NOS Practice

John wants to prove that the paved area of the playground is hotter than the grassy area of the playground. He measures the temperature of each area at three different times of the school day and records the temperatures. He does this for five days in a row. Thomas wants to replicate John's experiment. Which statement describes a situation that could cause Thomas's data to vary from John's data?

• Thomas uses the same equipment that John used.

• 
  Thomas records the temperature data on a chart.

• Thomas measures the temperatures only on the sunny days.

• Thomas measures the temperatures of the paved area and the grassy area.

Tags

NGSS.MS-PS3-4

Which of these would BEST describe the difference between an experiment and a field study?

• 
  Experiments are much more important to science than field studies.

• 
  Experiments are always done by professional scientists, while field experiments can be done by anyone.

• 
  In a field study, it is easier to control the variables than in an experiment.

• In a field study, it is much harder to control variables than in an experiment.

In everyday life, a theory is an educated guess. In science a theory is

Responses

• 
  

• 
  an accepted claim.

• an unsubstantiated truth.

• 
  an unsubstantiated claim.

• a well-supported explanation.

Which of these statements does NOT describe a scientific theory?

• Newly discovered evidence may disprove a theory.

• 
  Descriptive accounts of how nature will behave under certain conditions.

• Scientific theories are frequently overturned by new evidence.

• New evidence changes one part of a theory, while leaving the big picture intact.

Review the statements. Which statement does NOT apply a scientific law?

• Scientific laws depend on observable evidence.

• Scientific laws can be broken.

• 
  Scientific laws focus on natural phenomena.

• 
  Scientific laws address cause/effect relationships.

Which observation is quantitative?

• 
  It is 5 cm long

• It is smooth

• 
  It looks red

• It is dry

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Mr. Zander used this model to show how water moves through the water cycle. It is a picture, so it cannot show everything about the water cycle. What is missing from this model?

• 
  how weather is part of the water cycle

• where water is stored when it is liquid

• what happens when liquid water turns into gas

• how long it takes water to go through the cycle

Tags

NGSS.MS-ESS2-4

An organized procedure to study something under controlled conditions is called:

Answer choices

• theory

• observation

• hypothesis

• experiment

Tags

NGSS.MS-PS1-2

 A testable idea or explanation that leads to scientific investigation based on prior knowledge is known as: 

Answer choices

• theory

• hypothesis

• experiment

• observation

Tags

NGSS.MS-LS1-5

What variable in an experiment is measured? - It is also called the responding variable.
For example: measuring the amount of mold on bread 

• Independent variable

• dependent variable

• control variable

• Operational variable

Tags

NGSS.MS-LS1-5