Variables

A bar graph is used

• to show how something changes over time.

• comparing things, such as how fast animals can run.

• to show proportional data.

• to see if one variable is related to another

A scatter plot is used

• to see if one variable is related to another

• to show how something changes over time.

• for comparing things, such as how fast animals can run.

• to show proportional data.

Tags

NGSS.MS-PS3-1

Which of the histograms below corresponds to the data table shown

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A scientist is interested in the effects of caffeine on our ability to estimate time. If the scientist conducts a controlled experiment, which of the following statements is true?

• The type of feedback and amount of feedback each subject is given during the test should be the same.

• The amount of caffeine each subject consumes before the test should be the same.

• Neither A nor B is true.

• Both A and B are true.

What is Experimental Design (the ‘Scientific Method’) and what is it used to accomplish?

• The Scientific Method is a way of seeing the world .

• The Scientific Method is Step by step process that must always be followed in order.

• The Scientific Method is used to prove things wrong.

• The Scientific Method is a logical, consistent process for stating and solving problems in the natural world.

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What system is used to take measurements in all science classes?

• The International System of Units (SI)

• The metric system

• The British imperial system

• The United States customary System

If you were to create a bar graph using this data What would you title the X axis? What would you title the Y Axis? What would you title your graph?

Tags

NGSS.MS-LS2-1

A student wants to determine the effect of soil type on plant growth. He sets up three pots as shown below. How could this experiment be improved?

• A. All three pots should have the same kind of soil.

• B. All three pots should have the same kind of seed, the same amount of light, and the same amount of water.

• C. The three pots should have different amounts of water.

• D. There is nothing wrong with this experiment.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Interpret: Based on this graph, will studying help you do well on a test? Explain.

Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle. What is the Independent variable in the experiment?

• How fast the students put together the puzzle.

• The type of jigsaw puzzle

• The different ages of the students

• The height of the students