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WorksheetsES - Experimental Design
Total questions: 43
Worksheet time: 1hrs 7mins
The type of variable that responds to the experiment and is what you measure or count to determine if your hypothesis is true.
Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed a tomato plant in 6 identical 10 inch pots with the same amount and type potting soil. She watered them ¼ cup each day. 3 plants were placed under a cardboard box and 3 plants were 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
3 plants in the sunlight and 3 plants under a box
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
Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed a tomato plant in 6 identical 10 inch pots with the same amount and type potting soil. She watered them ¼ cup each day. 3 plants were placed under a cardboard box and 3 plants were placed in the sunlight. She measured the growth of the plant each week for three weeks.
What is the independent variable?
Using the same type of plant
Each plant was placed in a 10 inch pot
The growth of the plant
3 plants in the sunlight and 3 plants under a box
procedure or test
Answer the following using the picture below. What are the constants? Select all that apply.
Type of plant
Water
Test tube
Plant growth
Stopper
A/an ____________ is a testable statement predicting the result of a scientific experiment. (Format If..... then......)
Scientific statement
Conclusion
Hypothesis
Prediction
A ___________ is a judgement based upon evidence obtained from research or data collected in an experiment.
Final Answer
Conclusion
Hypothesis
Educated Guess
The ________________ is the variable that changes as a result of the independent variable. It is MEASURED.
Control
Constant
Dependent Variable
Variable
The variable in an experiment that the experimenter purposely changes. (Changed)
Control
Independent Variable
Constant
Dependent Variable
The hypothesis is written in the form...
When I..... then......
If......then.....
I think........
When this happens then.....
Another name for an educated guess?
Hypothesis
Good guess
Scientific method
Scientific notation.
Which of these would be the proper way to write a hypothesis
I think the water will make the plant grow.
Watering plants will make them grow better.
If I add more water, then the plant will grow taller.
Maybe water will make a plant grow taller.
A summary of the experiment that includes whether hypothesis was supported or not.
Hypothesis
Results
Conclusion
Independent Variable
The one factor that a scientist has control over "manipulates" during an experiment. This goes on the x-axis.
Independent Variable
Dependent Variable
The variable that is measured. It goes on the y-axis.
Independent Variable
Dependent Variable
What relationship is 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.
The things that are kept the same to ensure the results are due to the experiment is called..
Constant
Dependent Variable
Independent Variable
This type of variable is what you DON'T change in a lab
Control
Independent
Dependent
A company wants to sell more sports drinks so they decide to add more sugar. For Group A they give them gatorade with an added teaspoon of sugar. For Group B they give them regular gatorade (without adding extra sugar). Which Group is the CONTROL GROUP?
An experiment is being done to determine how light affects the growth of flowers. 10 flowers are given the regular amount of (sun)light, 10 flowers are grown in a shaded area, and 10 are grown in an area where they received extra sunlight. What is the control group in this experiment?
the 10 flowers that received extra sunlight
the 10 flowers grown in a shaded area
the 10 flowers grown in the regular amount of (sun)light
A food scientist and coffee shop owner hypothesizes that the temperature at which milk is heated for hot chocolate affects the (perceived) sweetness of the taste. He makes 50 cups of hot chocolate from milk heated to the regular temperature. He makes 50 cups of hot chocolate with milk heated at a higher temperature. He asks 20 people to test them. What is the experimental group?
the 50 cups of hot chocolate made with milk heated to the regular temperature
the 50 cups of hot chocolate made with milk heated to the higher temperature
the type of milk used
the temperature of the milk
What type of trend does this graph have?
positive
negative
none
all of the above
Is this line an accurate line estimate of best fit for the data?
Yes
No
Is this line an accurate line estimate of best fit for the data?
Yes
No
