Sig Figs Test

The kilogram is defined by a hunk of platinum and iridium known as the _____

• Standard Unit Kilogram
• Kilogram of Science
• International Prototype Kilogram
• Platinum Iridium Kilogram

In the International System of Units, how many derived units are possible?

• seven
• 21
• 6.02 x 10²³
• an infinite number

Which quantity has the units of length divided by time?

• distance
• speed
• acceleration
• displacement

Which of the standard base units is derived from an actual value though not a universal one?

• the meter
• the ampere
• the second
• the mole

Conversion factors are used, as needed, so the units we don't want _____

• cancel out
• end up in the denominator
• end up in the numerator
• are in our answer when we're done

Which type of number can be counted, like the number of eggs in a dozen?

• approximate numbers
• exact numbers
• rational numbers
• measured numbers

Which type of number is estimated to a certain number of sig figs, like a car's speed?

• irrational numbers
• exact numbers
• whole numbers
• measured numbers

Significant figures are the digits in your number that _____

• are after the decimal place
• include zero
• you actually know
• are placeholders

For addition or subtraction, the number of sig figs in the answer is determined by _____

• the number with the most figures after the decimal point
• the number with the fewest figures after the decimal point
• the total number of figures after the decimal point
• the number of trailing zeros

For multiplication, just make sure the answer has the same sig figs as _____

• your last number
• your most precise measurement
• your least precise measurement
• your first number