What can we do to slow
down global warming?
What is global warming?
How Airplanes Fly?
By Tooba Khan
Global warming is when the earth heats up (the
It happens when greenhouse gases (carbon dioxide,
water vapor, nitrous oxide, and methane) trap heat and
light from the sun in the earths atmosphere, which
Name : Umair
Roll No: 349
So, what is a GEYSER ?
A Geyser is .
A natural hot spring
Sprays HOT water and steam into the air
Certain conditions are required for a geyser to be
present in an area :
By Saira Tabassum
What are fossil fuels?
Millions of years ago animal and plant
remains got buried under layers and layers
of soil. As time passed the soil matter on top
of them got converted into hard rock. All of
the matter that was trapped
Forms of Energy
By Sophia Mansoori
Forms of Energy
Energy can be
one form to
Energy associated with the motion of an
Carbohydrates are a common source of energy in living organisms, however, no
carbohydrate is an essential nutrient in humans. Foods high in carbohydrate
include fruits, sweets, soft drinks, breads, pastas, beans, potatoes, bran, rice,
What are Fiber Optics?
Fiber optics(optical fibers) are long, thin
strands of very pure glass about the
are arranged in bundles
cablesand used to
By Amna Sabahat
Energy helps us do things.
It gives us light.
It warms our bodies and homes.
It bakes cakes and keeps milk cold. It runs our
TVs and our cars.
It makes us grow and move and think.
Energy is the power to change things.
It is t
Tashin Fatima Khan BsMC 2k10 369
Peak to peak wavelength
Trough to trough wavelength
E. Positive amplitude
F. Negative amplitude
Types of Waves
BS MC 2K10
A capacitor is a storage device for
A capacitor can be charged by
connecting it to a battery or any
other source of current.
What is electricity?
The collection or flow of electrons in the form of an
Electricity is a general term encompassing a
variety of phenomena resulting from the presence
and flow of electric charge.
Electricity occurs in 2 different forms
E.g. Brush your hair
Wool socks in
Flows around circuit
E.g. turn on light
Occurs with materials which are
Eating disordersrefer to a
that may involve either
The termusually refer
What Kidneys Do
Remove wastes and extra fluid from your
Control your body's chemical balance
Help control your blood pressure
Help keep your bones healthy
Help you make red blood cells
When Kidney Func
Co nduc to rs and
Ins ulato rs
Vale nc e and
c o nducintio n bands
Electrons residing the outermost shell of an atom
are called valence electrons having the highest
energy. It is these electrons which are mostly
affected when a number of atom
Chemistry In Daily
Chemistry is a big part of your everyday life.
You find chemistry in daily life in the foods
you eat, the air you breathe, your soap, your
emotions and literally every object you can
see or touch. Here's a l
By: Hafiza HiraAmjad
Fourth most abundant element in universe
Building block of all living things
Main Pathway in and out of living matter
Thecarbon cycleis the biogeochemical cycle by which
carbonis exchanged among
(COMPOSITION, BLOOD GROUPS AND
HAFIZA HIRA AMJAD
Bloodis a specializedbodily fluidthat
delivers necessary substances to the
body's individual cells(inanimals) such
as nutrients andoxygen and
transportswaste products away from
IT FLIES BUT ITS NOT A BIRD
Have you ever seen a
flying furry animal that
hangs upside down in dark
places, sleeps all day, and
guides itself by special
echoes? If you have,
If bats could think what kind of animal they
are they probab
Ato ms and Mo le c ule s
An atom is the smallest particle of an
An atom is made up of three sub particles
called the proton, neutron and electron.
The center of the atom is the nucleus.
The atomic no. is the no. o
What is an atomic power