Bell Ringer 1/10-1/13

Which is true about what models allow us to do to the system being studied?

• A) Models are more accurate.

• B) Models are more waste of natural resources.

• C) Models require more scientists to study a system.

• D) Models allow many systems to be studied more than before there were models.

Answer explanation

D.)Models allow many systems to be studied more than before there were models, is the correct statement. This is true because models allow us to increase or decrease the size of models that were previously hard to study do to lack or or the enormity of their size. The other statements are untrue.

Which statement is a good description of a model?

• A) A model is a description of nature based only on several observations.

• B) A model is a description of nature that is more reliable than the real system.

• C) A model is a complex computer simulation that can only be created and used by a genius.

• D) A model is a testable idea, created by the human mind to tell a story about what happens in nature.

Answer explanation

A model is a testable idea, created by the human mind to tell a story about what happens in nature. The other descriptions are not true. Models do not have to be complex and should be based on many observations.