Unit 2 Review pt. 2

What is the primary objective of conducting an experiment?

• To validate a theory

• To showcase a universally accepted fact

• To discover new information or test an assumption

• To formulate a new assumption or guess

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS1-2

Which best describes a hypothesis, a theory, and a law?

• An educated guess, a broad concept, and a mere suggestion.

• An educated guess, explains why something happens, and a fundamental principle of nature.

• A natural principle, a mere suggestion, and a broad concept.

• Both an educated guess and a theory are natural principles, while a law is a broad concept.

In the context of a graduated cylinder, what does the term 'meniscus' denote?

• The base of the cylinder

• The quantity of the fluid

• The curved surface of the liquid

• The measurement scale on the cylinder

If you were to determine the volume of a pebble using the water displacement method, how would you proceed?

• Measure the pebble's circumference

• Observe the water rise upon introducing the pebble

• Weigh the pebble and then factor in its density

• Note the water level prior and post adding the pebble, then compute the difference

Given that 2.05g of a gas fills up 175mL, what's its density?

• 2.05 g/mL

• 0.0117 g/mL

• 177 g/mL

• 11.7 g/mL

How would you express 230cm in meters?

• 2.30m

• 23.0m

• 2300m

• 0.230m

Translate 110mm into meters.

• 0.11m

• 110m

• 11m

• 0.011m

Express the number 0.006 using scientific notation.

• 6 x 10^3

• 0.6 x 10^2

• 6 x 10^-3

• 60 x 10^-2

Decode 9.4 x 10^6 into a standard number format.

• 9,400,000

• 940,000,000

• 94,000

• 940,000