Chapter 2 Science, Matter and Energy

In 1963, Bormann and Likens compared the output of two river valleys, one forested and the other clear cut. What were their findings?

• The deforested valley had higher water flow and a decrease in nutrient loss.

• The forested valley had higher water flow and a decrease in nutrient loss.

• The forested valley had lower water flow and increase in nutrient loss.

• The deforested valley had lower water flow and increase in nutrient loss.

• The deforested valley had higher water flow and increase in nutrient loss.

Tags

NGSS.MS-LS2-1

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What is the definition of a scientific hypothesis?

• A simulation of a system being studied

• A possible explanation for an observation or experimentation

• The data needed to answer a question

• Procedures carried out under controlled conditions to gather information

• A widely accepted theory

When an overwhelming body of observations and measurements supports a scientific hypothesis or group of related hypotheses, it becomes a(n) ____.

• hypothesis

• scientific law

• scientific variable

• scientific theory

• conclusion

What is a well-tested and widely accepted description of what scientists find happening repeatedly in nature in the same way?

• theory

• scientific law

• hypothesis

• conclusion

• model

What is the correct order of applying the scientific process to a problem?

• hypothesis−question−observation−experimentation−conclusion−analysis

• hypothesis−conclusion−question−observation−experimentation−analysis

• observation−hypothesis−conclusion−experimentation−analysis−question

• observation−question−hypothesis−experimentation−analysis−conclusion

• hypothesis−experimentation−observation−analysis−question−conclusion

Tags

NGSS.MS-PS2-2

Which of the following is an example of an organic compound?

• H₂O

• NaCl

• H₂SO₄

• N₂O

• C₆H₁₂0₆

Tags

NGSS.HS-LS1-6

Complex carbohydrates are a type of ____.

• lipid

• chemical formula

• monomer

• protein

• organic polymer

Tags

NGSS.MS-PS1-1

What is the distinct piece of DNA containing instructions for making proteins?

• chromosome

• nucleotide

• gene

• cell membrane

• hydrocarbon

Tags

NGSS.MS-LS3-1

What is the fundamental structural and functional unit of life?

• atom

• macromolecule

• DNA

• cell

• organism

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What is the fundamental structural and functional unit of life?

• atom

• macromolecule

• DNA

• cell

• organism

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2