Theories and Hypotheses in Science

The video tutorial explores the difference between theories and hypotheses. It explains that hypotheses are testable ideas based on observations, while theories are well-substantiated explanations of phenomena. The video provides examples such as dark matter and string theory, highlighting that some are still hypotheses due to insufficient evidence. It emphasizes that theories can be modified or rejected with new evidence, showcasing the dynamic nature of science.

What is the main difference between a theory and a hypothesis?

• A theory is a guess, while a hypothesis is a proven fact.

• A hypothesis is a law, while a theory is a guess.

• A hypothesis is a testable idea, while a theory is a well-substantiated explanation.

• A theory is always correct, while a hypothesis is always incorrect.

What is a characteristic of a hypothesis?

• It is always true.

• It cannot be tested.

• It is a law of nature.

• It is based on observations and can be tested.

How are theories related to hypotheses?

• Theories and hypotheses are the same.

• Hypotheses are more precise than theories.

• Theories are built upon hypotheses that support them.

• Theories are guesses, while hypotheses are facts.

What is a common feature of both theories and hypotheses?

• Both are guesses without evidence.

• Both are unchangeable.

• Both are based on observations.

• Both are laws of nature.

Which of the following is an example of a theory?

• String hypothesis

• Theory of relativity

• Dark energy

• Dark matter

Why are scientific theories considered modifiable?

• They are based on laws that never change.

• They are not based on any evidence.

• They can be modified if new evidence is found.

• They are guesses and can be changed anytime.

What is the significance of the theory of relativity?

• It is a law that cannot be changed.

• It is a hypothesis about dark matter.

• It explains motion and is a well-substantiated theory.

• It explains the origin of life.

What is the current status of dark matter in scientific terms?

• It is a proven theory.

• It is a hypothesis due to lack of evidence.

• It is a confirmed fact.

• It is a law of physics.

Which of the following is still considered a hypothesis due to insufficient evidence?

• Dark energy

• Theory of evolution

• Law of gravity

• Theory of relativity

What makes string theory challenging to classify as a theory?

• It is not based on any mathematical equations.

• It contradicts the theory of relativity.

• The math checks out, but there is not enough evidence.

• It is already a proven fact.