Hypothesis, theory, or fact?

Which statement does NOT describe a scientific theory?

• A scientific theory can never be proven

• A scientific theory is supported by facts

• A scientific theory eventually becomes a fact

• A scientific theory is a generally accepted explanation

In 1859, Charles Darwin described a model of how living things change over time. He described this model and the evidence that supported it in a book called On The Origin of Species. Which scientific term is used to describe a testable model that seeks to explain natural phenomena?

• data

• hypothesis

• theory

• observation

Scientists form _________ hypothesis to answer questions.

• accurate

• short

• mathematical

• testable

Scientists ___________ experiments to make sure the results are meaningful.

• perform

• repeat

• conclude

• communicate

Tags

NGSS.HS-PS3-4

Before a scientific theory is accepted and supported, it has

• been tested by only one scientist.

• been published in scientific journals.

• been tested many times by different scientists.

• been approved by the International Committee of Scientists.

The scientific spirit is based upon

• honesty and trust.

• hypotheses of well-known philosophers.

• consensus in the scientific community.

• experimentation.

Tags

NGSS.HS-PS1-2

In a controlled experiment, how many independent variables can be worked with at a time? 

• one
• none
• two or more
• how ever many makes sense.

 A testable idea or explanation that leads to scientific investigation based on prior knowledge is known as: 

• theory
• experiment 
• observation
• hypothesis

Tags

NGSS.HS-PS1-2

Evolution is one example of a theory. From what you know about the scientific method, what can you conclude about this biological theory?

• a. It's been tested many times. 
• b. Scientists don't need to test it anymore
• c. No one is allowed to test whether it's true or not. 
• d. There is very little evidence to support it. 

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

While speaking to a colleague, a scientist makes the following statement: "I propose that Bald Eagle eggs in northern Maine will have thinner shells than those from birds in southern Alaska due to increased levels of pesticides in the water." This statement is a

• theory
• law
• conclusion
• hypothesis

Tags

NGSS.HS-LS2-7