Measurement & Calculation Practice Test

Identify the independent variable in an experiment designed to study the effect of sunlight on plant growth.

• sunlight

• plant growth

• plants kept under sun lamps

• plants getting normal sun

Tags

NGSS.MS-LS1-5

Identify the control group in an experiment designed to study climate change.

• Today's temperature

• carbon dioxide levels

• the average climate conditions for the last 100 years

• today's ocean levels

A law differs from a hypothesis in that a law

• cannot be disproved

• always leads to the formation of a theory

• has been subjected to experimental testing

• represents an educated guess

Which of the following is not part of the scientific method?

• making measurements

• imagination

• introducing bias

• analyzing data

Tags

NGSS.HS-PS2-5

You've decided to test the effects of 5 different conditioners on different hair types. What is the dependent variable you are testing?

• Type of hair

• Color of hair

• Type of conditioner

• Hair health

Which of the following masses is the smallest?

• 0.500 g

• 0.050 kg

• 50.0 mg

• 5000 dg 

Which of the following measurements contains three significant figures?

• 300

• 30.0

• 0.030

• 300.0

All measurements in science

• must be expressed in scientific notation

• have some degree of uncertainty

• are both accurate and precise

• only express digits with known certainty

When numbers are added or subtracted, you use the

• least amount of decimal places

• most amount of decimal places

• least amount of sig figs

• most amount of sig figs

The precision of a measurement

• refers to the closeness of a set of measurements

• does not depend on the instrument used to measure the object

• indicates the measurement is also accurate

• is something tht scientists rarely achieve