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Experimental Design Principles Answers

8 verified answers
1
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Which describes the correct procedure when converting a number from scientific notation to standard notation if the power of 10 is -10?

A
Move the decimal point to the left.
B
Move the decimal point to the right.
C
Add 20 to the number.
D
Subtract 20 from the number.
2
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When 560,000 is written in scientific notation, what is the power of 10?

A
4
B
5
C
6
D
7
3

Which best explains why replicating an experiment should be done by someone other than the person who originally did the experiment?

A
It shows that the results are the same using different methods.
B
It shows that the experiment is easy to do.
C
It shows that the results are as expected.
D
It shows that the experiment is designed properly.
4

Which best explains why replicating an experiment should be done by someone other than the person who originally did the experiment?

A
It shows that the results are the same using different methods.
B
It shows that the experiment is easy to do.
C
It shows that the results are as expected.
D
It shows that the experiment is designed properly.
5

A scientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. Another scientist conducted the same experiment and got similar results.

A
repetition
B
replication
C
precision
D
validity
6

What does it mean if data are reproducible but not accurate?

A
The data can be produced over and over but are not close to the accepted value.
B
The data are close to the accepted value but cannot be produced over and over.
C
The data are close to the accepted value and are close to one another.
D
The data are close to the accepted value but are not close to one another.
7

What is 18,000 expressed in scientific notation?

A
1.8 × 10–4
B
1.8 × 104
C
1.8 × 10–5
D
1.8 × 105
8

What are two main purposes for using repetition when conducting experiments?

A
recording data easily and saving time
B
increasing confidence in results and recording data easily
C
reducing mistakes and increasing confidence in results
D
saving time and increasing confidence
9

A scientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. Another scientist conducted the same experiment and got similar results.

A
repetition
B
replication
C
precision
D
validity
10

Why is scientific notation used?

A
to round numbers to the nearest whole number
B
to promote reproducibility of data
C
to increase the validity of data
D
to express very large or very small numbers

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