Use the laws of conservation of matter and energy to describe the consumption of fuel by a car. That is, what are the inputs and outputs of matter and energy? (Note: Gasoline is a mixture of organic compounds containing carbon-hydrogen bonds.)
What will be an ideal response?
Gasoline and oil are the primary inputs for a car. For the internal combustion engine, oil is used for lubrication so it should not be a part of the fuel, but there are times when the engine is not working properly (oil leaks) and oil is also burned. In addition to the carbon-hydrogen bonds of gasoline, there are contaminants in gasoline. Some of these contaminants are normal constituents of gasoline; others are added during refining. When gasoline is burned using oxygen (another input) from the atmosphere, the contaminants are also released to the atmosphere.
The energy contained in gasoline is released during burning. During this conversion of energy some of the energy is converted to work (forward motion) and some is converted to heat and "lost" to the atmosphere. The first law of thermodynamics is demonstrated by the conversion from gasoline to forward motion and heat. The second law of thermodynamics is demonstrated by the disorder that is created. Gasoline is very concentrated energy. The heat energy is dissipated. Additionally, the contaminants in the gasoline are dispersed. The law of conservation of matter is also at work here; no matter is created or destroyed, it only changes form. The carbon is changed from gasoline to carbon dioxide. Carbon dioxide is a greenhouse gas.
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Barrier islands are:a
perpendicular to the shore. b. formed when sediments accumulate on submerged rises. c. broad and offshore d. connected to the shore.
Which is NOT TRUE regarding foreign debt?
A) Much of the developing world is deeply in debt to foreign governments and banks. B) The origins of the debt crisis lie in the 1910s and 1920s. C) Debts raise concerns about the stability of the international monetary system. D) Debt repayment can be difficult for developing countries. E) All of the above are false.
For the last 10,000 years as a whole, Earth temperatures can be said to be________
A) warm and fairly steady B) unchanged C) warmed drastically D) cooled drastically E) in an Ice Age
When were the data created?
Earthquakes are one of the biggest natural disaster risks in some parts of the world. In this exercise you will add the USA Earthquake Risk layer to your map and assess the earthquake risk in several areas. Find the USA Earthquake Risk layer by selecting “Add” then “Browse Living Atlas Layers.” Next select “Landscape” then “Ecology” and “USA Earthquake Risk.” Add the layer to your map by clicking “Add layer to map (as layer).” In the Content window on the left side of the screen, click on the ellipses below the layer name and then select “Show item details.” A new screen should appear in your web browser that describes the dataset in the Description and Dataset Summary sections. If more information about the dataset is desired, users can click on “Link to source metadata” toward the bottom of the page. Answer the question about the dataset.