HELP PLEASEEEEEEE!!!!!!!!!!!!!!!!!!…

[valentino]

Question 1 (Multiple Choice Worth 2 points)

[BWS.03] A scientific theory states that the universe is expanding. Which of these statements is correct about this theory?

It is a fact which cannot change over time.

It is strengthened by data which is always contradictory.

It will become a law if it is supported by scientific evidence.

It is a well supported explanation which cannot become a law.



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Question 2 (Multiple Choice Worth 2 points)

[BWS.03] "The sun rises in the east and sets in the west." Which of these statements is correct about this law of science?

It is a theory which is unreliable.

It is a statement based on experimentation.

It is a fact in nature which can be contradicted.

It is an observation which cannot be challenged.

Question 5 (Multiple Choice Worth 2 points)

[BWS.03] One group of students is investigating the properties of charged objects. Their observations are listed below.


When two positively charged objects are brought close to each other, they push each other away.
When two negatively charged objects are brought close to each other, they push each other away.
When a positively charged object is brought close to a negatively charged object, they pull toward each other.
The experiment was repeated by several students using different charged objects. The results were the same. Based on the investigations, which of these theories would the students most likely propose?
similar charges attract

similar charges repel

positive charges attract all charges

negative charges attract all charges

Question 8 (Multiple Choice Worth 2 points)

[BWS.02] Scientists believe that Earth is becoming warmer. This idea will become unacceptable over time if

it is not discussed in a scientific forum

scientific evidence supports a new idea

scientists propose alternative hypothesis

new instruments are invented to measure temperature



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Question 9 (Multiple Choice Worth 2 points)

[BWS.02] Scientists in different parts of the world repeat an experiment several times and get the same result. Which of these is the most likely reason why experiments are repeated to produce the same result?

to make results non-testable

to make results non-observable

to make conclusions elaborate

to make conclusions reliable



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Question 10 (Multiple Choice Worth 2 points)

[BWS.06] In ancient times, scientists believed that matter could be destroyed by burning or breaking. Modern scientists believe that matter cannot be destroyed. What best accounts for these different opinions?

scientists with varied backgrounds make different interpretations

scientists come up with different hypotheses without enough evidence

scientists believe in discarding all interpretations which were made in the past

scientists propose different hypotheses to include all the scientific possibilities



SI beg w/ science.