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

Scientific Measurement Answers

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1
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The metric system is only used in France.

A
T
B
F
2
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Which of the following measurements has the greatest precision?

A
100
B
100.0
C
100.00
D
1
3

One km is equal to _______.

A
0.62 ft
B
3280.8 ft
C
1.61 ft
D
5280 ft
4

Scientists take scientific measurements carefully in order to ensure their reliability and validity. Which of the following is an example of measurement bias in scientific measurement?

A
a scale that reads zero when nothing is on it
B
a stopwatch that stops immediately when the stop button is clicked
C
a balance that always reads .01 g
D
measuring your height in your bare feet
5

Volume can be measured in liters or cubic meters.

A
T
B
F
6

The number 0.00243 has how many significant digits?

A
3
B
4
C
5
D
6
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

A quantity must be divided by multiples of ten when converting from a larger unit to a smaller unit. Please select the best answer from the choices provided

A
T
B
F
9

Which of the following values is the largest?

A
50000 mm
B
0.5 km
C
50 m
D
5000 cm
10

What is 150 mm expressed in decimeters?

A
1500 dm
B
15 dm
C
1.5 dm
D
0.15 dm
11

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.
12

The metric system is now known as the international system of units.

A
T
B
F
13

What is 0.55 hectometers expressed in decimeters?

A
550 dm
B
5.5 dm
C
55 dm
D
0.00055 dm
14

How many significant figures are in the measurement 1.050 L?

A
1
B
2
C
3
D
4
15

Round the number 14.587020 to 4 significant digits.

A
14.59
B
14.58
C
14.587
D
15.00
16

Which of the following is the SI unit used to measure mass?

A
kilogram
B
liter
C
meter
D
Kelvin

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