemical changes and not just a physical change?
III. Heat waves appear in the air above the log
IV. Light is emitted where there are flames.
V. Ashes form from the logs.
Which of Phillip’s observations are conclusive evidence that the burning log undergoes chemical changes and not just a physical change?
a)
A) observations I and V only
b)
A) observations II , III, and V only
c)
A) observations I, III, and V only
d)
A) observations I, IV, and V only
22.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
d)
Compound
23.
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
24.
What is a hypothesis?
a)
A hypothesis is the right answer to an experiment.
b)
A hypothesis is the wrong answer to an experiment.
c)
A hypothesis is an educated guess.
d)
I don't know.
25.
Which is NOT a step in the scientific method?
a)
Make observation
b)
Form a theory
c)
Collect data
d)
Form a hypothesis
26.
Why do we want to test only one independent variable at a time?
a)
Because it is hard to setup a data table with more than one variable
b)
To better identify what is causing the changes
c)
It is what has always been done
d)
It's easier to perform the experiment
27.
True or False: Your hypothesis can never be wrong.
a)
True
b)
False
28.
Should experiments be repeated over and over to see if the results are the same each time?
a)
yes
b)
no
29.
What is being kept constant?
a)
ramp height
b)
speed of the ball rolling
c)
type of ball
30.
What is being changed in this experiment?
a)
temperature of the stove
b)
how fast the water boils
c)
amount of water
31.
What is being measured or the result/effect of this experiment?
a)
how fast the water boils
b)
amount of water
c)
temperature of stove
32.
What is being kept constant?
a)
how fast the water boils
b)
amount of water
c)
temperature of stove
33.
What is being measured or the result/effect of this experiment?
a)
ramp height
b)
the speed that the ball rolls
c)
type of ball
34.
What is being changed in this experiment?
a)
ramp height
b)
the speed that the ball rolls
c)
type of ball
35.
In this graph, what is the independent variable?
a)
Population
b)
Day
c)
Species 5
36.
In this graph, what is the dependent variable?
a)
Walla Walla Island
b)
Time
c)
Number of Deer
37.
When you decide whether or not the data supports the original hypothesis, you are
a)
drawing conclusions
b)
forming a hypothesis
c)
asking questions
d)
making observations
38.
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is
a)
the size of the baby alligators
b)
the gender of the baby alligators
c)
the incubator
d)
the temperature
39.
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is
a)
the male alligators
b)
the incubator
c)
the gender of the alligator
d)
the temperature
40.
The following statement is a hypothesis formed about marsh grass:
If the amount of nitrogen marsh grass receives is increased, then the height of the grass will increase, because nitrogen is an essential nutrient needed for marsh grass to grow.
What is the independent variable of the statement above?
If the amount of nitrogen marsh grass receives is increased, then the height of the grass will increase, because nitrogen is an essential nutrient needed for marsh grass to grow.
What is the independent variable of the statement above?
a)
Height of grass
b)
Amount of nitrogen
c)
Essential nutrient
d)
Amount of growth
100 %
