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WorksheetsQuestion Bank Unit 1
Total questions: 127
Worksheet time: 3hrs 33mins
The things that are kept the same to ensure the results are due to the experiment is called..
Constant
Dependent Variable
Independent Variable
Angel wants to know if the type of soap has an effect on how clean her clothes get. What is the independent variable?
type of soap
how long the laundry takes
Angel wants to know if the type of soap has an effect on how clean her clothes get. What is the dependent variable?
type of soap
how clean the clothes are
Zach wants to determine if the amount of time spent on social media has an effect of grades. What is the independent variable?
time on social media
computer skills
Zach wants to determine if the amount of time spent on social media has an effect of grades. What is the dependent variable?
popularity
grades
Maddie wants to determine if the weight of the dog will determine the number of puppies in a litter. What is the independent variable?
weight of dog
number of puppies
Maddies wants to determine if the weight of the dog will determine the number of puppies in a litter. What is the dependent variable?
type of dog
number of puppies
Beth wants to know if increasing her exercise will decrease the time it takes her to run a mile. What is the dependent variable?
time to run a mile
amount of exercise
Beth wants to know if increasing her exercise will decrease the time it takes her to run a mile. What is the independent variable?
distance
amount of exercise
Julie wants to know the effect of studying 10 minutes extra each day on her Math. What is the dependent variable?
her math grade
studying 10 extra minutes
The things that are changing in an experiment
Variables
Questions
Hypothesis
Data
The one thing that a scientist changes in their investigation
Variable
Independent variable
data
Hypothesis
What the scientist is measuring in their investigation.
Dependent variable
variable
hypothesis
data
What is a constant/control in an experiment?
Things that do not change in a experiment. It's the variable that stays the same. You can have many variables stay the same.
It's the variables that the scientist changes in the experiment
It's the variables that are being measured in an experiment
What would the independent variable be in an experiment testing which type of paper airplane goes the furthest?
the type of paper used.
the distance each plane flies.
how hard the plane is thrown.
the type of paper airplane.
Sarah wanted to find out if the size of a car tire made it a smoother ride over bumps. What is the dependent variable?
Marcos wants to know: Does the type of gasoline put in a car effect how fast the car can drive? What is the dependent variable?
This part of the experiment serves as a basis of comparison:
control group
Independent variable
dependent variable
data
A possible explanation to a problem that has not yet been tested. Educated guess.
data
theory
hypothesis
fact
This variable in an experiment is the one being deliberately changed by the scientist.
dependent variable
independent variable
data
control group
What step does every scientific experiment begin with?
hypothesis
question/problem
procedures
conclusion
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 ...
type of plant
the amount of sunlight
the type of music
the type of liquid
The summary at the end of an experiment that explains the results.
conclusion
hypothesis
procedure
question
A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?
time of day exercise occurs
amount of exercise
heart rate
type of exercise
Observations made during an experiment are called:
data
problems
conclusions
questions
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 are the controlled variables?
type of plant, amount of music, and sunlight
plant growth
water, apple juice, milk
Which is true about a hypothesis?
It may reject or accepts your prediction.
It summarizes the result on the experiment.
It is the final answer to the question.
It is an educated guess or possible answer to the question.
All hypothesis are accepted.
True
False
The graph below shows atmospheric carbon dioxide levels since the year 1880.Which of the following conclusions can be drawn from this graph
Atmospheric carbon dioxide levels are responsible for global temperature change.
Atmospheric carbon dioxide levels have been rising at about the same rate for the past century.
Atmospheric carbon dioxide levels have remained the same over the past century.
Atmospheric carbon dioxide levels have been rising at an increasingly higher rate as the past century has progressed.
In order to be accepted, a scientific theory must be
based on the results of a single experiment
widely tested and supported by extensive data
in line with all previous historical ideas
controversial and cause debate
Conclusions based on an experiment are most likely to be accepted when
they are consistent with experimental data and observations
they are derived from investigations having many experimental variables
scientists agree that only one hypothesis has been tested
hypotheses are based on one experimental design
An experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured. The participants in the experiment were all the same age, and they were all given the same amount of soda. The dependent variable in this experiment is the
type of soda given to each group
amount of soda given to each group
pulse rate of each group
age of participants in each group
What effect does fertilizer have on plant growth? Identify the correct step from the choices below.
ask a question
state the hypothesis
collect the data
draw conclusions
Which type of data involves numbers that are obtained by counting or measuring?
quantitative
qualitative
Which type of data involves descriptions that cannot be counted or measured?
qualitative
quantitative
How do scientists prove their claim?
With a story
With evidence
With an experiment
With an essay
A testable question should include what two things?
A hypothesis and question
A question and a dependent variable
An independent variable but no dependent variable
An independent variable and a dependent variable
The one factor that a scientist changes during an experiment.
Controlled Variable
Dependent Variable
Independent Variable
The variable that is measured.
Controlled Variable
Dependent Variable
Independent Variable
In a controlled experiment, how many independent variables can be tested at a time?
one
none
two or more
how ever many makes sense.
Why is it important to have only one independent variable and to control the other variables when performing science experiments?
So you can tell which factor is causing the change in the experiment.
It does not matter, you can have as many independent variables as you want.
Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.
What is the independent variable?
Dropping the same way
Wing Length
Amount of time it takes the helicopter to hit the floor
Dropping from the same height
Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.
What is the dependent variable?
Dropping the same way
Wing Length
Amount of time it takes the helicopter to hit the floor
Dropping from the same height
Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.
What is the dependent variable?
Using the same type of plant
Each plant was placed in a 10 inch pot
The growth of the plant
One plant is in the sunlight and the other is under a box
Does the type of shoe worn during a 30 meter dash affect the speed of the runner? The speed of the runner is the...
independent variable
dependent variable
What is the dependent variable?
How long you sleep affects your test score. Identify the dependent variable.
length of sleep
test score
Say you want to know whether caffeine affects your appetite. The presence/absence of a given amount of caffeine would be the __________ variable. How hungry you are would be the __________ variable.
independent , dependent
dependent , independent
What is an independent variable?
What a scientist changes in an experiment to test their hypothesis
What scientist measure to see if it responded to a change
What happens when you do an experiment
What you keep the same throughout all experimental groups
At what temperature did bread mold the slowest?
20
40
60
80
Independent variable
Dependent variable
Conclusion
Thomas tests different types of liquids to see which will grow his plants the most. He has water, soda, milk, and no liquid at all. What is the control group?
the one with water
the one with soda
the one with milk
the one with no liquid
A scientist hypothesizes that the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is
In this experiment the independent variable would be:
The egg.
The volume of water.
The amount of salt.
The float level.
In this experiment the independent variable would be:
The type of fertiliser.
The potting mix used.
The type of plant.
The amount of water given per week.
In this experiment the independent variable would be:
The distance travelled by the model planes.
The force each was thrown with.
The materials each was made with.
The type of model.
In an experiment to determine the effects of listening to loud music on test scores, what would the x-axis label be?
Type of music
Test score
Volume of music
Grade in class
Describe the trend shown in the graph.
As the volume decreases, the mass stays the same.
As the mass decreases, the volume increases.
As the volume increases, the mass increases.
As the mass increases, the volume stays the same.
The variable that is measured.
Controlled Variable
Dependent Variable
Independent Variable
Increased CO2 is causing global temperatures to rise.
What is the dependent variable in this graph?
When should a bar graph be used?
When comparing parts of a whole
When showing change over time
When comparing data between different groups of categories
Whenever you want
When should a line graph be used?
When comparing parts of a whole
When showing change over time
When comparing data between different groups of categories
Whenever you want
What type of graph would you make to show how many of your classmates were born in each month of the year?
line
bar
circle
scatter plot
What is a valid conclusion that can be determined from the data shown on this graph?
The cooler the temperature, the louder the crickets chirp.
The crickets cannot chirp at temperatures lower than 10 degrees C.
The warmer the temperature, the more often crickets chirp.
The temperature and the chirping of crickets are not related.
A student set up an experiment to test the effect of the number of seedlings planted in one pot on the rate of growth. All conditions in the experiment were the same, except for the number of plants in each pot. The results are shown in the graph below.
According to the graph, which statement is true concerning the growth of the plants?
The plants in the pot with only 5 plants grew to be an average of 40 cm tall in 30 days
The plants in the pot with only 10 plants grew to be an average of 30 cm tall in 20 days.
The plants in the pot with 15 plants grew an average of 20 cm taller after a period of 10 days.
The plants in the pot with 20 plants grew an average of 20 cm taller after a period of 40 days.
The graph below shows atmospheric carbon dioxide levels since the year 1880.Which of the following conclusions can be drawn from this graph
Atmospheric carbon dioxide levels are responsible for global temperature change.
Atmospheric carbon dioxide levels have been rising at about the same rate for the past century.
Atmospheric carbon dioxide levels have remained the same over the past century.
Atmospheric carbon dioxide levels have been rising at an increasingly higher rate as the past century has progressed.
Select everything needed to make a graph. (You can choose more than one.)
Title
Consistent Scales
Data
Labels with units
Use of all graph space
Which type of graph should be used for the data?
Circle
Bar
Line
When should a line graph be used?
When comparing two things
When both variables include quantitative data
When one variable is qualitative and the other is quantitative
Which type of graph would best show data that changes over time?
Line graph
Bar graph
Pic chart
Scatter plot
The one variable in an experiment that is purposely changed and tested by the scientist is the________________.
dependent variable
independent variable
data
control group
Research Question: Does the type of gasoline put in a car affect how fast the car can drive.
What is the independent variable?
Type of gasoline
which car the gas is put into
how fast the car can drive
how much gas is put into the car
How many independent variables should you have in an experiment?
two
as many as possible
four
one
This part of the experiment serves as a basis of comparison; the group that does not receive the independent variable.
constant
control group
experimental group
hypothesis
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. What should be kept constant?
This is the group that receives the independent variable in an experiment?
Control Group
Experimental Group
Changed Group
Cool Group
If I floss more, then I will have fewer cavities. What is the independent variable?
Number of cavities
Amount of flossing
Type of floss used
Amount of brushing
Factors kept the same so only one variable is tested.
Observations
Controlled variables (constants)
Control group
Independent variable
What is the Independent Variable? (Hint: what is intentionally being changed?)
If soil temperatures rise, then plant growth will increase.
Rising soil temperatures
Plant growth
Soil
Plants
Which of these questions is a testable scientific question?
How many angels can dance on the head of a pin?
What is the age of our planet?
How many ghosts are there in the room?
Can psychics help you win the lottery every time?
The variable that is intentionally or purposely changed within an experiment is a/an:
Control variables (constants)
Observation
Independent Variable
Dependent Variable
The factor that may change as a result of the independent variable is:
Control variables (constants)
Observation
Independent Variable
Dependent Variable
Factors that are all kept the same except for the variable changed:
Control variables (constants)
Control group
Independent Variable
Dependent Variable
The group that remains the same (the norm). This is used as a comparison to see if the manipulated variable had an effect.
Control variables (constants)
Control group
Independent Variable
Dependent Variable
A student used a long flowing scarf to tie back hair while working in the lab. Is this safe or unsafe?
safe
unsafe
not sure
A student put on goggles before using chemicals in the lab. Is this safe or unsafe?
safe
unsafe
not sure
A student worked a lab when Mrs. Rettig was not in the room. Is this safe or unsafe?
safe
unsafe
not sure
A student worked a lab while eating his lunch. Is this safe or unsafe?
safe
unsafe
not sure
A student got a replacement test tube for a lab because his had a chip on the rim. Is this safe or unsafe?
safe
unsafe
not sure
The classroom was cold so a student wore her baggy sweatshirt while working in the lab. Is this safe or unsafe?
safe
unsafe
not sure
A student mixed all her extra chemicals at the end of a lab before disposing of them. Is this safe or unsafe?
safe
unsafe
not sure
A student moved his backpack under his desk before working in the lab. Is this safe or unsafe?
safe
unsafe
not sure
A student washed hands with soap and water before leaving the lab. Is this safe or unsafe?
safe
unsafe
not sure
What is the Independent Variable?
The more water you put on grass, the taller it will grow.
Water
Grass
Height
Growth
What is the Dependent Variable?
The more water you put on grass, the taller it will grow.
Water
Grass
Height of grass
Amount of water
Three sunflower plants are watered with salt water. Each plant receives a different concentration of salt solution. A fourth plant receives pure water. After a two-week period, the height of each plant is measured.
What is the Independent Variable?
concentration of salt solution
pure water
sunflower plants
the height of the sunflowers
Three sunflower plants are watered with salt water. Each plant receives a different concentration of salt solution. A fourth plant receives pure water. After a two-week period, the height of each plant is measured.
What is the Dependent Variable?
concentration of salt solution
pure water
sunflower plants
the height of the sunflowers
Three sunflower plants are watered with salt water. Each plant receives a different concentration of salt solution. A fourth plant receives pure water. After a two-week period, the height of each plant is measured.
What is the Control Group (what would normally be done)?
the fourth plant that gets pure water
the three plants that receive salt water
the sunflower plants
the height of the plants
Three sunflower plants are watered with salt water. Each plant receives a different concentration of salt solution. A fourth plant receives pure water. After a two-week period, the height of each plant is measured.
What is not a controlled (constant) variable?
The type of plant
The growth
the two week time period
Three sunflower plants are watered with salt water. Each plant receives a different concentration of salt solution. A fourth plant receives pure water. After a two-week period, the height of each plant is measured.
What is a change you would make to this experiment to get more accurate results?
