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 . 2 5 × 1 0 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)?

  • A 1 0 Hz
  • B 1 0 Hz
  • C 1 0 Hz
  • D 1 0 Hz
  • E 1 0 Hz

Q3:

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

  • A 1 0 W
  • B 1 0 W
  • C 1 0 W
  • D 1 0 W
  • E 1 0 W

Q4:

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

  • A 1 0 ns
  • B 1 0 ns
  • C 1 0 ns
  • D 1 0 ns
  • E 1 0 ns

Q5:

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

  • A 1 0 fm
  • B 1 0 fm
  • C 1 0 fm
  • D 1 0 fm
  • E 1 0 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?

  • A 2 . 2 5 × 1 0
  • B 2 . 2 5 × 1 0
  • C 2 . 2 5 × 1 0
  • D 2 . 2 5 × 1 0
  • E 2 . 2 5 × 1 0

Q7:

A building contains 3 × 1 0 bricks. What is the number of bricks in the building, expressed in decimal form?

  • A300
  • B 30,000
  • C 3,000,000
  • D 3,000
  • E 300,000

Q8:

A road is 0 . 7 5 × 1 0 m long. What is the length of the road, expressed in decimal form?

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