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Hypotheses, Theories, and Laws Answers

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Which situation would result in a theory being replaced rather than revised?

A
Additional experiments are performed that confirm the existing theory.
B
New information is discovered that contradicts the existing theory.
C
Scientists disagree on how to revise a theory, so they replace it instead.
D
New experiments to confirm the theory yield inconclusive results.
5

A testable hypothesis could be formed from which question?

A
Are bass more active in the daytime than at night?
B
When whales jump out of water, are they happy?
C
Are red tulips prettier than tulips of other colors?
D
Why are gerbils more popular as pets than hamsters are?
6

Which occurs directly before forming a hypothesis?

A
proposing a law
B
drawing a conclusion
C
developing a testable question
D
analyzing experimental data
7

Conlan wants to answer the question, “Does phosphorus affect tomato fruit production?” Which statement represents a hypothesis that he can test to answer his question?

A
If phosphorus affects tomato fruit production, then tomatoes that are fertilized with phosphorus will have larger leaves.
B
If phosphorus affects tomato fruit production, then phosphorus should be added to the soil during planting.
C
If phosphorus affects tomato fruit production, then adding phosphorus to the soil will make tomatoes taste better.
D
If phosphorus affects tomato fruit production, then plants that are fertilized with phosphorus will produce more tomatoes.
8

Which is the correct order in the scientific process?

A
ask a question ® form a hypothesis ® make an observation
B
ask a question ® make an observation ® form a hypothesis
C
make an observation ® form a hypothesis ® ask a question
D
make an observation ® ask a question ® form a hypothesis
9

Our current understanding of evolution is called a theory because it has been

A
supported repeatedly as new discoveries have been made.
B
proven to be exactly true as originally proposed.
C
corroborated by data that were gathered during a single experiment.
D
developed from the postulates of many scientists.
10

How does a law differ from a theory?

A
A law is a theory that has been proven to be true and universal.
B
A theory is a group of hypotheses that prove a law is true.
C
A law is a statement of fact, but a theory is an explanation.
D
A theory is a proposed law that has not yet been peer reviewed.

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