Measurement And The Metric System

1.

Which of the following is NOT a metric unit?

A.

Fahrenheit
B.

Gram
C.

Liter
D.

Meter

Correct Answer
A. Fahrenheit

Explanation
Fahrenheit is not a metric unit because it is a unit of measurement used to quantify temperature in the Imperial system. The metric system uses Celsius as its unit for measuring temperature. Gram, liter, and meter are all metric units used to measure mass, volume, and length respectively.

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4

2.

3 Kilometers = ________ meters

Correct Answer
3000
3,000

Explanation
The question asks for the conversion of 3 kilometers to meters. The correct answer is 3000 or 3,000. This is because there are 1000 meters in 1 kilometer, so to convert kilometers to meters, you need to multiply the number of kilometers by 1000. In this case, 3 kilometers multiplied by 1000 equals 3000 meters.

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1

3.

2000 milliliters = ________ liters

Correct Answer
2
2.0

Explanation
To convert milliliters to liters, we divide the value in milliliters by 1000. Therefore, 2000 milliliters is equal to 2 liters. The answer can be expressed as both 2 and 2.0 since they represent the same value in liters.

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4.

3.4 hectograms = ________ grams

Correct Answer
340
340.0

5.

36 centimeters = ________ meters

Correct Answer
0.36
.36

Explanation
The answer is 0.36 or .36 because 1 meter is equal to 100 centimeters. To convert centimeters to meters, we divide the number of centimeters by 100. In this case, 36 centimeters divided by 100 equals 0.36 or .36 meters.

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6.

3.9 kilograms = ______ decigrams

Correct Answer
39000
39,000

Explanation
The given question asks for the conversion of 3.9 kilograms into decigrams. To convert kilograms to decigrams, we need to multiply the given value by 10,000 since there are 10 decigrams in 1 kilogram. Therefore, 3.9 kilograms is equal to 39,000 decigrams.

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7.

Correct Answer
43 mL
43.0 mL
43 ml
43.0 ml
43ml
43.0ml
43mL
43.0mL
43 mililiters
43.0 mililiters

8.

Give your answer to this question with then correct number of significant figures. (3.2 mL) - (2.3216 mL) =

Correct Answer
0.9 mL
.9 mL
0.9mL
.9mL

Explanation
The correct answer is 0.9 mL because when subtracting two numbers, the result should have the same number of decimal places as the number with the fewest decimal places. In this case, both numbers have one decimal place, so the result should also have one decimal place.

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9.

Give your answer to this question with then correct number of significant figures. (7.2 g) * (6.12 g) =

Correct Answer
44 g
44g

Explanation
The product of 7.2 g and 6.12 g is 44 g. The answer is given as 44 g, which is the correct number of significant figures.

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10.

Give your answer to this question with then correct number of significant figures. (Watch the units!) (2.122 kilometers) - (2.0 meters) = _______ kilometers

Correct Answer
2.120

Explanation
The given question asks for the subtraction of 2.0 meters from 2.122 kilometers. To perform the subtraction, we need to convert the units to the same. Since 1 kilometer is equal to 1000 meters, we can convert 2.122 kilometers to meters by multiplying it by 1000. This gives us 2122 meters. Now, we can subtract 2.0 meters from 2122 meters, which equals 2120 meters. Finally, we convert the result back to kilometers by dividing it by 1000, giving us 2.120 kilometers.

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11.

Find the total distance traveled: 2 meters South and 5 meters South

Correct Answer
7 meters
7 m
7.0 meters
7.0 m

Explanation
The total distance traveled is 7 meters because both distances given are in the same direction, South. Therefore, we can simply add the magnitudes of the distances, which are 2 meters and 5 meters, to get a total of 7 meters.

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12.

Find the total displacement traveled: 2 meters South and 5 meters South

Correct Answer
7 meters
7 m
7.0 meters
7.0 m

Explanation
The total displacement traveled is 7 meters because both distances are in the same direction (South) and can be added together.

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13.

Find the total distance traveled: 2 meters South and 5 meters North

Correct Answer
7 meters
7 m
7.0 meters
7.0 m

Explanation
The total distance traveled can be found by adding the distances traveled in each direction. In this case, the person traveled 2 meters south and then 5 meters north. Since the person traveled in opposite directions, the distance traveled is the difference between the two distances, which is 5 - 2 = 3 meters. Therefore, the correct answer is 7 meters, 7 m, 7.0 meters, 7.0 m.

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14.

Find the total displacement traveled: 2 meters South and 5 meters North

Correct Answer
3 meters
3 m
3.0 m
3.0 meters

Explanation
The total displacement traveled can be found by subtracting the distance traveled in the opposite direction from the distance traveled in the desired direction. In this case, 2 meters South and 5 meters North cancel each other out, resulting in a net displacement of 3 meters North. Therefore, the correct answer is 3 meters, 3 m, 3.0 m, or 3.0 meters.

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15.

Calculate the total displacement traveled (Hint: you may need graph paper): 4 meters North and 3 meters East

Correct Answer
5 meters
5 m
5.0 meters
5.0 m

Explanation
The total displacement traveled can be calculated using the Pythagorean theorem. The person traveled 4 meters north and 3 meters east, which forms a right triangle. The hypotenuse of this triangle represents the total displacement. By using the Pythagorean theorem (a^2 + b^2 = c^2), where a and b are the lengths of the legs of the triangle, we can find that the total displacement is 5 meters.

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