20. Placers are sedimentary deposits with a concentrate of heavy minerals such a
ID: 120152 • Letter: 2
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20. Placers are sedimentary deposits with a concentrate of heavy minerals such as gold and or platinum
19. Coal is made from dead sea plants such as kelp.
18.Burning coal can ultimately create acid rain.
17. Today, we are currently mining (pumping) oil from the sediments on the continental shelves because we do not want to wait for the millions of years it would take for plate tectonics to lift the rocks above sea level.
15. Most of the oil deposits on land today are actually ocean floor sediments that have been uplifted above sea level by plate tectonics.
14. Non-renewable resources form over millions of years and can not be replenished in just a few months, years or decades.
13. Renewable resources generally include trees, animals, and plants
12.Renewable resources include coal and oil because more is created naturally in a few hundred years
11. Placers are commonly found in streambeds.
10. Non-renewable resources can be replenished over a relatively short time such as months, years or decades.
9. An oil 'gusher' is basically an artesian oil well.
8.Hydroelectric power is the energy from moving (falling) water.
7.Coal is made from dead plant material that was buried quickly - before it was decomposed and recycled into the ecosystem.
6. Oil is usually formed in layers of mud on the ocean floor, and near the edges of the continents.
5. Geothermal energy is an alternate energy source.
4. Solar energy is an alternate energy source.
3. Sometimes, oil will naturally migrate upwards through the rock layers until it reaches the surface and leaks out. The exposed oil will then evaporate and decompose into the ecosystem.
2. Because oil is a liquid, it often moves from the mud-rich rock (shale) where it was formed, into adjacent rocks with sufficient porosity and permeability to allow the movement of fluids such as oil and water.
True Nuclear power Coal 23% Natural Gas 24% Renewable energy 6% Solar 1% Petroleum 39% Biomass 50% Hydroelectric 42% Wind Geothermal 1% 6% Total = 96.935 quadrillion btu Total 5.668 quadrillion btu FIGURE 21.4 U.S. energy consumption, 2001. The total was nearly 97 quadrillion Btu. A quadrillion, by the way, is 10 raised to the 12th power, or a million million-a quadrillion Btu is a conven- ient unit for referring to U.S. energy use as a whole. (Source: U.S. Department of Energy, Energy Information Administration)Explanation / Answer
20. True, Placers are the sedimentary deposits with a concentrate of heavy minerals such as gold
19.false, coal is formed when dead plant and animal matter is converted into peat
18.true, when coal is burnt sulphur reacts with oxygen and forms sulphur dioxide and later forms sulphur trioxide....this reacts with water and ultimately forms sulphuric acid which is the acid rain
17.true...we get today's oil from sedimentary deposits
16. True...it can be seen in pie chart
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