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5. The combination of atoms of hydrogen and carbon took
place inside the earth … of years ago:
a) billions
b) hundreds
c) thousands
d) millions
6. The earth’s uneasy surface was affected by: (according to
the text)
a) earthquakes and volcanoes
b) erosion
c) weathering
d) heat and pressure
7. In what way was the coal formed:
a) from rotted sea creatures
b) from rotted animals and plants
c) from rotted fish
d) no answer is correct
8. What are the types of oil bases?
a) asphalt, paraffin and wax bases
b) gasoline and lubricant bases
c) hydrogen or carbon bases
d) no answer is correct
9. Soft rock is represented be the following types of rocks:
(according to the text)
a) marble
b) quartzite
c) sandstone and limestone
d) no answer is correct
10. How are tiny openings called where the oil accumulates:
a) rock
b) reservoir
c) trend
d) pore

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