Question

1. choose the best answer.

what is the purpose of a model?
explain how imaginary systems might function
exclude the need of math in solving science problems
always prove that predictions are inaccurate
explain a natural phenomenon

1. choose all that apply.

which two are advantages of a model?
be only an approximation of a phenomenon
are exactly like the thing they represent
study things that are very small or hard to see
save time and money before making a product

Explanation:

• For question 4: A model is used to explain natural phenomena. Imaginary systems are not the focus. Math is often used in models. Predictions can be accurate.
• For question 5: Models can study small/hard - to - see things and save time/money. Being only an approximation is not an advantage. Models are not exactly like the real thing.

Answer:

1. explain a natural phenomenon
2. study things that are very small or hard to see, save time and money before making a product