ht questions. Remember to add any new sources you use to your list of websites.

3. How does concrete differ from cement? How are they similar? (2 points)






4. What natural materials are used to make cement and concrete? (2 points)






5. Many of the natural resources used to make cement and concrete are obtained from quarries. What is a quarry? What are the environmental impacts of quarries? (3 points)









6. How is cement made? (3 points)









7. How is concrete made? (3 points)









8. How does the production of concrete contribute to carbon dioxide emissions? (3 points)









9. What are four types of structures that are made using concrete? (2 points)






10. What properties of concrete explain why it is used to make the structures you listed in question 9? (2 points)






Part 3: Make a Flowchart (10 points)
Engineers often use flowcharts to summarize processes, including those used to make synthetic materials. A flowchart is a type of model that shows the inputs and outputs of a process. The ingredients used to make a material are examples of inputs. Outputs are the materials that are produced, including unused ones like carbon dioxide. Here is a sample flowchart for making bread:

Flowchart for how to make bread
Make a flowchart that summarizes what you learned about concrete. It should include the following information about the inputs, outputs, and processes used to make concrete:

The natural resources used to make cement and concrete and how they are obtained
The ingredients and processes used to make cement
The ingredients and processes used to make concrete
Any outputs other than cement and concrete that you learned about
The structures concrete is used to build as final outputs
Comments about the positive and negative impacts of any inputs, outputs, or processes