Measurement, uncertainty, and scientific notation

Random errors lead to a lack of:

• accuracy in the measurement.

• significant digits in the measurement.

• precision in the measurement.

• gradation of the measuring instrument

length?

• 3.2 cm

• 3.12 cm

• 3 cm

• 3.219 cm

What is 67,490 rounded to 2 significant figures?

• 67 500
• 60 000
• 68,000
• 67, 000

How many significant figures are in the measurement 0.0570 min?

• 2

• 3

• 4

• 5

How would you write 564,000,000 in scientific notation?

• 5.64 x 10^-7
• 5.64 x 10⁶
• 5.64 x 10⁸
• 56.4 x 10⁷

What is the temperature and uncertainty indicated by this thermometer?

• 24.1 ± 0.5 °C

• 24.05 ± 0.05 °C

• 24 ± 1 °C

• 28.0 ± 0.1°C

What is the mass?

• 272.1 cm
• 270.2 g
• 272.1 g
• 270.1 g

Tags

NGSS.HS-PS1-7

How can you read the measurement result below?

• 1,26 mm

• 1,27 cm

• 1,16 cm

• 1,17 cm

• 1,17 mm

Systematic errors lead to a lack of:

• accuracy in the measurement.

• significant digits in the measurement.

• precision in the measurement.

• gradation of the measuring instrument

Read the screw micrometer shown below!

• 5,25 cm

• 5,74 mm

• 7,54 cm

• 7,52 mm

• 7,74 mm