(Savvas 1.3) Organizing Data IV Part 2 (Holt 1.3b)

Why are significant figures important in science?

• They are used to measure time.

• They help in counting objects.

• They simplify mathematical calculations.

• They indicate the precision of measurements.

What do significant figures communicate about an instrument?

• Its color

• Its size

• Its weight

• Its precision

What is the known digit in the measurement 0.12 meters?

• 2

• None

• 1

• 0

What is the estimated digit in the measurement 0.125 meters?

• 0

• 1

• 5

• 2

Which of the following is a rule for significant figures?

• All zeros are significant.

• All non-zero digits are significant.

• No digits are significant.

• Only the first digit is significant.

What are captured zeros?

• Zeros between non-zero digits

• Zeros at the end of a number

• Zeros at the beginning of a number

• Zeros after a decimal point

What is the significance of leading zeros?

• They are always significant.

• They are never significant.

• They are sometimes significant.

• They are significant only in whole numbers.

How many significant figures are in the number 0.007?

• 1

• 2

• 3

• 4

What is the rule for significant figures in multiplication and division?

• The result should have no significant figures.

• The result should have one more significant figure than the factors.

• The result should have as many significant figures as the factor with the least significant figures.

• The result should have as many significant figures as the factor with the most significant figures.

How many significant figures should the result of 37.26 + 2.7 have?

• 3

• 4

• 2

• 5