Nature of Science 7th

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

• The type of plant
• The amount of sunlight
• The type of music
• The type of liquid

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Scientists frequently repeat the experiments of others scientists. Why is this important in science?

• Scientists often ask each other for help in performing experiments.

• Replication of experiments helps to confirm and verify results.

• Scientists frequently perform other scientists’ experiments in order to practice their technique.

• Repeating experiments is an effective way to make sure a laboratory is in optimal condition.

What step does every scientific experiment begin with?

• hypothesis

• question/problem

• procedures

• conclusion

The independent variable is the ONE thing you _____.

• change on purpose
• control or keep constant
• measure

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

The variable that is being measured or observed is called the _______________. Hint: this is the variable that is the result or effect

• independent variable

• dependent variable

• control variable

Tags

NGSS.MS-PS2-2

Newton’s third law of motion states that for every action there is an equal and opposite reaction. How does this law differ from a theory?

• A theory explains a set of well tested observations; a law describes a pattern in nature.
• Laws can be changed with the addition of new evidence but theories cannot.
• A law explains a pattern in nature in more detail than a theory. 
• Theories are based on more evidence than laws.

Tags

NGSS.MS-PS2-1

Which picture shows an observational science (no variables or experimentation)?

• 
• 
• 

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Which picture shows an experimental science (variables and experimentation)

• 
• 
• 

Tags

NGSS.MS-PS1-2

In a controlled experiment, which is the variable that the scientist changes?

• model
• independent variable
• dependent variable
• inference

What skill is a scientist using when she listens to the sounds that whales makes?

• making observations
• interpreting data
• making a hypothesis
• drawing conclusions