Measurement 1

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

• 1.54 x 10^-12

• 1.54 x 10¹⁰

• 1.54 x 10^-10

The expression of 5008 km in scientific notation is ______

• 5.008 x 10³

• 5.008 x 10^-3

• 50.08 x 10^-4

• 5.008 x 10⁴

What is the result of multiplying 2.5 x 10¹⁰ by 3.5 x 10^-7

• 8.75 x 10 ^-3

• 8.75 x 10¹⁷

• 8.75 x 10 ³

• 8.75 x 10 ^-17

The closeness of a measurement to its true value is a measure of its__________

• precision

• accuracy

• reproducibility

• usefulness

Tags

NGSS.HS-PS2-1

Which of the following measurements contains two significant figures?

• 0.00400 L

• 0.00404 L

• 0.00044 L

• 0.00440 L

Which of the following measurements (of different masses) is the most accurate?

• 3.1000 g

• 3.10000 g

• 3.12222g

• 3.000000g

Narrowness of range of measurements is_________

• accuracy

• precision

• significant figures

• mass

Known or estimated in a measurement

• accuracy

• precision

• significant figure

• mass

Tags

NGSS.HS-PS1-7

NGSS.HS-PS2-1

The quantity of matter an object contains

• absolute zero

• weight

• mass

• accuracy

Tags

NGSS.HS-PS2-1

The lowest point on the Kelvin scale

• weight

• absolute zero

• super zero

• super cold