3: Theories and Laws

Why did the narrator feel the need to rescue earthworms from puddles?

• Because they were dangerous

• Because they were cool

• Because they were harmful

• Because they were annoying

What is a hypothesis?

• A suggested explanation that can be tested

• A scientific law

• A proven fact

• A random guess

How is the word 'theory' often used in everyday life?

• As a mathematical formula

• As a proven fact

• As a scientific law

• As an opinion or guess

What distinguishes a scientific theory from a casual theory?

• Scientific theories are opinions

• Scientific theories are supported by evidence and repeated testing

• Scientific theories are laws

• Scientific theories are guesses

Can scientific theories become scientific laws?

• Yes, they can

• No, they are different things

• Yes, if they are proven

• No, they are the same

What do scientific laws tend to describe?

• Why phenomena happen

• Hypotheses

• Opinions

• Natural phenomena

What is an example of a scientific law?

• Cell theory

• Theory of general relativity

• Atomic theory

• Newton’s second law of motion

What do Mendel’s laws describe?

• Theories about genetics

• Phenomena in pea plant experiments

• Mathematical formulas

• Hypotheses about DNA

Why is it difficult to explain Mendel’s laws?

• Because DNA was not understood in his time

• Because they are opinions

• Because they are guesses

• Because they are not scientific

What is the main difference between scientific theories and laws?

• Laws are opinions, theories are facts

• Theories describe phenomena, laws explain why

• Laws describe phenomena, theories explain why

• Theories are more powerful than laws