AICE Marine Science- Midterm Review (Ch1,2)

In order to be accepted, a scientific theory must be

•  widely tested and supported by extensive data
•  based on the results of a single experiment
•  controversial and cause debate
•  in line with all previous historical ideas

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

In an appropriately designed experiment, a scientist is able to test the effect of

•  a single variable
•  multiple variables
•  the hypothesis
•  scientific observations

Tags

NGSS.HS-PS1-3

In a hypothesis written in the "If, then" format, which variable comes first?

• Independent
• Dependent

The easy way to pick out an experiments responding (DV) variable is to look for:

• What was purposefully changed
• Number of trials
• What's being measured
• The test group

The control group , or the normal group, is needed for:

• Keeping aspects of experiment constant

• Comparison

• Hypothesis formation

• Application of the manipulated variable

Experiments include many trials, since:

• It's fun

• Scientists like to stay busy

• More trials ensure the hypothesis is ALWAYS correct

• More trials increase accuracy of results

If I add sliced garlic to my aquarium water, then my fish will eat a lot. The IV in this hypothesis is:

• Adding garlic to the aquarium

• The fish eating a lot

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NGSS.MS-LS2-4

If I feed Puff Puff McGuff mole crabs, then his teeth will wear down. The responding variable in this hypothesis is:

• Mole crabs as food

• Wearing down puffs teeth

Tags

NGSS.MS-LS2-1

Explaining the color of a chemical would be what kind of observation?

• Qualitative 
• Quanitative

What is a factor that the experimenter has full control over and changes to see what happens?

• Dependent Variable
• Independent Variable
• Control group 
• Hypothesis