Scientific Knowledge Answers

Consider the cycle of science shown in the diagram.

Which characteristic should describe all evidence collected by a scientist?

After scientists use a careful process to gather evidence and establish scientific facts, which step most likely occurs next in the scientific process?

explanationhypothesisobjectiveobservation

lifenatureEarthbeliefs

Which best explains how and why scientific knowledge is continually expanded and improved?

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.

Lichens are a type of parasitic organism that often grow on rocks and trees in areas with dirty, polluted air.

Which best describes why it is important for a scientist to use the metric system when recording data?

Which best describes scientific facts?

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.

objectiveobservableprovensubjective

Which is a characteristic of pseudoscience?

Meditation is a practice of sitting still and quiet for minutes or even hours. It has been practiced for thousands of years and is even a part of religious practices for some people. Carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that helps people connect with their current surroundings and activities.

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.

To help prevent people from getting the Ebola virus, countries around the world paid to help doctors develop a new vaccine. Now that the vaccine has been made, doctors will need to experiment on a large number of people to find out if it works safely.