Scientific Notation Estimate Length

Question 6

• A

• B

• C

• D

Convert 9.8 x 10^-6 to standard form.

• 0.0000098

• 9800000

• 0.98 x 10^-5

• 0.00098 x 10^-6

The diameter of a carbon atom is 0.000 000 000 154 m. What is this number expressed in scientific notation?

• 1.54 x 10¹² m

• 1.54 x 10^-12 m

• 1.54 x 10¹⁰ m

• 1.54 x 10^-10 m

3.46 x 10^-6 = ___________________.

• 0.000000346

• 0.0000346

• 0.00000346

• 0.000346

The diameter of a speck of dust is about 0.00002 inches. Which of these is an appropriate estimate for the diameter of the speck of dust?

• 2 × 10^–5 in.

• 2 × 10^–4 in.

• 2 × 10⁵ in.

A bacteria cell has a diameter of .00031 cm. Which expression is the best estimate for the diameter of the bacteria cell?

The diameter of the planet Mercury is approximately 3 x 10³ miles. The diameter of the planet Jupiter is approximately 30 times as large as the diameter of the planet Mercury. Which of the following is the best estimate for the diameter of Jupiter?

• 9 x 10⁵ miles

• 9 x 10⁴ miles

• 1 x 10⁴ miles

• 1 x 10⁵ miles

A possible wavelength for the color blue is 0.000000492 meter. Which of the following is a reasonable estimate for this wavelength for the color blue.

• 5x10⁶ m

• 5x10⁷ m

• 5x10^-6 m

• 5x10^-7 m

What can (2.5 x 10^8) be estimated as for easier comparison in scientific notation?

• (2 x 10^8)

• (3 x 10^8)

• (2.5 x 10^7)

• (3 x 10^9)

How would you write 5.6 x 10^-3 in standard form?

• 5,600

• 0.00506

• 0.0056

• 0.00056