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Savvas 8th Ch 2 L4 Models and Systems

Last updated over 2 years ago

10 questions

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Question 1

1.

Scientists test their ideas about things they cannot observe directly by building

models

theories

systems

evidence

Question 2

2.

Models can help scientists understand a system’s

assumptions

investigations

processes

theories

Question 3

3.

Input, output, and process are parts of a(n)

system

assumption

model

hypothesis

Question 4

4.

Scientists may use a computer to keep track of the variables in a complex

model

program

feedback

system

Question 5

5.

A(n) simple system is difficult to model.

True

False

Question 6

6.

The mercury cycle, water cycle, and rock cycle are all models.

True

False

Question 7

7.

Your heart pumping faster when you exercise is an example of input.

True

False

Question 8

8.

Scientists may make assumptions to simplify a model.

True

False

Question 9

9.

The output of a toaster is electricity.

True

False

Question 10

10.

All models are physical objects.

True

False