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18 Cards in this Set
- Front
- Back
- 3rd side (hint)
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List the 6 steps of scientific method in order. |
1. Problem 2. Hypothesis 3. Test 4. Analyze 5. Conclude 6. Repeat |
PHTACR |
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What is a fact? |
Something know to be true |
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What is a theory |
When a hypothesis is tested and confirmed by scientists. |
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Define and give another name for Independent variable. |
Manipulated variable. The variable that is changed on purpose by the experimenter. |
MIX |
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Define and give another name for Dependent variable. |
Responding variable. The variable the responds or the effects of the experiment. |
DRY |
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What is a control? |
The control group is the standard that everything else is compared to. |
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What are constants? |
Constants are factors that are NOT allowed to change in an experiment. |
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How many variables can be tested in a controlled experiment? |
One |
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What is the difference between spontaneous generation, abiogenesis, and biogenesis? |
Spontaneous generation and abiogenesis mean life could arise from non-living matter. Biogenesis means all living things come from other living things. |
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What did Redi test and when? Name the IV, DV, constants, and control. |
1668- Redi tested where maggots came from IV: covering on container DV: maggots apereance Constants: jars, meat, location, temp., time Control: jar left open |
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What did Spalanzani test and when? Name the IV, DV, constants, and control. |
1767- if microbes form in air then boiling will kill them. (Boiled broth) IV: Covering on jars DV: amount of microbes in jars Constants: jar, broth, boiling temp, time boiled, location Control: jar left open |
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What did Pasteur test and when? Name the IV, DV, constants, and control. |
1864- Microbes come from dust and cells of other organisms not the air. IV: neck shape DV: microbes found in broth Constants: broth, boiling temp, boiled time Control: flask without curves neck. |
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What are the IV, DV, Constants, and control in the miracle grow experiment? |
IV: amount of fertilizer in each plant DV: height of plant Constants: pot, seed, dirt, location, water, light Control: plant with no fertilizer |
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What are the IV, DV, Constants, and control in the water flea experiment? |
IV: amount of caffeine given DV: heartbeat of flea Constants: water, mineral content, am out of bacteria for food, amount of light, temperature Control: Fleas without caffeine given |
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What is a hypothesis? When is it useful. How is it written. What does it contain? |
A proposed answer to a question. Useful only if its testable. written using an IF THEN statement. Contains dependent and independent variables. |
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Who did the meat maggot experiment and when? |
Redi- 1668 |
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Who did the boil broth experiment and when? |
Spalanzani - 1767 |
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Who did the S shaped flask experiment and when? |
Pasteur - 1864 |
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