1.
Which of the following is NOT an SI unit of measure?
Correct Answer
C. Foot
Explanation
The foot is not an SI unit of measure. The International System of Units (SI) is a globally recognized system for measurement that is used in science, industry, and everyday life. It is based on seven base units, including the kilogram for mass, the meter for length, and the second for time. The foot, on the other hand, is a non-SI unit commonly used in the United States and a few other countries to measure length.
2.
Which of the following prefixes will multiply the unit by 1,000?
Correct Answer
A. Kilo-
Explanation
The prefix "kilo-" indicates multiplication by 1,000. Therefore, when this prefix is added to a unit, it increases the value of the unit by a factor of 1,000.
3.
Which of the following are English units of measure?
Correct Answer
D. All of the above
Explanation
All of the given options - foot, pound, and second - are English units of measure. The foot is a unit of length, the pound is a unit of weight, and the second is a unit of time. Therefore, all three options are correct.
4.
The liter is an International System (SI) measure of:
Correct Answer
B. Volume
Explanation
The liter is a unit of measurement used to quantify volume. It is part of the International System of Units (SI) and is commonly used to measure the capacity of liquids. One liter is equal to 1000 milliliters or 0.001 cubic meters. It is widely used in everyday life to measure the volume of beverages, containers, and other liquids.
5.
You are given an object weighing 10 kilograms. What is the mass in English units?
Correct Answer
B. 22 pounds
Explanation
The mass of the object is 10 kilograms. To convert kilograms to pounds, we can use the conversion factor of 1 kilogram = 2.2 pounds. Therefore, the mass of the object in English units is 22 pounds.
6.
Your coach tells the team that practice will include a 5-kilometer "fun" run. How many miles will you be running for "fun?"
Correct Answer
C. 3.1 miles
Explanation
The correct answer is 3.1 miles. This is because 5 kilometers is equivalent to 3.1 miles.
7.
While traveling in Canada, a police officer pulls you over for speeding. The posted speed limit is 100 kilometers per hour. She asks you if you know how fast you were driving. You suddenly realize that your speedometer's "100" measures miles per hour, not kilometers per hour. How fast were you going?
Correct Answer
D. 161 kilometers per hour
8.
Your friend wants to know his height using the SI system. He is six feet tall; what is the equivalent height in meters?
Correct Answer
A. 1.83 meters
Explanation
The correct answer is 1.83 meters. In the SI system, 1 meter is equal to approximately 3.28 feet. Therefore, to convert feet to meters, you divide the number of feet by 3.28. In this case, since your friend is 6 feet tall, you divide 6 by 3.28, which gives you approximately 1.83 meters.
9.
How many centimeters are there in one inch?
Correct Answer
C. 2.54
Explanation
One inch is equal to 2.54 centimeters. This conversion is a standard conversion used to convert measurements between the inch and centimeter units.
10.
When measuring time, a second in the SI system is the same as a second in the English system.
Correct Answer
A. True
Explanation
In the given statement, it is mentioned that a second in the SI system is the same as a second in the English system. This statement is true because both the SI system and the English system use the same unit of time measurement, which is the second. Therefore, regardless of the system being used, a second is universally defined as the same duration of time.