PAOC Ka Chi Secondary School
F. 1 Integrated Science
Supply and Demand of Petroleum
Name: _______________________
Class: _________
Worksheet 1
Item
“more than”, “less than”, “the same”
A
B
Comparison
A is ________________ B.
No. of plates
B is ________________ A.
A is ________________ B.
Amount of fruit
B is ________________ A.
A is ________________ B.
No. of candies
B is ________________ A.
A is ________________ B.
No. of books
B is ________________ A.
No. of people
A and B are ______________.
Worksheet 2
“Supply” and “Demand”
1. A class has thirty students. They have to draw pictures. There are twenty five coloured pens.
Supply: _________________
Demand: _________________
The supply is ________________________ the demand.
2. Father bought sixteen slices of pizza. There are four of us. Each of us eats three slices.
Supply: _________________
Demand: _________________
The supply is ________________________ the demand.
3. We want to buy twenty bottles of Coca Cola. The store has sixteen bottles.
Supply: _________________
Demand: _________________
The supply is ________________________ the demand.
Worksheet 3
Supply and demand of petroleum
1. How much is the supply of LPG?
_____________ % of petroleum.
2. How much is the demand of LPG?
_____________ % of petroleum.
3. The supply and demand of LPG are ___________________________ .
4. How much is the supply of petrol?
_____________ % of petroleum.
5. How much is the demand of petrol?
_____________ % of petroleum.
6. The supply of petrol is __________________________ the demand of petrol.
7. How much is the supply of heavy oil?
_____________ % of petroleum.
8. How much is the demand of heavy oil? _____________ % of petroleum/
9. The supply of heavy oil is _______________________ the demand of heavy oil.
Worksheet 4
Explaining the demand of petroleum fractions
1. What is the use of petrol?
_______________________________
2. Why is the demand of petrol so high?
_____________________________________________________
______________________________________________________________________________________
3. What are the uses of diesel oil? ____________________________________________________________
4. Why is the demand of diesel oil so high?
_________________________________________________
______________________________________________________________________________________
5. What can be done to balance the supply and demand of petroleum fractions?
_____________________
______________________________________________________________________________________
Worksheet 5
Passage writing
Now write a short passage, using the sentence patterns that you have learned, on the supply and demand of
petroleum fractions, with explanations and suggestions.
The Supply and Demand of Petroleum Fractions
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
Appendix
gas
supply
% of tota l pe trole um fra c tion
demand
petrol
naphtha kerosene gas oil
heavy oil(fuel oil and lubricating oil)
Supply
dem and for
5% and10%
5%the different
20% fractions
15% of petroleum
45%
5%
25%
5%
25%
35%
5%
45%
40%
35%
30%
25%
20%
15%
10%
5%
0%
supply
demand
gas
petrol
naphtha
kerosene
gas oil
heavy
oil(fuel oil
and
lubricatin