Front

Why was the original theory that disease was caused by fate or incorrect behavior modified?

Back

New evidence prompted revision to the original ideas.

Front

How does Newton’s third law of motion differ from a theory?

Back

A theory explains a set of well tested observations; a law describes a pattern in nature.

Front

In which statement does the word theory mean scientific theory? Options: In theory, the experiment will work as planned. , She has a theory about why the storm arrived later than predicted. , The atomic theory explains that material objects are made up of atoms. , The doctor’s prescription for curing a cold is based on his best theory or guess. 

Back

The atomic theory explains that material objects are made up of atoms. 

Front

Which of the following is NOT evidence that can be used to support the theory of plate tectonics?

• The sea floor is spreading apart from mid-ocean rifts.
• Mountains push up where two plates bump into each other.
• The same species of bird is found in North America and South America.
• The continents look as if they fit together like pieces of a jigsaw puzzle.

Back

The same species of bird is found in North America and South America.

Front

Why is it important that scientists modify scientific theories when important new information is discovered?

Back

to keep the theory as accurate and effective as possible

Front

Why does Mai say Joe's theory about sea turtles is not scientific?

Back

Joe’s idea is not supported by scientific evidence.

Front

Best method for investigating effects of growth hormone on butterfly metamorphosis: models, controlled experiments, systematic observations, random sampling of populations

Back

controlled experiments

Front

How is Eduardo using scientific methods in developing a plan?

Back

He is analyzing data about causes and effects.

Front

Why do scientists debate while searching for explanations?

Back

because debating helps scientists focus on empirical evidence, analyzing both the strengths and weaknesses of the evidence

Front

What is an example of empirical evidence supporting the hypothesis that unprotected sun exposure contributes to skin cancer?

Back

data demonstrating a relationship between amount of sun exposure and incidences of skin cancer