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WorksheetsScientific Method & Experimentation
Total questions: 15
Worksheet time: 30mins
In a science experiment, John is testing the effect of different types of soil on plant growth. He uses the same type of plant, the same amount of water, and the same amount of sunlight for all groups. What are these variables called that remain the same for all groups?
Independent
Dependent
Control
Constant
A scientist thinks that flatworms swim faster if they are in salt water. So he drops them in salt water and finds that they do swim very fast. He concludes that salt water makes flatworms swim fast.
Why is the statement "swimming is the coolest sport" a bad hypothesis?
it's definitely not true
basketball is the best sport
it is opinion based and not testable
not everyone can swim
In an experiment to discover which brand of bug spray does best at preventing mosquitoes bites, the brand of bug spray is the -
control
independent variable
constant
dependent variable
What is the first step in the scientific method?
analyze data
draw conclusions
perform and experiment
observe and recognize a problem
An experiment is conducted to test the hypothesis that a certain type of houseplant grows best when exposed to exactly four hours of sunlight per day. Which is the dependent variable?
hours of sunlight
growth of plant
type of soil
amount of water
In an experiment to determine which bug spray works best to keep mosquitoes from biting, what is the dependent variable?
the cost of the spray
the place where you conduct the experiment
the amount of spray
the number of bug bites
Experiments measure how changing the __________variable affects the __________ variable.
controlled, other
dependent, independent
primary, secondary
independent, dependent
A hypothesis is a prediction or explanation that can be -
researched
tested by experimentation
proven
modeled
Which statement is NOT true?
An experiment is a failure if the data does not support the hypothesis.
An experiment should have only one independent variable.
More trials of an experiment will provide more reliable results.
All factors other than the independent variable should be constant.
