National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Because they are hunted by hunters for food and other purposes

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Class : Class 5
Tigers are becoming extinct due to poaching and disturbing their natural habitat

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Class : Class 8
We humans destroy the habitat of tiger and poachers hunt them for their skin,nail and teeth.This is the reason for tiger becoming extinct.

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Class : Class 7
Tigers are becoming extinct as poachers are hunting them and when we cut down forests their natural habitat are also becoming less.They need a vast area to hunt.

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Class : Class 7
Tigers are becoming extinct due to poaching and we are disturbing their natural habitat.Tigers are also a very endangered species of animal.They are commonly found in India,China and Bhutan.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Butterflies suck nectar using their tube like mouth.

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Class : Class 5
It is called a proboscis and is a long flexible tube like straw that is the butterfly's tongue. The butterfly uses the proboscis to drink nectar and when it is not in use it curls back into a spiral.

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Class : Class 8
Butterflies have the taste sensor on their feet.Thus they suck nectar through their feet.

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Class : Class 6
butterflies suck nectar with the help of proboscis

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
Echolocation is the using of echo to locate object or find a prey.Animals like Bat sends vibrations that bounce off from the body of their prey.Then they with the help the vibrations they can locate food easily.

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Class : Class 8
Echolocation is to use the echo( vibrations of sound bounced off by objects ) to locate certain items. Bats use echolocation to travel.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Nomads are people who live in hilly and mountain regions.

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Class : Class 6
early man are called nomads i.e move from one place to another.

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Class : Class 6
NOMADS ARE THOSE PEOPLE WHO MOVE FROM ONE PLACE TO ANOTHER AND DO NOT HAVE A PERMANENT HOUSE

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Class : Class 5
People who do not have houses, they roam around on place and another.

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Class : Class 8
When early human beings noticed that they are not getting sufficient amount of food to survive, they started moving from one place to another in search of food and shelter and they were called nomads.

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Subject :NSO    Class : Class 8

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Class : Class 8
STEEL

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Class : Class 9
Steel is an alloy....and he asked metal. I guess the answer is Aluminium.

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Class : Class 9
in diamond

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Class : Class 8
Aluminium

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Class : Class 8
in the hardest metal Chromium

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Class : Class 8
iron or steel

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Class : Class 9
Aluminium i.e. 6420m/s

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
thermal conduction was originally called as diffusion

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Class : Class 8
conduction -the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts. diffusion -a reflection or refraction of light or other electromagnetic radiation from an irregular surface or an erratic dispersion through a surface; scattering.

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Class : Class 8
The transfer of heat from one substance to another by direct contact is called conduction or diffusion.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Because varnish paints are immixable with water but it is mixable with turpentine oil.

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Class : Class 8
Turpentine is used by the painter for thinning oil colors and for making ... irritations on their hands after contact with even small amounts of turpentine. ... use of turpentine to remove oil paint

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Subject :NSO    Class : Class 5

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Class : Class 8
The American astronomer Edwin Hubble made the observations in 1925 and was the first to prove that the universe is expanding. He proved that there is a direct relationship between the speeds of distant galaxies and their distances from Earth. This is now known as Hubble's Law.

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Class : Class 5
Humble law

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Subject :NSO    Class : Class 3

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Class : Class 3
Rhopalocera or Lepidoptera

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Subject :NSO    Class : Class 4

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Class : Class 4
The full form of IAU is International Astronomical Union.

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Class : Class 5
uranus

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Class : Class 8
Jupiter has 3 Rings, Uranus has 13 Rings, Neptune has 6 Rings & Saturn has 12 Rings.

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Class : Class 8
Uranus

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Class : Class 4
Uranus

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Class : Class 7
Jupiter has 3 rings. Uranus has 13 rings. Neptune has 5 rings

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