NOS Test Review

Science can answer all questions

• True

• False

Significant digits are the number of digits in a measurement that are known with a certain degree of reliability.

• True

• False

Media sources can repot information accurately, so skepticism is necessary.

• True

• False

Final zeros used before the decimal point are significant.

• True

• False

Balances measure masses of objects.

• True

• False

A pipette is a thin, rectangular piece of glass used to view items under a microscope.

• True

• False

Which of the following is NOT a branch of science?

• Earth

• biodiesel

• Life

• Physical

1.4 has 2 significant digits as a result of which rule?

• Zeros used solely for spacing the decimal point are not significant.

• All nonzero numbers are significant.

• Zeros between nonzero digits are significant.

• Final zeros after the decimal point are significant.

4.832 has 4 significant digits as a result of what rule?

• Zeros between nonzero digits are significant.

• All nonzero numbers are significant.

• Final zeros after the decimal point are significant.

• Zeros used solely for spacing the decimal point are not significant.

What digits are significant in 0.045?

• 0, 4, and 5 to the right of the decimal

• 4 and 5

• All digits are significant.

• Both zeros only.