Worksheet: Representing Large Values of Physical Quantities

In this worksheet, we will practice using scientific notation and unit prefixes to multiply and divide values of physical quantities by various powers of ten.

Q1:

A block of ice is heated with 3.25×10 J of energy. What is the number of joules of energy supplied, expressed in decimal form?

Q2:

Which of the following is the number of hertz in a gigahertz (GHz)?

  • A10 Hz
  • B10 Hz
  • C10 Hz
  • D10 Hz
  • E10 Hz

Q3:

Which of the following is the number of watts in a terawatt (TW)?

  • A10 W
  • B10 W
  • C10 W
  • D10 W
  • E10 W

Q4:

Which of the following is the number of nanoseconds (ns) in a second?

  • A10 ns
  • B10 ns
  • C10 ns
  • D10 ns
  • E10 ns

Q5:

Which of the following is the number of femtometers (fm) in a meter?

  • A10 fm
  • B10 fm
  • C10 fm
  • D10 fm
  • E10 fm

Q6:

There are 225,000 atoms in a dust cloud in deep space. What is the number of atoms in the dust cloud, expressed in scientific notation to two decimal places?

  • A2.25×10
  • B2.25×10
  • C2.25×10
  • D2.25×10
  • E2.25×10

Q7:

A building contains 3×10 bricks. What is the number of bricks in the building, expressed in decimal form?

Q8:

A road is 0.75×10 m long. Which of the following is the equal to the length of the road?

  • A750 m
  • B7,500 m
  • C75,000 m
  • D750,000 m
  • E75 m

Q9:

Which of the following is the number of picojoules (pJ) in a joule?

  • A10 pJ
  • B10 pJ
  • C10 pJ
  • D10 pJ
  • E10 pJ

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