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A hypothesis is a tentative statement that proposes a possible explanation to some phenomenon or event.
A useful hypothesis is a testable statement which may include a prediction.
When Are Hypotheses Used? The key word is testable. That is, you will perform a test of how two variables might be related.
This is when you are doing a real experiment. You are testing variables. Usually, a hypothesis is based on some previous observation such as noticing that in November many trees undergo colour changes in their leaves and the average daily temperatures are dropping.
Are these two events connected? Any laboratory procedure you follow without a hypothesis is really not an experiment.
It is just an exercise or demonstration of what is already known. How Are Hypotheses Written? Salt in soil may affect plant growth. Plant growth may be affected by the color of the light.
Bacterial growth may be affected by temperature. Ultra violet light may cause skin cancer. Temperature may cause leaves to change color. However, their form is not particularly useful. Using the word may does not suggest how you would go about proving it.
If these statements had not been written carefully, they may not have even been hypotheses at all. One way to prevent making such easy mistakes is to formalize the form of the hypothesis.
If the incidence of skin cancer is related to exposure levels of ultraviolet lightthen people with a high exposure to uv light will have a higher frequency of skin cancer. If leaf color change is related to temperaturethen exposing plants to low temperatures will result in changes in leaf color.
Notice that these statements contain the wordsif and then. They are necessary in a formalized hypothesis. But not all if-then statements are hypotheses. In a formalized hypothesis, a tentative relationship is stated. For example, if the frequency of winning is related to frequency of buying lottery tickets.
If you always ask yourself that if one thing is related to another, then you should be able to test it. Formalized hypotheses contain two variables. In the statements above the dependent variable is underlined and the independent variable is underlined and italicized. The ultimate value of a formalized hypothesis is it forces us to think about what results we should look for in an experiment.
How does the type of liquid water, milk, or orange juice given to a plant affect how tall the plant will grow?A lab report is a written report describing your scientific method. LAB WRITEUP FORMAT – AP CHEMISTRY – KLAMM – / As one of the world's leading specialty chemical companies, Clariant contributes to value creation with innovative and sustainable solutions for customers from.
Examples of AP Lab Reports Lab 1 Osmosis & Diffusion Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Lab 2 Enzyme Catalysis Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Lab 3 Mitosis & Meiosis Sample 1 Sample 2 Sample 3 Sample 4 Lab 4 Continue reading "Examples of AP Lab Reports" Skip to content.
Menu. Home. AP Physics labs differ widely from those performed in Regents Physics. A good lab report does more than present data; it demonstrates the writer's comprehension of the concepts behind the data. Formal Lab Report Format Measurement interdisciplinary research and development oecd has emphasized the importance of assessment for the st century integration of the world and the united states exceeded demand and the.
Report abuse. Transcript of Yeast Fermentation Lab Report.
Chris Alleman, Rachel Poulsen, Spencer Koelsch, Jade Jones Class Period 6 Pre AP Biology Water Temperature and Its Effect on the Fermentation of Yeast Conclusion (Rachel) In this experiment, we tried to answer the question of whether the temperature of water affects the production of.
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