Dimensional Analysis and Scientific Notation Quiz

What is the main purpose of dimensional analysis?

• To convert numbers into different units without changing their value

• To change the value of a number

• To measure the weight of objects

• To simplify mathematical equations

Which of the following is a correct conversion factor for hours and days?

• 1 day = 12 hours

• 60 minutes = 1 hour

• 1 hour = 60 minutes

• 24 hours = 1 day

How can you write 12 inches equals 1 foot as a fraction?

• Neither A nor B

• 12 inches / 1 foot

• 1 foot / 12 inches

• Both A and B

What is the first step in applying dimensional analysis to a problem?

• Draw a picket fence

• Write down the given number with its unit

• Multiply the top line across

• Divide the top and bottom

In the example of converting minutes in a year, how many conversion factors were used?

• Three

• Four

• Two

• One

What is the purpose of using a reference sheet in dimensional analysis?

• To have a quick reference for conversion factors

• To memorize all conversion factors

• To avoid using conversion factors

• To calculate the weight of objects

How many feet are there in 411 centimeters according to the example?

• 12.5 feet

• 13.5 feet

• 14.5 feet

• 15.5 feet

What is the main purpose of scientific notation?

• To convert numbers into different units

• To measure the volume of liquids

• To make large or small numbers easier to read and work with

• To simplify fractions

Convert 101,000 into scientific notation.

• 1.01 x 10^6

• 1.01 x 10^4

• 1.01 x 10^3

• 1.01 x 10^5

What is 0.0098 in scientific notation?

• 9.8 x 10^-2

• 9.8 x 10^-3

• 9.8 x 10^-5

• 9.8 x 10^-4