24. Mars\' thick atmosphere creates a surface pressure of 90 atmospheres (90 tim

Question

24. Mars' thick atmosphere creates a surface pressure of 90 atmospheres (90 times the weight of the atmosphere on Earth at sea level).

22. We can see the rocky surface of Venus with regular (optical) telescopes (including the Hubble).

21. The light colored areas on the Moon are made of limestone.

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.

1. Pegmatites are rocks with unusually large crystals (a few inches to a few feet in length).

Explanation / Answer

Question 1
Answer: True
Pegmatites rocks have unusually large crystals (a few inches to a few feet in length) are true.
Pegmatite has extremely coarse grained crystals and these are commonly associated with the granites. Their composition is usually granitic.

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