AnswersRogowskiWCA 4321 Environmental Science 1st 9 weeks 26-27Scientific Measurement

Scientific Measurement Answers

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1
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One km is equal to _______.

A
0.62 ft
B
3280.8 ft
C
1.61 ft
D
5280 ft
2
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Which of the following values is the largest?

A
50000 mm
B
0.5 km
C
50 m
D
5000 cm
4

What is 0.55 hectometers expressed in decimeters?

A
550 dm
B
5.5 dm
C
55 dm
D
0.00055 dm
5

The number 0.00243 has how many significant digits?

A
3
B
4
C
5
D
6
6

How many significant figures are in the measurement 1.050 L?

A
1
B
2
C
3
D
4
7

What is the purpose of the prefixes in the metric system?

A
They signify the multiples of ten for each unit.
B
They signify a completely separate unit.
C
They always make a unit smaller.
D
They always make a unit larger.
8

Which of the following is not an advantage of using the metric system?

A
The basic units of measurement are related to each other.
B
The units are based on multiples of ten.
C
The units are used internationally.
D
It was designed in France in 1791.
9

Round the number 14.587020 to 4 significant digits.

A
14.59
B
14.58
C
14.587
D
15.00
10

Volume can be measured in liters or cubic meters.

A
T
B
F
11

Scientists take scientific measurements carefully in order to ensure their reliability and validity. What is the difference between accuracy and precision in scientific measurements?

A
Accuracy is how far out the measurement is taken, while precision is how close a measured value is to its true value.
B
Accuracy is how close a measured value is to its true value, while precision is how close measured values are to each other.
C
Accuracy is how close a measured value is to its true value, while precision is how close the average value is to the true value.
D
Accuracy and precision are two different words for the same thing.

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