Vocabulary
What is a hypothesis?
an educated guess
Mr. McNiece wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. What control should be used when doing this experiment?
student's heart rates without music
Convert 500 mm to dm.
5
Write .205 in scientific notation.
2.05 * 10-1
What measurement system does the rest of the world use?
Metric
What is the control group?
group used for comparison; the 'normal'
In a hypothesis, you should see the words _____ and then.
If
What is the metric unit for length?
meters
Write 500 in scientific notation.
5*102
What is the metric unit of volume?
liters
What is the dependent variable?
the variable is that is measured
Squidward found new reeds to tryout for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. What was the independent variable?
The reed
Convert 600 mm to m.
.6
Write 3 x 104 in standard notation.
30,000
What is the experimental group?
the group that gets the special treatment (independent variable)
What is the variable that is changed by the scientist?
Independent Variable
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, what is the dependent variable?
Plant growth
How many milliliters are in 9 liters?
9000
Write 3.05*10-2 in standard notation
.0305
What is the metric unit for time?
seconds
What measurement system does the US use?
English/Imperial/Standard
How many variables do we change at a time? Why?
1 that way we know what actually led to our results
What is the metric unit for mass?
grams
Write 2 in scientific notation.
2*100
Why do we use the metric system in science?
So we can communicate easier with the scientists in other parts of the world