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Distance

The length of the route between two points and it's SI unit of measurement.

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Distance

Do you participate in track like the boys pictured here? If not, you may have attended a track meet. The boys in the picture are running a 100-meter sprint. Running events in track are named for their distance.

What Is Distance?

Distance is the length of the route between two points. The distance of a race, for example, is the length of the track between the starting and finishing lines. In a 100-meter sprint, that distance is 100 meters.

SI Unit for Distance

The SI unit for distance is the meter (m). Short distances may be measured in centimeters (cm), and long distances may be measured in kilometers (km). For example, you might measure the distance from the bottom to the top of a sheet of paper in centimeters and the distance from your house to your school in kilometers.

Using Maps to Measure Distance

Maps can often be used to measure distance. The map in the Figure below shows the route from Jordan’s house to his school. You can use the scale at the bottom of the map to measure the distance between these two points.

Distance is an important component of maps

Q: What is the distance from Jordan’s house to his school?

A: The distance is 2 kilometers.

Summary

  • Distance is the length of the route between two points.
  • The SI unit for distance is the meter.
  • The scale of a map can be used to find the distance between different locations.

Review

  1. Define distance.
  2. What is the SI unit for distance? Give an example of something you might measure in this unit.
  3. Runners in different lanes on an oval racetrack have different starting marks. Explain why.
  4. On the map in the Figure above, what is the distance between Jordan’s house and the park?

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Vocabulary

TermDefinition
distance Length of the route between two points.

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