Cardiff International School Dhaka (CISD)
Lost Class Make Up Assignment
Class: 4
Subject: IPC
Date: 1 (Sunday)-7 (Saturday) MARCH 2015
Total Mark- 20
Instructions: All of your assignment must be done in A4 size paper. Mention your Name,
Class, Roll and Section clearly on the top sheet of your assignment.
Submission Deadline: Saturday 7 March 10.00 AM to the respective subject teacher. The
deadline is strict.
Name:.........................................................................................................................................................
Class: ................................Roll#........................Sec:..................Teacher: .............................................
Sunday-Saturday
1-7 March 2015
Sunday
IPC (Social Studies)
Topics: Black Gold
Tasks: Learn different types of energy.
Q.1. What is renewable energy?
Ans: Energy exists freely in nature. Some of them exist infinitely (never run out, called RENEWABLE), the rest have
finite amounts (they took millions of years to form, and will run out one day, called NON-RENEWABLE)
With this in mind, it is a lot easier to lay any type of energy source in its right place. Let's look at these types of
energy in the diagram below:
that water, wind, sun and biomass (vegetation) are all available naturally and were not formed. The others do not
exist by themselves, they were formed. Renewable energy resources are always available to be tapped, and will not
run out. This is why some people call it Green Energy.
Monday
Topics: Black Gold
Task: Learn these Fill in the gaps:
1. Fill in the blanks.
a)
The second half of the _____________saw an increase in the use of oil.
b) The _____________________ in oil, on the other hand, are shorter than those in coal and are usually
straight, maybe with a few branches
c) The carbon chains that are in ________________ are different in character to those in coal.
d) Black gold is an informal term for oil or __________________ .
e) Oil is a major ___________ in trade.
f ). Solar power benefits do not require direct sunlight or a particular _______________.
g) Wind energy costs about the same ______________ from new coal- and gas-fired power plants. And it's
pollution-free.
h) Moving water has ____________ energy.
Answer
Monday
Topics: Black Gold
Task: Learn these Fill in the gaps:
2. Fill in the blanks.
a) The second half of the 1880s saw an increase in the use of oil.
b)The carbon cchains in oil, on the other hand, are shorter than those in coal and are usually
straight, maybe with a few branches
c)The carbon chains that are in crude oil are different in character to those in coal.
d)Black gold is an informal term for oil or petroleum.
e) Oil is a major commodity in trade.
f ). Solar power benefits do not require direct sunlight or a particular temperature
g) Wind energy costs about the same as electricity from new coal- and gas-fired power plants. And
it's pollution-free.
h) Moving water has kinetic energy .
Wednesday
Topics name: Black Gold
Write whether the following statement is true or false.
a) . Iron is a common element in the earth's crust, but it almost always occurs as a compound.
b) Iron does not melt at the temperatures that can be reached in a primitive furnace: iron is still
solid when copper and bronze are molten.
c)The Bronze Age came after the Copper Age and before the Iron Age.
d) With the introduction of copper alloys (90 percent copper and 10 percent tin), the
smith was able to produce a much harder metal.
e) Oil is not a mineral, it’s a liquid substance found deep down in the earth’s surface
bronze
Wednesday
Topics name: Black Gold
Write whether the following statement is true or false.
a) Iron is a common element in the earth's crust, but it almost always occurs as a compound.
True
b) Iron does not melt at the temperatures that can be reached in a primitive furnace: iron is still
solid when copper and bronze are molten.True
c)The Bronze Age came after the Copper Age and before the Iron Age. False
d) With the introduction of copper alloys (90 percent copper and 10 percent tin), the
smith was able to produce a much harder metal. True
bronze
e) Oil is not a mineral, it’s a liquid substance found deep down in the earth’s surface. True
IPC (Social studies)
Thursday
Topic: Black Gold
Task: Learn these question answer.
Q..1 What is solar energy?
Ans: Solar energy is energy that is derived from the sun’s rays. The light and the heat provided by the sun
is “collected” or harnessed by solar panels and then converted into a more useful form of energy. There
are two main forms of solar energy – passive solar energy and active solar energy.
Q.2Write down the formation of Fossil Fuel ?
Ans: : Forming the Oil Deposits
This last step of fossil fuel formation involves porous and non-porous rock layers. A porous layer
is one that contains lots of little holes in it, like a sponge. Basalt, a volcanic rock formed from
rapidly cooling lava, is one such rock. Non-porous rocks do not have these holes in them, but are
solid.
The oil seeps upwards through porous rocks as a result of the great pressure of the overlying
layers. It does this until it hits a non-porous layer, and there it collects, like so:
Q.3) Which one is more difficult to smelt ?
Ans: It is much more difficult to smelt iron than copper. In copper smelting, the copper
flows as a liquid to the bottom of the furnace. The slag of waste material accumulates on top of
the copper, and can be poured off to leave behind the copper. The copper is easily identified as
copper, and the process is intuitive
Help Lines:
For any assistance, please contact
b) Coordinator:
Ms Nazma Akter, Mob. No. +8804478882213
c) Lead Teachers:
Ms.Farzana, Mob.No. 01916869056
Ms. Rony,
Mob.No. 01741227190
d) Principal Head of School: G.M.Nizam Uddin, +88-01622181818, gmnu302@yahoo.com
e) Subject teacher :
Ms. Ajmen jahan 01756429412