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Worksheetsreview for data and variables quiz
Total questions: 42
Worksheet time: 27mins
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?
type of plant, amount of music, and sunlight
plant growth
water, apple juice, milk
Thomas wanted to know if the addition of Wolves to Yellowstone provided more biodiversity to Yellowstone. What is the independent variable?
the addition of wolves
the biodiversity
the number of bison
the number of species in Yellowstone
A scientist does an experiment to see if acids have an effect on the health of a plant. Three sets of plants were treated with acidic solutions (acids have pH lower than 7 -- the strongest acid is pH 1) while the control set was treated with a solution of neutral pH 7. Which is the best conclusion for this experiment?
High acidity is helpful to this type of plant.
Low acidity is harmful to this type of plant.
Ms. DiGeronimo wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. What constant should be considered when doing this experiment?
types of music
using a different student for each music type
amount of time the music was played
Pulse rate of students
Which of the following is the label for the independent variable.
Money Collected
Raising Money
Boxes Sold
None of the above
Vitamin could extend a person's life expectancy. The dependent variable is __________.
amount of vitamin taken
life span
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
How would you describe the following data?
Age….
Quantitative
Qualitative
This type of variable remains constant
controlled
responding
dependent
all of the above
"The plant in Container A has five offshoots" is an example of a _________ observation.
hypothesis
qualitative
quantitative
-Amount of water
-Height of Ice cube
-Temperature the ice cube was at its highest height
-Temperature of the water
-Size of the ice cube
What is an independent variable?
the variable that changes because another variable changes
independent variables are only found on pie charts.
a variable most often found on the y-axis
the variable the experimenter manipulates or has control over
What are the two kinds of variables that you need to identify in your experiments?
Independent and dependent
Independent and manipulated
Dependent and responding
We don't need to identify variables
What is being measured during your experiment
dependent variable
independent variable
controls
All the things that stay the same during an experiment
constants
independent variables
dependent variables
data
Information gathered during an experiment
data
control group
independent variable
constants
Data that is descriptive (red, fuzzy, sour)
qualitative
quantitative
Data that is numerical (12in, 65 degrees)
quantitative
qualitative
factor in a controlled experiment that is deliberately changed; also called the manipulated variable
independent variable
dependent variable
quantitative data
qualitative data
Which of the following is an example of an OBSERVATION?
I think the honeybee is the primary pollinator
The flower is probably poisonous
The flower has been blooming for about 5 days
The flower has pink flower petals
A/an _____ variable is a single changeable variable in an experiment. (2)
controlled
independent
dependent
manipulated
How does the distance from this eye chart affect the number of letters visible on a line? What's the Dependent Variable?
The distance from chart
Number of letters read accurately
Color of text in the chart
Font of text
Kari is testing the hypothesis that plants rely on photosynthesis to grow. She conducts an experiment in which she observes the sprouting and growth of been seeds. The beans are raised either in sunlight or darkness. She records her observations in a data table.
Which statements from Kari's records convey qualitative data and not quantitative data? Choose all that apply.
the beans in the control group have a white spot on day 2
the beans in the control group have 1.0 cm sprouts on day 3
the beans in the control group feel soft on day 2
the beans of both groups appear equally green and healthy on day 1
Water fleas typically live in water that is 20oC. A student believes that increasing water temperature will increase heart rate. Water fleas are placed in 20°C, 30oC, 40oC, and 50oC water and their heart rates are recorded. Which of the following best describes the control group?
water flea heart rate
20oC water
# of water fleas
40oC water
type of flea
Look at the chart. What is the control group?
Usual route
alternate B
alternate C
time in minutes
The part of the experiment that does not contain the independent variable. Used for comparison.
Control Group
Experimental Group
Results
Data
Water fleas are placed in 40°C water and 20oC water and their heart rates are recorded. What is the independent variable?
heart rate
temperature of water
# of water fleas
type of liquid
type of flea
50 weightlifters are given vitamin supplements before they lift and 50 different weightlifters are given no supplements and change in muscle mass is recorded after 4 months. Which of the following would be standardized variables for this experiment? (Bubble all that are true)
amount and type of food eaten during day
% increase in muscle mass
amount of supplement given
type of exercise
being given supplements or not
How does the amount of oxygen in the water affect oyster size? What's the Dependent variable?
The size of the oysters
The color of the oyster shell
Amount of oxygen in the water
Amount of water
