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What is the base unit for measuring distance in the metric system?
A.
Gram
B.
Liter
C.
Meter
D.
Seconds
Correct Answer C. Meter
Explanation The base unit for measuring distance in the metric system is the meter. The meter is defined as the length of the path traveled by light in a vacuum during a specific time interval. It is commonly used to measure distances in everyday life, as well as in scientific and industrial applications. The gram is the base unit for measuring mass, the liter is the base unit for measuring volume, and seconds are the base unit for measuring time.
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2.
What is the base unit for measuring mass in the metric system?
A.
Kilogram
B.
Liter
C.
Meter
D.
Seconds
Correct Answer A. Kilogram
Explanation The kilogram is the base unit for measuring mass in the metric system. It is defined as the mass of the International Prototype of the Kilogram, a platinum-iridium cylinder kept at the International Bureau of Weights and Measures. The kilogram is widely used in scientific and everyday applications to measure the mass of objects. The other options, liter, meter, and seconds, are not base units for measuring mass in the metric system.
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3.
What is the base unit for measuring volume in the metric system?
A.
Meter
B.
Seconds
C.
Liter
D.
Gram
Correct Answer C. Liter
Explanation The base unit for measuring volume in the metric system is the liter. The liter is a unit of capacity or volume, commonly used to measure liquids. It is equal to 1,000 cubic centimeters or one cubic decimeter. The liter is widely used in everyday life for measuring quantities of liquids such as water, milk, or gasoline. It is a convenient unit for measuring volumes of substances due to its practical size.
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4.
What is the base unit for measuring time in the metric system?
A.
Meter
B.
Seconds
C.
Liter
D.
Gram
Correct Answer B. Seconds
Explanation The base unit for measuring time in the metric system is seconds. The metric system is based on a decimal system, and seconds are used to measure the duration of time. Meters are used to measure length, liters are used to measure volume, and grams are used to measure mass. However, when it comes to time, the metric system uses seconds as the base unit.
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5.
Which scale is best for measuring the length of a ladybug?
A.
Millimeters
B.
Centimeters
C.
Meters
D.
Kilometers
Correct Answer A. Millimeters
Explanation Millimeters is the best scale for measuring the length of a ladybug because ladybugs are very small insects, typically measuring between 1 to 10 millimeters in length. Millimeters provide a more precise measurement compared to centimeters, meters, or kilometers, which are better suited for larger objects.
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6.
Which scale is best for measuring the length of a truck?
A.
Millimeter
B.
Centimeters
C.
Meters
D.
Kilometers
Correct Answer C. Meters
Explanation Meters is the best scale for measuring the length of a truck because it provides a more appropriate and practical unit of measurement for objects of that size. Millimeters and centimeters would be too small and not practical for measuring the length of a truck, while kilometers would be too large and not precise enough. Meters strike a balance between being precise enough for accurate measurements and being a practical unit for measuring the length of a truck.
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7.
How many grams in 4 kilograms?
A.
4 grams
B.
40 grams
C.
400 grams
D.
4000 grams
Correct Answer D. 4000 grams
Explanation The correct answer is 4000 grams because there are 1000 grams in 1 kilogram. Therefore, to convert 4 kilograms to grams, we multiply 4 by 1000, resulting in 4000 grams.
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8.
How many kilograms in 8000 grams?
A.
.0008 kilograms
B.
8 kilograms
C.
80 kilograms
D.
800 kilograms
Correct Answer B. 8 kilograms
Explanation There are 1000 grams in a kilogram. So to convert grams to kilograms, we divide the number of grams by 1000. In this case, 8000 grams divided by 1000 equals 8 kilograms. Therefore, the correct answer is 8 kilograms.
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9.
Estimate the height of an average adult male in meters.
A.
0.5 meters
B.
1 meter
C.
1.5 meters
D.
2 meters
E.
3 meters
Correct Answer(s) C. 1.5 meters D. 2 meters
Explanation The correct answer is 1.5 meters, 2 meters. This is because the average height of an adult male is typically between 1.5 and 2 meters.
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10.
How many seconds in a day?
Correct Answer(s) 86,400
Explanation There are 24 hours in a day, and each hour has 60 minutes. Therefore, to find the number of seconds in a day, we multiply 24 by 60 to get 1,440 minutes. Since each minute has 60 seconds, we multiply 1,440 by 60 to get 86,400 seconds.
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