For a hypothesis to be valid, it must be able to be tested.
Cacti experience more successful growth rates than tulips on Mars. (Until we're able to test plant growth in Mars' ground for an extended period of time, the evidence for this claim will be limited and the hypothesis will only remain logical.)
Know the steps of the scientific method 2.
4. If the results do not support your hypothesis, then explain why not; consider (1) problems with your understanding of the lab's scientific concept; (2) problems with your reasoning, and/or (3) problems with the laboratory procedure itself (if there are problems of reliability with the lab data or if you made any changes in the lab procedure, discuss these in detail, showing specifically how they could have affected the results and how the errors could have been eliminated).
Explain the need for a control group whenever experiments are performed
3. Explain the use of the word theory in the scientific process
If evidence supports a hypothesis, it is upgraded to a theory.
One answer to this question assumes that observation is a perceptualprocess so that to observe is to look at, listen to, touch, taste, orsmell something, attending to details of the resulting perceptualexperience. Observers may have the good fortune to obtain usefulperceptual evidence simply by noticing what’s going on around them,but in many cases they must arrange and manipulate things to produceinformative perceptible results. In either case, observation sentencesdescribe perceptions or things perceived.
Hypotheses cannot become theories and theories cannot become laws.
2. If the results fully support your hypothesis but your reasoning was not completely sound, then explain why the initial reasoning was not correct and provide the better reasoning.
Theories apply to a broader range of phenomena than do hypotheses.
We next perform some experiments to attempt to validate each of these hypotheses. Experiment (1): We take a hot glass plate and drop it into cold gasoline; the glass shatters. Experiment (2): We slowly pour cold water over a hot glass plate; the glass shatters. Experiment (3): We drop a room-temperature glass plate into cold water; the glass does not break. Experiment (4): We place a hot plate in a cold freezer; the glass shatters.
The strength of a scientific theory is related to the ..
For example, a particular hypothesis about meteorological interactions or nuclear reactions might be so complex that it is best described in the form of a computer program or a long mathematical equation.
This provides evidence either for or against the hypothesis.
Experiment (1) makes hypotheses (A) and (C) unlikely. Experiment (3) confirms that hypothesis (A) is not correct. Experiment (2) makes hypothesis (B) untrue. Experiment (4) indicates that (C) is even less likely, and confirms hypothesis (D). Now, after a set of carefully designed experiments have been completed, hypothesis (D) can be considered to be a theory instead of a hypothesis. The difference between a theory and a hypothesis is the observation of experiments which confirm the hypothesis, while eliminating alternative explanations. Typically scientific experiments are designed and controlled to progressively narrow the number of alternative explanations by attempting to change one related variable at a time.