1.
Select the base unit of the metric system for length.
Correct Answer
B. Meter
Explanation
The base unit of the metric system for length is the meter. The meter is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second. It is widely used for measuring distances and is the standard unit for length in most countries around the world. The other options, liter and gram, are units of volume and mass respectively, and not length.
2.
Select the base unit of the metric system for capacity (volume).
Correct Answer
B. Liter
Explanation
The liter is the base unit of the metric system for capacity or volume. It is commonly used to measure the amount of liquid or the capacity of containers. It is a unit of measurement that is easily understood and widely used in everyday life. Other units of capacity, such as milliliters or kiloliters, are derived from the liter.
3.
Select the base unit of the metric system for weight (mass).
Correct Answer
C. Gram
Explanation
The gram is the base unit of the metric system for weight (mass). It is defined as the mass of one cubic centimeter of water at its maximum density. The gram is commonly used to measure the mass of small objects or quantities of substances. It is a smaller unit compared to the kilogram, which is the base unit for mass in the International System of Units (SI).
4.
Which prefix means "1000 x (10 x 10 x 10) more than the unit"
Correct Answer
C. Kilo
Explanation
The prefix "kilo" means "1000 x (10 x 10 x 10) more than the unit." It is commonly used to denote a factor of 1000 or a thousand times greater than the base unit. For example, a kilogram is 1000 times heavier than a gram, and a kilometer is 1000 times longer than a meter.
5.
Which prefix means "10 x less than the unit?"
Correct Answer
A. Deci
Explanation
The prefix "deci" means "10 x less than the unit." In the metric system, "deci" represents a factor of 1/10 or 0.1. For example, a decimeter is 1/10th of a meter, and a deciliter is 1/10th of a liter. Therefore, "deci" is the correct prefix that represents "10 x less than the unit."
6.
Which prefix means "100 (10 x 10) times more than the unit?"
Correct Answer
C. Hecto
Explanation
The prefix "hecto" means "100 (10 x 10) times more than the unit." This prefix is commonly used in the metric system to indicate a multiple of 100. For example, a hectogram is 100 grams and a hectometer is 100 meters. Therefore, "hecto" is the correct prefix that represents a value that is 100 times greater than the unit.
7.
Which prefix means "1000 (10 x 10 x 10) x less than the unit?"
Correct Answer
A. Milli
Explanation
The prefix "milli" means one thousandth (1/1000) of the unit. Therefore, if something is "1000 x less than the unit," it means it is one thousandth of the unit, which is represented by the prefix "milli."
8.
If I convert UP the staircase I multiply.
Correct Answer
B. False
Explanation
This statement is incorrect. If someone converts UP the staircase, it does not imply multiplication. The act of converting UP the staircase simply means moving upward, usually by climbing the steps. There is no mathematical operation involved in this action. Therefore, the correct answer is False.
9.
If I convert DOWN the staircase I multiply.
Correct Answer
A. True
Explanation
The statement suggests that if someone converts down the staircase, they will multiply. However, without any additional context, it is difficult to determine what exactly is being multiplied. It is possible that the statement is referring to multiplying the number of steps or the length of the staircase. Without further information, it is impossible to provide a definitive explanation.
10.
As I convert up the staircase, the unit gets bigger but the number gets smaller.
Correct Answer
A. True
Explanation
As one moves up a staircase, the unit of measurement for each step increases (e.g. from inches to feet), but the actual number of steps decreases. This statement is true because as the unit gets bigger, the number of steps decreases.