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10 Cards in this Set
- Front
- Back
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Understand the steps of the scientific method |
The scientific method begins with observation that leads to a question about the observed phenomenon. Based on observations scientists generate a hypothesis. A good hypothesis offers only one explanation and leads to predictions. The predictions are tested using carefully designed experiments. If possible, experiments should only test one factor at a time, with all other conditions being kept constant. Data collected from the experiments are analyzed and evaluated in respect to the original hypothesis statement, and conclusions are drawn. |
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What is an observation? |
leads to a question about the observed phenomenon |
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What is a hypothesis? Come up with your own hypothesis |
Tentative explanation for the observed phenomenon. |
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What is a prediction?
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Often written as an “if-then” statement
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How many variables should an experiment test?
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One
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Understand how to graph the weight of a penny versus the year? What is on the y-axis?
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Y-axis: Weight
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Understand how to graph the weight of a penny versus the Year? what is on the x-axis?
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X-axis: Year
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How much does a penny weigh that was made before 1982?
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3.11 grams |
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How much does a penny weigh that was made after 1982?
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2.5 grams |
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Why do we zero out a scale?
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To assure that the measurement is accurate
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