Sect 1.1 and 1.2 for CK 12 Biology

A/an _____ is a special type of scientific investigation that is performed under controlled conditions typically including an independent and dependent variable. (2)

• scientific investigation

• hypothesis

• experiment

• inferrence

Science is a distinctive way to gain knowledge about the _____. (2)

• natural world

• experiment

• phenomenon

• solved problems

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS2-3

The measured variable in an experiment is always the _____ variable.

• independent

• manipulated

• controlled

• dependent

_____ is the degree to which repeated measurements under the same conditions show the same results.

• data

• accuracy

• precision

• experimental error

Experimental _____ is a factor that can arise from the incorrect use of measuring tools or malfunctioning equipment.

• bias

• accuracy

• error

• precision

Tags

NGSS.MS-PS2-5

The _____ the sample size in an experiment the more likely the results are true and correct.

• larger
• smaller

The _____ is the measure of how close a calculated or measured quantity is to its actual value.

• precision

• accuracy

• data

• experimental error

Scientists use the principles of their _____ to make predictions. A _____ is also a proposed solution to a problem to test by experiment.

• hypothesis
• scientific investigation

• inferrence

• theory

Tags

NGSS.MS-LS1-5

A/an _____ variable is a single changeable variable in an experiment. (2)

• controlled

• independent

• dependent

• manipulated

What is a controlled variable?

• a variable that is measured in an experiment

• a variable that is changed to test a hypothesis

• a variable that is tested in an experiment

• a variable that remains constant through all trials of an experiment