Savvas 7th Grade Ch 2 L4 Models as Tools in Science

Last updated almost 3 years ago

10 questions

1

All systems have input, _______ , and output.

A(n) _______  model might include a drawing or a three-dimensional object.

_______ is the material or energy that goes into a system.

A(n)_______ is a group of parts that work together to perform a function or produce a result.

Output that changes a system in some way is called _______ .

Some systems have feedback.

True

False

True

False

True

False

True

False

True

False

Some systems have feedback.

True

False

Mathematical equations and word descriptions are examples of models of processes.

True

False

Scientists use models to understand things they can observe directly.

True

False

When they use models, scientists keep in mind that predictions based on models are certain.

True

False

What happens in a system is called input.

True

False