Development of Scientific Knowledge

The gene-chromosome theory was proposed in 1930. The theory was based on experimental results using fruit flies. Which statement best describes the term theory as used in the gene-chromosome theory?

• A theory refers to a scientific explanation that is strongly supported by a variety of experimental data.

• . A theory refers to an assumption made by scientists and implies a lack of certainty

• A theory is a law that is never revised as new scientific evidence is presented.

• A theory is a hypothesis that has been supported by one experiment performed by two or more scientists

What is an important part of being a scientist?

• seeking evidence to argue for or against knowledge that provides the best possible explanation of phenomena in the natural world

• seeking to be a part of a team of scientists that the world acknowledges as the best scientists

• seeking evidence that only argues against a current scientific theory

• seeking answers to only simple questions about the natural world

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"A theory can be proved by experiment; but no path leads from experiment to the birth of a theory."

What did Albert Einstein most likely mean by this quote?

• A theory proves only one specific path of scientific knowledge, but other scientists break it up into broad paths of knowledge.

• Universally accepted scientific knowledge is easy to come by because it only requires one experiment

• Universally accepted scientific knowledge does not come easily because it surrounded by a large body of discussion and debate.

• A theory is only born when it is known that it will be impossible for the theory to ever be disproved.

Which of the following is correct about debates in science?

• . Scientists do not always make the same observations and inferences about an experiment, so debates are an important part of determining the best explanation of an aspect of the natural world.

• Scientists always make the same observations and inferences about an experiment, so debate is not a vital part of gaining knowledge about the natural world, as it only wastes time and slows down studies.

• Scientists who have the most data collected from replicating other scientists' experiments will always win debates about a piece of scientific knowledge

• Scientist who have the most data collected from repeating their own experiment will always win a debates about a piece of scientific knowledge.

Empirical Evidence = ?

• evidence generated by general conversations with an expert in a field of science

• false evidence that some scientists use when they purposely add bias to data they have collected

• valid data generated from direct observation or experimentation as part of a scientific process

• .information collected from textbooks that validates scientific research

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What must always be present in order to form a true scientific explanation?

• controlled variables

• subjective evidence

• empirical evidence

• dependent variables

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What is empirical evidence?

• information obtained from a written scientific document

• observations of a natural phenomenon

• a description or short narrative about a natural phenomenon

• one persons insight about an experiment that is being conducted

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After providing research to back the theory, a scientific theory becomes a scientific law.

• true

• false

A scientific theory cannot be modified.

• true

• false

The evidence and data supporting the movement of the Earth's outer layers over time (Plate Tectonics) is an example of a scientific

• theory

• law

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