This exam will evaluate your level of knowledge concerning variable, experiments, and data. Take your time when selecting answers because you cannot go back. Good luck!
A control group
Many trials
A reproducible procedure
Small sample size
Develop a procedure
Analyze data
Make a conclusion
Collect evidence
Something you measure or observe
Something you change on purpose
Something that can change but you keep it the same
Something that you do not change and compare your results to
Carrots taste dry
A raw carrot is hard to chew
An uncut carrot is two inches too long to fit into his lunchbox
Carrots are difficult to peel
Time she falls asleep
Noise levels
Size of crib
Type of crib
Time
Distance
Both a and b
None of the above
Increase the number of trials
Change the measurements
Use feet instead of meters
Graph the results
Something you measure of observe
Something you change on purpose
Something that can change but you keep it the same
Something that doesn't change but you compare the results to it
I hypothesize that plants need water to grow.
I hypothesize that plants need sunlight to grow.
I hypothesize that salt water will inhibit (prevent or slow down) the growth of plants.
I hypothesize that different types of plants will be less affected by the salt water.
Daily amount of sunlight
Daily amount of water
Type of water used
Type of plant used
Type of plant used
The plants receiving fresh water
The plants receiving salt water
Type of water used
Size of the plant and length of the leaves
Color of the plants and how the leaves feel
Smell of the plant and size of the pot
Color of the leaves and height of the plants
Counting the number of men in a class
Finding the length of a table
Measuring the amount of liquid a cup holds
Determining how far a plane can fly
They are used in most experiments
They have an independent variable
They have a dependent variable
They have an independent and dependent variable
Something you measure or observe
Something you change on purpose
Something that can change but you keep it the same
Something that you compare the results to
Because people make a lot of mistakes
People have a lot of variation and a large sample size gives you better data
People need time to make decisions
People need better data so they put the data into graphs and tables
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