Biology, 28.10.2020 20:00 bellamparker
I really need help and fast answer all the questions please whoever answers get brainliest
1. A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were
added before each test flight. As each paper clip was added, the plane was tested to determine how far it would
fly.
Independent variable
Dependent variable
Control
Constant
2. Two groups of students were tested to compare their speed working math problems. Each group was given
the same problems. One group used calculators and the other group computed without calculators.
Independent variable
Dependent variable
Control
Constant
3. Students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured.
Independent variable
Dependent variable
Constant
There can be several controlled variables. If an experiment is to be useful, only one variable at a time can
be manipulated intentionally. All other variables must be controlled throughout all parts of the
experiment. If more than one variable is altered (changed), the results of an experiment cannot be
interpreted with any validity.
4. An experiment was performed to determine how the amount of coffee grounds could affect the taste of
coffee. The same kind of coffee, the same percolator, the same amount and type of water, the same perking
time, and the same electrical sources were used.
Independent variable
Dependent variable
Constants (3)
Answers: 1
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Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere
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Look at the photo of the leaf, which term best describes this leaf ? a-simple.b-parallel.c-lobed.d-tooth.
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I really need help and fast answer all the questions please whoever answers get brainliest
1. A stu...
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