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37 Cards in this Set

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What is the purpose of the scientific method?
To aquire new knowledge in an organized way.
Step 1 of the scientific method
Determine question
Step 2 of the scientific method
make hypothesis
Step 3 of the scientific method
Form an experiment
Step 4 of the scientific method
Analyze results
Step 5 of scientific method
conclusions
Step 6 of scientific method
collect and publish results
Explain what it means when we say the scientific method is a cycle?
The scientific method never stops, it is continuously going. When scientist want to study cancer they have to continuously repeat the cycle
What is a hypothesis?
a possible explanation to a scientific question
What is a theory?
A scientific idea supported by data but cannot be tested. It tells you why something happens and can change when new information is found.
What is a law?
A scientific idea that has been tested many times and has never been proven wrong. It tells you what will happen.
What is a controlled experiment?
When all conditions are normal
Why must you have a controlled experiment?
To use as comparison
What is a hypothesis?
a possible explanation to a scientific question
What is a theory?
A scientific idea supported by data but cannot be tested. It tells you why something happens and can change when new information is found.
What is a law?
A scientific idea that has been tested many times and has never been proven wrong. It tells you what will happen.
What is a controlled experiment?
When all conditions are normal
Why must you have a controlled experiment?
To use as comparison
What is a hypothesis?
a possible explanation to a scientific question
What is a theory?
A scientific idea supported by data but cannot be tested. It tells you why something happens and can change when new information is found.
What is a law?
A scientific idea that has been tested many times and has never been proven wrong. It tells you what will happen.
What is a controlled experiment?
When all conditions are normal
Why must you have a controlled experiment?
To use as comparison
What is an independent variable?
What is purposely being changed. The cause
What is a dependent variable?
What is changing because of the independent variable. The effect
What is a quantative observation?
numbers,measurement of amounts
What is a qualitative observation?
descriptions, characteristics
What is an observation?
No opinion, when you use your 5 sences to gather acurate and detailed information.
What is an inference?
when you draw conclusions based on observations and prior knowledge
What are two characteristics that make the metric system so easy to work with?
Based on power of 10, prefixes show size.
Label for volume?
mL
Label for density?
g/mL or g/cm^3
Formula for density?
mass/volume
Why do you use the smallest graduated cylinder possible?
Most accurate results
How do you find the volume of an irregular solid?
place in graduated cylinder and measure displacement of water
In order what are the metric system prefixes?
Kilo, Hecto, Deka, Base, Deci, Centi, Milli
Importance of sampling?
to study a large population by recording data from a small part and make predictions about entire population, larger the sample size the more accurate