Skills Lesson: Modeling Systems and Cycles Answers

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When modeling a scientific process, it is more important to organize the parts in a way that makes sense to you than to list them sequentially.

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Amanda is doing a report for her Earth Science class about the four seasons. Which of the following would be an effective scientific model to incorporate in her project?

A
A calendar indicating the first days of autumn, winter, spring, and summer
B
Four earth models, each with a different tilt to represent the earth’s position relative to the sun, lined up in order of season
C
A poster board with pictures of weather characteristic of the four seasons
D
A bar graph indicating average high and low temperatures for Amanda’s area in the autumn, winter, spring, and summer
3

Coach Taylor is trying to explain the negative side effects smoking has to athletic performance. Which of these options include both a scientific model and a connection to Coach Taylor’s topic of athletic performance?

A
Show pictures of the lungs of a smoker as compared to a non-smoker
B
Write the chemical formulas for carbon monoxide (found in tobacco smoke) and oxygen, comparing the two substances
C
Diagram the flow of oxygen-rich blood through the body of a non-smoker. Then diagram the flow of blood with less oxygen (from airway resistance) through the body of a smoker
D
List some diseases linked to smoking: cardiovascular disease, lung cancer, emphysema
4

Connie needs to choose a current event to write about for the school newspaper. Her teacher would also like the article to include a visual aid, modeling a system or cycle. Of these options, which would best satisfy the assignment requirements?

A
Connie chooses influenza as her current event, since the article is being written during flu season. For her visual aid, she models the life cycle of the flu virus.
B
Connie chooses college application requirements, since the article is being written close to the application deadline. For her visual aid, she includes diagrams of several in-state campuses.
C
Connie chooses spring break destinations as her current event, since the article is being written a few months before spring break. For her visual aid, she includes a price comparison chart of several destinations.
D
Connie chooses water quality as her current event, since the local news recently criticized water quality in their area. For her visual aid, she makes a data table of contaminants and their abundance in the local water supply.
5

A scientific model is easier to interpret and understand when it includes the main parts or processes, rather than every detail of every part or process.

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