Part 2
Attempt only five questions:All questions carry eqaul marks
Q.2 Discuss the contributions of the Muslim Scientists in the development of Astronomy,Algebra and Trignometry.

Q.3 Give brief answers to the following:
a.why we bring our hands close our mouth while shouting across to someone far away.
b.why do we lean forward while climbing a hill
c.why does a swimming pool appear less deep than it actually is?
d.why cannot petrol fire be extinguished by water.
e.Why do Austrailian celebrate their christmas during summer.

Q.4 Differentiate between
a.hypoglycemia and hyperglycemia
b.renewable and non renewable energy resources
c.Lava and Magma
d.Mist and Fog
e.Lunar eclipse and solar eclipse

Q.5 Briefly Explain the principle of the following
a.Radar
b.Microwave oven

Q.6 Give brief explanations for the following phenonmena
a.while watching a cricket match we see the ball struck a moment before we hear the sound of the bat hitting the ball.
b.a ship though made largely of the steel,which is heavier than water, floats in water.
c.the color of the same cloth whe seen in electric light appears different from the color when seen in day light.
d.glass when heated cracks while metal does not.
e.although each eye perceives a separate image,we do not see everything double.

Q.7 write short notes on the following
a.environmental effects of the fertilizer use
b.Global warming

Q.8 Differente between
a.smog and smoke
b.radiotherapy and chemotherapy
c.diastolic and systolic pressure
d.infection and Allergy
e.conductors and insulators

Q.9 Briefly explain the function of the following in human body.
a.kidneys
b.lymphatic system
c.thyroid gland
d.pituitary gland.