10Sc&T

Mathematics

100

Given that a=2 b=-6 c=3

Find (a+cb)/2 

Ans=-8

200

Given that x=3 y=1 z=0

find (x+y) (x+z)/xy

Ans= 3

300

Factorize 6x²-5x-4

Ans= (3x + 4) (2x - 1)

400

Rewrite 4x²-6x-2x+3=0

Ans= X=1/2 and X=3/2

   

500

Express the function f(x)=-2x²-4x+3 in the form of a(x+h)²+K

Ans=a(x+h)²+K= -2(x-1)²-5

Physics

100

What is the SI unit for resistance?

Ans= Ohm

200

What is the SI unit for voltage and power?

Ans= Volt and Watt

300

What are the fundamental quantities in KgmA/S³?

Ans= Mass, Length, Electric current and Time

400

Convert from 37C to F

Ans=98.6F

500

Calculate the Pressure under a girl's foot in Pascals if her mass is 33.6kg and the area of her shoe is 168cm²

Ans= 2.0*10⁴ Pa

Biology

100

Location of aveoli

Ans=Lungs

200

What is respiration?

Ans= Process by which engery is released from food by oxidization.

300

List 5 parts of an animal cell

Ans=Golgi Vesicle, Cell membrane, micro-tubules, endoplasmic reticulum, ribosomes, nucleolus, chromosome, cytoplasm, glycogen granules, mitochondria

400

Why does the aorta have the thickest walls of all the vessels in the circulatory systems?

Ans= The aorta receives blood at the highest pressure from the contraction of the muscles of the left ventricle. as the blood enters the aorta, its thick muscular walls are stretched but do not burst.

500

What is osmoregulation?

Ans= Osmoregulation is the maintenance of constant osmotic conditions in the body.

Chemistry

100

What is the Proton # of Magnesium?

Ans=12

200

What is the formula for Calcium Ethonate?

Ans=(CH₃coo)₂Ca

300

The product of acids and carbonates are

Ans= Salt+CO₂+H₂O

400

How can concentrated acid be diluted?

Ans= by adding the acid slowly to distilled H₂O

500

What kind of reaction is given off when an acid ionizes upon being added to H₂O?

Ans= Exothermic 

Geography

100

Rock formed from heat and pressure

Ans=Metamorphic

200

The gradual movement of continents across the surface of the earth

Ans=Plate tectonics

300

What is a Stalactite?

Ans=A stalactite is a type of formation that hangs from the ceiling of caves, hot springs, or manmade structures such as bridges and mines. Any material that is soluble, can be deposited as a colloid, or is in suspension, or is capable of being melted, may form a stalactite.

400

Give 2 ways how volcanoes are formed.

Ans= Colliding plates at a zone of convergence or subduction, As plate move apart in a zone of divergence, volcanic eruptions through fissures, At hot spots.

500

How is cyclonic rainfall formed?

Ans= By temporary low pressure systems called depressions or cyclones.