Hypotheses, Theories, and Laws

Question 1

Explain why and how theories may be changed or replaced over time.

Revolt · Accepted Answer

Theories may change as new information and technologies lead to improved experimental methods and new evidence. If the evidence supports an existing theory, it may be updated. If reliable, relevant evidence does not support it, the theory may be replaced.

Question 2

Use the drop-down menus to complete the statements.

Revolt · Accepted Answer

law; Ais a factual statement about how something will behave.: law; Ais a well-tested explanation of a set of observations.: theory; Ais a possible explanation of a scientific question that is testable.: hypothesis

Question 3

For which of these questions could a testable hypothesis be developed? Check all that apply.

Revolt · Accepted Answer

Does the width of a rubber band affect how far it will stretch?; How does the thickness of a material affect insulation?; Do all objects fall to the ground at the same speed?

Question 4

Which statements describe a good hypothesis? Check all that apply.

Revolt · Accepted Answer

A good hypothesis can be tested.; A good hypothesis leads to a test with measureable results.; A good hypothesis provides a possible explanation to answer a scientific question.

Question 5

Identify the variables in this hypothesis.

Revolt · Accepted Answer

acceleration; The independent variable is.: mass; The dependent variable is.: acceleration

Question 6

What happens when an experiment with new information or new technology produces results that support an existing theory?

Revolt · Accepted Answer

The theory is revised or updated.

Hypotheses, Theories, and Laws Answers

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