Ch. 1: Nature of Science Review

What factor is not changed in an experiment?  

•  temperature
• independent variable
• dependent variable 
• control

To __________ something means to draw a conclusion based on what you observe.  

• infer
• theorize
• hypothesize
• guess

Tags

NGSS.HS-PS1-3

An experiment is a specific test of a __________.  

• variable
• control
• hypothesis
• theory

Which of the following questions is legitimate for science to consider? 

• Which type of orchid flower is most beautiful?
• How many seals can a killer whale consume per day? 
• When is religion better than philosophy?
• Is competition good or evil?

Tags

NGSS.MS-LS2-1

How does a scientist confirm data? 

•  by consulting with an expert in the field
• by making sure that technicians follow procedures properly
•  by checking calculations for errors
• by observing that repeating the experiment yields similar results

Tags

NGSS.HS-PS2-1

The test tubes in the image were left at room temperature for a week to see if algae would grow. Which of the following is the constant in the experiment?

• the amount of algae present
• )the temperature of the test tube's contents
• the amount of chlorine present
• the ratio of algae to chlorine

Tags

NGSS.MS-LS1-5

Which of the following is the independent variable in the experiment shown in the image?

• amount of chlorine used
• volume of water used
• length of time of the experiment
• temperature of the test tubes

Tags

NGSS.HS-PS1-5

Scientists conduct multiple trials of experiments... 

• to ensure experiments always have the same results
• to make the results more reliable
• to save money
• because it's more fun...duh!

A hypothesis must be:
 

• proven correct
•  testable
•  observed
•  experimental

The orchard sprayed with the chemical yields an average of 60 apples per tree, the other orchard yields an average of 40 apples per tree. Based on the data, the scientist could:

•  report their data
• test the chemical on other plants
•  determine that the chemical increases apple yield
•  determine that the results were inconclusive