Scientific Theories

Scientific Theory & Evidence

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What is scientific Theory and Evidence?

• A scientific theory is a proposed description, explanation, or model of something occurring in nature.

• These theories have to be testable so that scientists can use the scientific method to see if they work.

Notes

• Scientific theories are ideas or explanations about what the world is like or how things work.

• The scientific method involves doing experiments and gathering evidence to test scientific theories.

• A scientific theory can be accepted as a scientific law if scientists test it over time and always find evidence that supports the theory.

• Scientific method is the steps we take in doing an experiment: observations, hypotheses, designing experiments, gathering data, and drawing conclusions.

Multiple Choice

What is a scientific theory?

• a test to prove or disprove an idea

• an idea that is definitely false

• an idea about the world or how it works

• proof that the world is a certain way

Multiple Choice

What is the name of the process of gathering evidence called?

• the Experimental Process

• the Scientific Proof

• the Scientific Experiment

• the Scientific Method

Multiple Choice

Which is an example of a theory that was proved to be true?

• Newton’s Law of Force

• Newton’s Law of Gravitation

• The Law of Try, Try Again

• Newton’s Law of Friction

Multiple Choice

Which of the following choices is NOT part of the Scientific Method?

• forming a theory

• carefully running experiments

• gathering evidence

• simply accepting an idea is true

Multiple Choice

What should be true about scientists when they are testing a scientific theory?

• They should be open to new ideas.

• They should be certain their theory is correct.

• They should be unobservant in their experiments.

• They should be incorrect about their theory.

Multiple Choice

Which of these is a scientific theory that was eventually disproved?

• The Earth is round.

• The Sun revolves around the Earth.

• Germs cause disease.

• Lightning often strikes the same place twice

Multiple Choice

What happened after scientists revised their theory that disease was caused by smell?

• They discovered their first theory was correct.

• They created a scientific law about germs and diseases.

• They were able to make diseases smell less.

• They were able to create medicine to fight disease.