Instructions: In this engineering lab, you will build and test a device that releases and absorbs thermal energy in order to reach a goal. You will need to repeat tests of your device to make sure it does not need to be redesigned or improved. Record your observations and test measurements in the lab report below. You will submit your completed report. Note: If you cannot complete this lab as directed, please contact your instructor for assistance.

Name and Title:
Include your name, instructor's name, date, and name of lab.

Define the Problem:
In your own words, what is the goal of the engineering lab?

Criteria and Limitations:
In this section, please list at least three criteria that must be met by your train design. Also include any limitations that could prevent it from getting its cargo to the station.

Criteria Limitations

Design Ideas—Pros and Cons:
In this section, describe three design ideas you have for your train. List at least one pro (a positive) and one con (a negative) for each design option.

Description of Train Design Pro Con
Train One
Train Two
Train Three
Data:
Record the results of each of the test runs you make to the train station. Be sure to describe any changes you make to your train between each test run.

Train One Train Two Train Three
Test Results? Any redesign?
Test Results? Any redesign?
Test Results?
Track One
Track Two
Track Three

Analyze Data and Refine Design:
This section will include an analysis of your test results and plans for redesigning your train. Please write in complete sentences.

Were any of your train designs able to get their cargo to the train station without crashing?
If yes, describe the design of the successful train.
If no, describe the design of the train that got closest to the station.

Which of your criteria presented the most challenge to getting the train to its goal, and why?

Which limitation was the biggest roadblock to getting the train to the station?

Why was it important to have endothermic and exothermic processes in the building materials of your train?
Which engines released thermal energy in an exothermic reaction?
Which engines absorbed thermal energy in an endothermic reaction?

If you could add any building item options to your virtual train to improve its design, what would those items be, and why would you need to add them?