National Science Olympiad Forum By SOF Olympiad Trainer - Page 784

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Subject :NSO    Class : Class 5

Ans 1:

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.

Ans 2:

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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Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

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

Ans 3:

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.

Ans 4:

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

Ans 5:

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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Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

Class : Class 9
in diamond

Ans 3:

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

Ans 4:

Class : Class 8
Aluminium

Ans 5:

Class : Class 8
iron or steel

Ans 6:

Class : Class 8
in the hardest metal Chromium

Ans 7:

Class : Class 8
STEEL

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
thermal conduction was originally called as diffusion

Ans 2:

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.

Ans 3:

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 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

Ans 2:

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

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Humble law

Ans 2:

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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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
Rhopalocera or Lepidoptera

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Uranus

Ans 2:

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

Ans 3:

Class : Class 5
uranus

Ans 4:

Class : Class 10
Uranus

Ans 5:

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

Ans 6:

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

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Subject :NSO    Class : Class 10

Ans 1:

Class : Class 10
regular

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
peristaltic movement

Ans 2:

Class : Class 8
it reach stomach because of Peristalsis movement

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