2. Metric System for Length

John, a diligent scientist, is conducting an experiment in his lab. He has a metal rod that he needs to measure for his experiment. Which unit from the metric system would John use as the base unit of length to measure the rod?

• inch

• meter

• kilometer

• centimeter

Imagine you're a scientist studying ants, and you've just measured an ant to be 1/100th of a meter long. Which metric prefix would you use to describe its length?

• centi

• deci

• milli

• kilo

John, a young boy, is playing with a ruler that measures in centimeters. He's looking at a 1 centimeter chocolate bar and wonders how many millimeters it would be. Can you help him figure it out?

• 10

• 100

• 1000

• 1

John, a marathon runner, is planning his training schedule. He's looking at a chart where distances are marked in a unique unit. Can you identify the abbreviation for this unit if it's a kilometer?

• km

• kilo

• kmh

• kmt

Imagine you're an athlete preparing for a 1,000 meters race in the upcoming Olympics! Can you identify the metric prefix that represents the distance you're about to run?

• kilo

• deci

• centi

• milli

John is a tailor and he has a piece of string that is 1 meter long. Can you tell how many centimeters long this piece of string is?

• 100

• 50

• 10

• 1000

John, a diligent carpenter, is working on a detailed piece of furniture. He needs to measure a small piece of wood accurately. Can you help him identify the abbreviation for millimeter?

• km

• mm

• cm

• in

Imagine you're a hair stylist like John, and you're curious about the thickness of the hair strands you work with every day. If you were to measure the thickness of a single strand of human hair, which metric prefix would you use if the thickness represents 1/1,000th of a meter?

• centi

• kilo

• micro

• milli

Imagine John is a professional athlete, preparing for an important 1 kilometer race in the Olympics. If he converts this distance into meters, how many meters do you think he will have to run?

• 500

• 100

• 10

• 1000

John is an architect and he's designing a miniature model of a building. He needs to use the right unit of measurement for the model's dimensions. Can you help him figure out the abbreviation for centimeter?

• in

• km

• mm

• cm