Answers Crowley Credit Recovery Environmental Systems AScientific Inquiry

Hypotheses, Theories, and Laws Answers

0 verified answers

Free Preview

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

supported repeatedly as new discoveries have been made.

proven to be exactly true as originally proposed.

corroborated by data that were gathered during a single experiment.

developed from the postulates of many scientists.

Free Preview

How should you test a hypothesis?

by writing a mathematical equation

by making a single observation

by performing a controlled experiment

by answering a series of questions

The statement “force equals mass times acceleration (F=ma)” is Newton’s second law of motion. Why is this a law rather than a theory?

It states, rather than explains, the relationship between the variables.

It cannot be proven, whereas a theory can be proven.

It may be revised if new information shows that the relationship has changed.

It was classified as a law because it is related to other similar discoveries.

A testable hypothesis could be formed from which question?

Are bass more active in the daytime than at night?

When whales jump out of water, are they happy?

Are red tulips prettier than tulips of other colors?

Why are gerbils more popular as pets than hamsters are?

How does a law differ from a theory?

A law is a theory that has been proven to be true and universal.

A theory is a group of hypotheses that prove a law is true.

A law is a statement of fact, but a theory is an explanation.

A theory is a proposed law that has not yet been peer reviewed.

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?

If phosphorus affects tomato fruit production, then tomatoes that are fertilized with phosphorus will have larger leaves.

If phosphorus affects tomato fruit production, then phosphorus should be added to the soil during planting.

If phosphorus affects tomato fruit production, then adding phosphorus to the soil will make tomatoes taste better.

If phosphorus affects tomato fruit production, then plants that are fertilized with phosphorus will produce more tomatoes.

In which situation would new technology be most likely to cause a change in an existing theory about new structures a cell?

The new technology makes it possible to detect and analyze a structure more rapidly.

The new technology allows scientists to confirm the presence of an existing structure in a cell.

The new technology makes it possible to produce additional structures that were not previously there.

The new technology allows detection of a structure that could not be detected previously.

Which occurs directly before forming a hypothesis?

proposing a law

drawing a conclusion

developing a testable question

analyzing experimental data

Gregor Mendel demonstrated that traits are passed from parents to offspring independently of one another under all circumstances that he tested. All other genetics researchers have observed this as well. Based on this information, the statement can be made that “traits are passed from parents to offspring independently of one another.” Which describes the statement of fact?

a law

a hypothesis

a theory

an observation

What do hypotheses, theories, and laws have in common?

data

predictions

explanations

observations

Did you find these answers helpful?

Hypotheses, Theories, and Laws Answers

More from this Course

TRY EDGENUITY HACKS