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WorksheetsFair Investigation & Variables Quiz
Total questions: 10
Worksheet time: 7mins
What is the definition of a HYPOTHESIS?
A question you want to solve
Data you collect during an experiment
A graph you create to show your data
An educated guess to your question
You want to know which brand of fertilizer is best for your plants. What is the independent variable?
the fertilizer
the health of your plants
You want to compare brands of paper towels, to see which holds the most liquid. Which is the independent variable?
the brand of paper towel
the amount of water
In a study to determine whether how long a student sleeps affects test scores, the dependent variable is ______________.
the test score
the amount of sleep
Match these about variables
independent variable
the variable that changes between trials
things that stay the same
the results of the experiment
dependent variable
constants
Siti is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair.
She used different types of seeds/plants.
Seed age might not make a difference.
She did not plant very many plants.
What is the CONSTANT VARIABLE (same) in this picture?
type of the plant
weight of the plant
price of the plant
Look closely at the setup of the experiment. Does it look like it was set up properly?
Yes - all the plants are the same
Yes - all the plants get some water
No - the lights AND the water are different - only one thing should be changed
No - they should have used all three different kinds of plants
Put the steps of the scientific method in the correct order.
Ask a question
Do the research
Form a hypothesis
Do the experiment
Analyze the results & form a conclusion
Quincy wants to know if drinking more water helps her stay more awake during the day. She increases the amount of water she drinks by 150mL every day for three weeks. She observes how she feels and recorders her results. She makes sure she is doing everything the same, but she doesn't get the same amount of sleep every night. Is this a fair experiment?
Yes, because the only thing that changes is the amount of water she drinks.
Yes, because she starts to feel better during the day.
No, because she also changes how much sleep she is getting - not just the amount of water.
No, because she is still tired at the end of the experiment.
