Which best describes scientific facts?
Which characteristic should describe all evidence collected by a scientist?
Which best describes why it is important for a scientist to use the metric system when recording data?
lifenatureEarthbeliefs
Which statements describe characteristics of pseudoscience? Select three options.Pseudoscience is often based only on opinions.Pseudoscience is based on objective observations.Pseudoscience requires systematic experiments.Pseudoscience often involves explanations of beliefs.Pseudoscience includes subjective ideas.Pseudoscience is cyclical and changes based on new data.
In March 2015, the American space program sent astronaut Scott Kelly to live on a space station for a whole year, where he will not feel gravity as the space station orbits Earth. Scott Kelly’s twin brother, Mark, stayed at home. Scientists then plan to study the twins’ body chemistry, genetics, sight, and other data. This way, scientists can find out how living with and without gravity affects two identical people.
Consider the cycle of science shown in the diagram.

objectiveobservableprovensubjective
Which is a characteristic of pseudoscience?
Alchemy is the process of trying to turn non-gold metals into gold. It was practiced hundreds of years ago by scientists who believed that with the right amounts of heat or chemical reactions, they could make gold. After years of experiments and observations, gold was never produced.
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