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14 Cards in this Set
- Front
- Back
What does a scientist do? |
1 - Observes the world in order to learn 2 - Records 3 - Discusses their thoughts and observations. |
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Name two types of observations. |
1 - Qualitative 2 - Quantitative |
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What is a quantitative observation? Give an example. |
Quantitative is an observation that involves numbers or quantities. For example, measuring the height of a bouncing ball. |
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What is a qualitative observation? Give an example. |
Qualitative observations involve characteristics or traits of an object. For example, measuring the color of a two liquids mixed together. |
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What is an inference? |
An inference is an explanation based on observations. Other definitions: - An interpretive statement - A logical guess based on observations. |
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What are the steps of the scientific process? |
1. Problem 2. Hypothesis 3. Procedure 4. Observations/Data 5. Error 6. Conclusion |
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What are the two types of variables in an experiment? |
1 - Independent variable (Cause) 2 - Dependent variable (Effect) |
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What is the independent variable? Give an example. |
The Independent Variable (Cause) is the manipulatedvariable. In an experiment, we changethis factor on purpose. An example would be to keep changing the height of from which you drop a ball. |
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What is the dependent variable? Give an example. |
The Dependent Variable (Effect) is the responding variable. It changes becauseof the independent variable. An example would be to how high the ball bounces as a result of each ball drop. |
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What makes a good scientific question? |
A scientific question must be testable. Questions should: 1 - Be about things in the natural world 2- It must be able to be answered through investigation by collecting and analyzing evidence. 3 - Not be about personal beliefs, moralvalues, or the supernatural |
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What is the format of a good scientific question? |
A good scientific question should take the format: How does the [independent variable] affect the [dependent variable]? For example: How does the height that a ball is dropped out affect how high it bounces? |
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What are the two parts of a well written hypothesis? |
Part 1 - IF . . .this part describes the purpose and what is going on in the experiment. Part 2 - THEN . .. this part is your prediction of what will happen. Example - IF an ice cubeis placed in hot and cold water, THEN the ice cube in the hot water will melt faster. |
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What is error in an experiment? |
Errors are possible mistakes in an experiment.
Note: to say there is noerror in an experiment is ALWAYS an error!Error should beexplained after observations/data. |
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What should be in an experiment's Conclusion? |
1. What was the experiment’s purpose? 2. Was the hypothesiscorrect? EXPLAIN. 3. What did the observations show? Give specific examples from data. 4. How can you explain the results/ inferences? 5. Is further investigation neededor any new questions to explore? Conclusions should always reflect your hypothesis, and should begin with an “AS…. THEN…” statement that tells what happened in the experiment. |