a. Define the word hydrocarbon? | A compound containing only hydrogen and carbon |
b. Crude oil is made mixture of many hydrocarbon | crude oil is made of many hydrocarbon |
c. What is crude oil made from? | bodies of tiny sea creatures and plants and plankton that died |
d. How long does it take to make? | 150 million years |
e. Where does the energy originally come from? | the Sun |
f. How is crude oil different from coal? | crude oil was formed from tiny animals and plants which lived in the sea, whereas choal came from trees and ferns that died and were buried beaneath the swamps |
g. Crude oil, coal and natural gas are collectively known as _________ fuels | fossil |
h. How is crude oil transported when it is extracted from the ground? | By pipeline or oil tanker |
