Brian's aunt has cats. When Brian recently visited her, he started sneezing badly and believes that it was because he is allergic to cats.What would be the next step for Brian to form a hypothesis?
Jorge is testing the effect of lead on child development. Based on his observations, he finds that the longer the children are exposed to lead-based paint, the higher the chance becomes that the children may develop behavioral problems. He has done repeated experiments, and his results are similar to the results of many other scientists.Why is this scenario considered a theory rather than a hypothesis?
For many years, experiments showed that light had wave-like properties. For this reason, scientists described light as a wave. More recently, experiments produced data that could not be explained by the wave theory of light. The idea of particle properties was introduced.Why did the theory of light change over time?
Scientists initially believed that the smallest particle of matter was the atom. Then, particles smaller than the atom were discovered.What most likely contributed to the change in this theory?
Which option supports a theory and allows it to remain the same?
When Jeremy returned home after vacation, he noticed that his new plant had not grown. His mother, a florist, told him that it was because the plant was not getting enough sunlight. He moved his plant closer to the window to get more sunlight.How can Jeremy best support the idea that his plant needs more sunlight?
How is a theory different from a law?
As new technology is developed, theories are studied in new ways. Which best describes what happens to the theory?
Charles Darwin used fossils as evidence to develop his theory of natural selection. Which event would most likely lead to a change in this theory?
Which statement identifies a characteristic of a scientific theory?
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