Savvas 7th Grade Ch 2 L4 Models as Tools in Science
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Last updated over 2 years ago
10 questions
1
All systems have input, _______ , and output.
1
A(n) _______ model might include a drawing or a three-dimensional object.
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_______ is the material or energy that goes into a system.
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A(n)_______ is a group of parts that work together to perform a function or produce a result.
1
Output that changes a system in some way is called _______ .
1
Some systems have feedback.
Some systems have feedback.
1
Mathematical equations and word descriptions are examples of models of processes.
Mathematical equations and word descriptions are examples of models of processes.
1
Scientists use models to understand things they can observe directly.
Scientists use models to understand things they can observe directly.
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When they use models, scientists keep in mind that predictions based on models are certain.
When they use models, scientists keep in mind that predictions based on models are certain.
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What happens in a system is called input.
What happens in a system is called input.