Hypotheses, Theories, and Laws

Question 1

Identify the variables in this hypothesis.

Revolt · Accepted Answer

The independent variable is .: cigarette use; The dependent variable is .: lung function

Question 2

lung tissuecigarette use✔ lung function

Revolt · Accepted Answer

✔ lung function

Question 3

Use the drop-down menus to complete the statements.

Revolt · Accepted Answer

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

Question 4

hypothesis✔ lawtheory

Revolt · Accepted Answer

✔ law

Question 5

✔ hypothesislawtheory

Revolt · Accepted Answer

✔ hypothesis

Question 6

For which of these questions could a testable hypothesis be developed? Check all that apply.Do children’s heart rates increase at the same speed when walking uphill?Is experimenting with moldy bread more fun than experimenting with yogurt cultures?Does temperature affect how long blood can be stored?How does moisture affect the growth of moss on a tree?Which of Leeuwenhoek’s microscopes was the coolest?

Revolt · Accepted Answer

Do children’s heart rates increase at the same speed when walking uphill?; Does temperature affect how long blood can be stored?; How does moisture affect the growth of moss on a tree?

Question 7

Which statements describe a good hypothesis? Check all that apply.A good hypothesis does not always have to be based on prior knowledge or research.A good hypothesis is valuable even if it turns out to be incorrect.A good hypothesis provides a possible explanation to answer a scientific question.A good hypothesis is based on one’s personal opinion.A good hypothesis can be tested.A good hypothesis leads to a test with measureable results.

Revolt · Accepted Answer

A good hypothesis is valuable even if it turns out to be incorrect.; A good hypothesis provides a possible explanation to answer a scientific question.; A good hypothesis can be tested.; A good hypothesis leads to a test with measureable results.

Question 8

Identify the variables in this hypothesis.

Revolt · Accepted Answer

✔ cigarette use; The independent variable is .: cigarette use; The dependent variable is .: lung function

Question 9

What happens when several experiments with new information or new technology produce results that challenge an existing theory?

Revolt · Accepted Answer

The theory is revised or updated.

Hypotheses, Theories, and Laws Answers

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