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b) liquid
c) gas
d) gaseous liquid
2. The main product of oil which runs our cars, trucks, buses
and boats is:
a) hydrogen
b) carbon
c) gasoline
d) methane
3. How do we call other petroleum products which are used
to make paints, cleaner, waxes?
a) petrochemicals
b) sandstone
c) limestone
d) marble
4. Crude oil is a black, heavy liquid made up almost entirely
of two elements:
a) methane and propane
b) gasoline and gas
c) hydrogen and carbon
d) methane and carbon
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:

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