Review Concepts for Practice of Science

When a another scientist does someone's experiment to see if the results are valid?

• repetition
• replication
• experimental method
• controlled variable

Scientists have MANY trials so their results are 

• countable
• graphable
• reliable
• hard to understand

Molly reads in a science journal that replication and repetition are so important, but she did not understand the  difference between them. Which of the following best explains the two terms?

• Repetition is when a scientist repeats an experiment; replication is when a scientist conducts an experiment on genetic material.
• Repetition is when a scientist does the same experiment a number of times; replication is when other scientists reproduce a scientist’s experiment.
• Repetition is when a scientist publishes in more than one scientific periodical; replication is when another scientist reproduces another scientist’s results.
• Repetition is when a scientist commits an error in an experiment the first time and must repeat it; replication is when a scientist repeats an experiment to make sure it is valid.

Madelyn goes to Silver River each week for 4 weeks and collects 5 samples of water to test the pH.

• repetition
• replication

Dr. Patterson has been reading about another scientist’s research in a physics journal. He plans to do these experiments himself and see if he gets the same result.

• repetition
• replication

A test is conducted to test how different cleats change an athletes running speed.  Six different types of cleats are tested and the 100m run time is recorded.

• Experiment
• Investigation (but no experiment)
• Technology development

Give some voters touchscreen machines and some voters paper ballots. Compare voter satisfaction levels for the two groups. 

• Experiment
• Investigation (but no experiment)
• Technology development

A crafty mountain lion from the Santa Monica Mountains has crossed the Ventura (101) Freeway. The National Park Service confirmed the rare event. The lion's successful freeway crossing is only the fourth ever since wildlife experts have been keeping track using GPS technology in a study that began 15 years ago.

• Experiment

• Investigation (but no experiment)

• Technology development

What is the scale of the set of data?

• 0-80

• 65

• 20-80

• 55

The Independent Variable is represented on which Axis?

• A

• X

• B

• Y