In this engineering lab, you will build and test a device that releases and absorbs thermal energy in order to reach a goal. Don't forget what you learned about repeated trials. You will need to repeat tests of your device to make sure it does not need to be redesigned or improved. Use the Thermal Energy and Chemical Change Lab Report to record your observations and test measurements. You will submit your completed report. Be sure to review the grading rubric before you begin. Thermal Energy Engineering Building Criteria and Limitations You must have at least one steam engine and one cargo box in your train design. Everything else is up to you—build items across, or stack items on top of each other. The train track will have two hills and spaces where the track is missing. Consider these limitations when designing your train. Make sure you note these criteria and limitations in your lab worksheet. Before you test your trains, plan at least three train designs. Add these design descri

At these trading houses we have kept prices low. we have driven out private traders and those who would make the indians suspicious and fearful of us. in doing so, we have earned the good will of the indians. a letter enclosed shows the effect of this. the indians see the advantage of purchasing from us and request that we establish trading houses among them. in one area this is particularly interesting. the congress must know how much we want to control a large stretch of land on the mississippi river. this would allow us to present as strong of a defense on that side of our territory as on our eastern border. we already control what is below the yazoo river. however, the country between the yazoo river and the ohio river belongs to the chickasaw indians. this tribe refuses to sell its land, but they have recently shown a desire to begin farming. this leads to buying goods and comforts. if we grant these desires, we may be able to secure land on the mississippi. now that trade is expanding among the indian tribes, congress may wish to point our citizens in another direction. the missouri river is not well known to us. it crosses a mild climate and offers a route from the western ocean to the atlantic. an intelligent officer and a team of men might explore the whole route of the river to the western ocean. they could speak with natives, find opportunities for our traders, and return with information after two summers. their arms, tools and gifts for the indians would be the primary costs of the expedition. it would benefit our nation to explore this territory because it offers the only easy way to travel across the continent. the interests of trade give congress the power to approve this expedition. learning more about the geography of our continent is another reason to make this voyage. $2,500 is requested for the purpose of extending trade across the united states. this sum will cover the entire undertaking. what did thomas jefferson suggest congress do in response to the native americans?