C2: Dimensional Analysis and Scientific Notation Quiz

What is dimensional analysis?

• A method to measure the dimensions of an object.

• A method to convert one unit of measurement to another using conversion factors.

• A method to analyze the dimensions of a room.

What is a conversion factor?

• A number used to multiply or divide a quantity when converting from one unit to another.

• A factor that changes the shape of an object.

• A factor that determines the color of a substance.

Which of the following is an example of a conversion factor?

• 1 inch = 2.54 centimeters

• 1 liter = 1000 grams

• 1 meter = 1000 kilograms

Why is scientific notation important?

• It makes it easier to write and work with very large or very small numbers.

• It changes the units of measurement.

• It helps in measuring the dimensions of objects.

How is the number 5,000,000 written in scientific notation?

• 5×10^5

• 5×10^6

• 5×10^7

How is the number 0.00045 written in scientific notation?

• 4.5×10^−4

• 4.5×10^−5

• 4.5×10^−6

What is the standard notation for 3.2×10^3?

• 320

• 3200

• 32000

What is the standard notation for 7.5×10^−2?

• 0.075

• 0.75

• 7.5

Convert 21 days into seconds.

• 1,814,400 seconds

• 1,209,600 seconds

• 1,814,000 seconds

Convert 9,460 grams into pounds.

• 20.86 pounds

• 20.85 pounds

• 20.84 pounds