Units and Powers of 10

Pre-Test

Remember, this pre-test is designed to see if you already have the skills that are covered in this tutorial, so that you don't waste time. Peeking at the answers will do you no good! Work out the problems below on a separate sheet of paper and then check the answers. If you don't even have an idea of how to work the problems, then you should go right to the tutorial.

 

  1. Classify the following as a unit of "length," "time," or "mass."

    1. second

    2. kilogram

    3. millimeter

    4. mile

  2. You are given the following information:

    1 foot = 12 inches

    1 yard = 3 feet

    1 meter = 1.0936 yards

    1 kilometer = 1000 meters

    1 meter = 100 centimeters

    1 kilometer = 0.6214 miles

    1. How many yards are in a kilometer?

    2. How many centimeters in a foot?

    3. How many centimeters in a kilometer?

    4. How mahy meters in a mile?

    5. How many inches in a mile?

  3. The formula for velocity is given as velocity = distance /time. If the units of distance are meters, and the units of time are seconds, what is the unit of velocity?

  4. The basic unit of force is the newton, and the basic formula for force is F = m X a, where m is the mass, measured in kilograms, and a is the acceleration, measured in meters / (second)2. What is a newton, expressed in basic units of length, mass, and time?

  5. For the pairs below, pick the larger unit.

    1. centimeter and meter

    2. gram and kilogram

    3. liter and milliliter

    4. watts and Gigawatts

  6. Solve the following:

    1. How many Hertz are in 989 Megahertz?

    2. How many meters are in 12,659 millimeters?

    3. How many grams are in 22 kilograms?

    4. How many feet per second in 200 miles/hour? (Hint: There are 5280 feet in a mile, and 3600 seconds in an hour.)

    5. The formula for the volume of a cube is volume = length X width X height. If a box is 10 centimeters wide, 50 centmeters long, and 20 centimeters high, what is the volume of that box? Be sure to give the proper units!

Now you can check your answers

 

 

Questions? Ask the designer, Jim Heath

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