Scientific Method

The video tutorial explains the nature of scientific laws, highlighting their descriptive nature as opposed to prescriptive judicial laws. It uses Archimedes' principle to illustrate how scientific laws describe natural phenomena. The tutorial emphasizes that scientific laws must be experimentally valid across various phenomena and can be expressed as equations, like Newton's second law. It also discusses the importance of questioning scientific laws, as new discoveries may alter or invalidate them.

What is the primary difference between scientific laws and judicial laws?

• Judicial laws are always true, while scientific laws can change.

• Judicial laws are based on experiments, while scientific laws are based on opinions.

• Scientific laws describe how nature behaves, while judicial laws prescribe how people should behave.

• Scientific laws are prescriptive, while judicial laws are descriptive.

According to Archimedes' principle, what happens to an object immersed in a fluid?

• It sinks to the bottom.

• It is pushed upward by a force equal to the weight of the fluid displaced.

• It remains stationary.

• It dissolves in the fluid.

Why do metal ships float on water?

• Because they are coated with a special waterproof material.

• Because they are powered by engines.

• Because their density is less than the density of water due to empty spaces.

• Because they are made of lightweight materials.

Which of the following is an example of a scientific law expressed as an equation?

• Newton's second law of motion

• The law of conservation of energy

• The law of gravity

• Archimedes' principle

What might cause a scientific law to be revised or dismissed?

• A decision by a court of law

• New experimental evidence or discoveries

• A change in public opinion

• A vote by the scientific community