For example, it is a common observation that objects that are thrown into the air fall toward the earth. It allows for predictions that will occur in new circumstances.
Sir Isaac Newton (1643-1727) put forth a hypothesis to explain this observation, which might be stated as 'objects with mass attract each other through a gravitational field.'" Newton's hypothesis demonstrates the techniques for writing a good hypothesis: It is testable. It builds upon previously accumulated knowledge (e.g., Newton's work explained the observed orbits of the planets).
Keep in mind that writing the hypothesis is an early step in the process of doing a science project.
The steps below form the basic outline of the Scientific Method: To help demonstrate the above principles and techniques for developing and writing solid, specific, and testable hypotheses, Sandra and Kristin, two of our staff scientists, offer the following good and bad examples.
When you write your hypothesis, it should be based on your "educated guess" not on known data.
Similarly, the hypothesis should be written you begin your experimental procedures—not after the fact.Hypothesis: (noun) a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation. That sounds pretty serious (and a little intimidating too). In simpler terms, a hypothesis is an idea of what you think will happen in your experiment or study.You’ll make this prediction after you’ve completed some research but before you’ve conducted your study or experiment. Learning how to write a hypothesis for your badass research paper isn’t that bad, either. Before you start writing, you’ll need to choose a topic. Following the scientific method, we come up with a question that we want to answer, we do some initial research, and then before we set out to answer the question by performing an experiment and observing what happens, we first clearly identify what we "think" will happen. This formulaic approach to making a statement about what you "think" will happen is the basis of most science fair projects and much scientific exploration.Example: If leaf color change is related to temperature, then exposing plants to low temperatures will result in changes in leaf color.Example: If the rate of photosynthesis is related to wave lengths of light, then exposing a plant to different colors of light will produce different amounts of oxygen. One is "independent" and the other is "dependent." The independent variable is the one you, the scientist control and the dependent variable is the one that you observe and/or measure the results.Hypothesis: Chocolate may cause pimples All of these are examples of hypotheses because they use the tentative word "may." However, their form in not particularly useful.Using the word does not suggest how you would go about proving it.If these statements had not been written carefully, they may not have been a hypotheses at all.A better way to write a hypotheses is to use a formalized hypotheses Example: If skin cancer is related to ultraviolet light, then people with a high exposure to uv light will have a higher frequency of skin cancer.