Scientific Investigations Review

What is this?

• The Scientific Method

• The Metric System

• The Classification Method

• The Engineering Design Method

This tool measures volume.

• Graduated cylinder

• Triple beam balance

• Thermometer

• Ruler

This tool measures temperature.

• Graduated cylinder

• Triple beam balance

• Thermometer

• Ruler

We used these units when measuring mass.

• Milliliters (mL)

• Centimeters (cm)

• Degrees Celsius (°C)

• Grams (g)

Experiments are often repeated many times by the same or different scientists. What is the most important reason more than one scientist should conduct an investigation using the same methods?

• a

• b

• c

• d

Scientists have several ways for evaluating the validity of experimental results. Which of the following is a characteristic shared by all valid scientific investigations?

• The experiments must be long.

• The experiment must produce replicable results.

• The experiment must yield the desired results.

• The experiment must be complex.

Tags

NGSS.MS-PS1-2

Park rangers count the number of rattlesnakes observed along a specific trail at different times during the year. They use this information to let campers know when it is safer to go off path.

• Descriptive

  Investigation

• Comparative

  Investigation

• Experimental

  Investigation

Tags

NGSS.MS-LS2-1

How are EXPERIMENTAL and COMPARATIVE investigations different?

• * EXPERIMENTAL requires control / control group.

  * COMPARATIVE does not require control / control group.

• * EXPERIMENTAL requires variables .

  * COMPARATIVE does not require variables.

An engineer performs an experiment and asks other engineers around the country to replicate the results. WHy would other engineers most likely try to perform the same experiment?

•   To find out if weather of various regions of the world would affect the results.

• To see if the experiment would be less expensive in another part of the world.

• To confirm the results of the experiment conducted by the engineers

•   To verify that the hypothesis of the experiment is a scientific law

Tags

NGSS.MS-PS1-2

Which of the following reasons best explains why Pierre's scientific investigation is not an experiment?