National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 3

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Class : Class 5
Photosynthesis Plants need air water and sunlight to make food

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Class : Class 5
The process in which plants make their food is called photosynthesis. They need air, water and sunlight to make their food

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Class : Class 5
Photosynthesis. Plants need sunlight ,water and carbondioxide to make their food.

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Class : Class 4
Photosynthesis is the process of plant making food. They need Air, Water, Sunlight, carbondioxide and chlorophyll to make food. Chorophyll - The green colour pigment present in leaves.

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Subject :NSO    Class : Class 6

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Class : Class 6
A human baby has 300 bones.

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Class : Class 6
A human baby has 300 bones.But as he/she grows the bones fuse and join together to form new better and stronger bones.

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Class : Class 8
A NEW BORN BABY HAS 300 BONES. BUT THEY BECOME LESS AS THE BONES FUSE WITH GROWING AGE OF HUMAN BEINGS

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Class : Class 8
About 300 bones. They fuse and make better, stronger bones when the child grows up.

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Class : Class 7
Human body has 206 bones and a new born baby has 300 bones. The bones decrease in number as they grow because the bones combine and come to a count of 206.

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Class : Class 8
A small child has 300 bones .As the child grows many bones fuse together

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Subject :NSO    Class : Class 5

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Class : Class 4
mt etna of italy. It emurted lava in AD69

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Class : Class 5
MT ETNA of Italy is the worlds oldest active volcano.The first record of eruption dates back 1500 BC,ETNA has erupted 190 times....

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Subject :NSO    Class : Class 4

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Class : Class 5
Punita Arora

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Subject :NSO    Class : Class 4

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Class : Class 4
Schuler Skaats wheeler has invented fan. Nikunj Bansal

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
kilauea volcano

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
absence of frictional force

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Class : Class 5
less friction

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Class : Class 6
We slip on ice because of less friction

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Class : Class 5
We cannot walk on ice because of reduced frictional force.Ice is also very smooth. Smooth surfaces have reduced friction while rough surfaces have a lot of friction.Friction is also known as a necessary evil because it is very necessary in life but causes harm in form of wear and tear. It also produces heat. Some good examples of friction are: a) rubbing of hands b) ball stops after moving for a while Ice skaters have special blades for skating on ice. There skates have blades that cut the ice and make a strong grip to let them skate.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
A thrown up ball falling back to us.

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Class : Class 6
The pull of the Earth is called gravitational force. eg are the coming down of a ball

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Class : Class 5
Whenever we throw a ball up in the air, it falls back to the ground . This is because of a force called gravitational force or gravity.This is the force in which all the objects are pulled towards the earth. Sir Isaac Newton was the first man to discover it.

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