Topics from April 2017
- How is soil formed?
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- Why do objects appear coloured?
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- Which planets have satellites?
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- How does a currency counting machine work?
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- What is a Silicon Chip?
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- What is a space suit?
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- How is the distance of stars from the earth measured?
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- How can we test the purity of milk?
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- What is Paging Service?
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- What is Electronic Mail?
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- How are submarines detected under the sea?
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- Why can’t we fly like birds?
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- What is Internet?
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- What is a Hydrogen Bomb?
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- How are valleys formed?
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- What is FM transmission?
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- What is Multimedia?
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- How was the Earth formed?
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- What is there inside the Earth?
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- How do we measure the mass of the Earth?
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- What is the Earth’s force of gravity?
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- Why don’t we feel the Earth’s motion?
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- How many kinds of climate are there?
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- How seasons change?
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- What is atmosphere?
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- What is air and how is it useful for us?
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- Does air have weight?
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- How is the wind velocity measured?
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- How does it rain?
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- What is monsoon?
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- How are clouds formed?
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- What are tornadoes, hurricanes and cyclones?
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- How are hails formed?
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- How is fog formed?
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- What are lightning and thunder?
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- How were mountains formed?
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- How were rivers formed?
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- How are caves formed?
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- How are Volcanoes formed?
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- What causes an Earthquake?
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- How are lakes formed?
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- How are springs formed?
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- How are waterfalls formed?
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- What are glaciers?
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- Why is the sea water salty?
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- How were the oceans formed?
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- What is Dead Sea?
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- Are there mountains inside the sea?
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- How does a Zip Fastener work?
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- How does an Electric Typewriter work?
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- How does an Aerosol spray work?
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- What is radar and how does it work?
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- What is an Atom Bomb?
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- How was the rocket developed?
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- How was the submarine invented?
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- What is Superconductivity?
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- How was the telephone invented?
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- Who invented transistor?
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- Is there life on other planets?
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- How did the universe come into existence?
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- What is the Milky Way?
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- How are stars formed?
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- Why are some stars brighter than others?
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- What is the Solar System?
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- What is the Sun?
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- What are the Sun spots?
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- What is Solar Eclipse?
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- What are Meteorites?
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- What is the Moon’s force of gravity?
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- What are Comets?
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- What are the rings of the Saturn?
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- What is Moon - the only satellite of the Earth?
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- How distant are stars from us?
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- What is the Zodiac?
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- What is lunar eclipse?
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- What is a Compact Disc?
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- What is the principle of an autopilot?
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- What is bar code?
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- What is LPG?
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- How does a steam iron work?
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- What is the remote control of a television set?
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- What is automatic door operation?
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- What is an Alkaline Battery?
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- How is synthetic rubber made?
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- How are skyscrapers built?
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- What is a cellular phone?
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- What is star Television?
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- How is food packed in cans?
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- How does a dish washer work?
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- How does a washing machine work?
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- What are the constituents of milk?
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- What is Water?
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- What is Uranium?
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- How is silk produced?
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- How do we get petrol?
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- What is marble?
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- Why are fireworks colourful?
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- What is echo?
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- Why does the rising and setting Sun appear red?
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- How are the Pearls formed?
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- What is Plastic Surgery?
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- What are different types of telescopes?
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- What is Plastic?
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- What are the methods of time measurement?
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- What is dry ice?
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- How do we see clearly with spectacles?
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- How do we get Wool from Sheep?
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- How is copper useful to us?
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- What is helium?
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- How is oxygen useful to us?
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- How is liquid converted into vapour?
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- How is Silicon useful to us?
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- Why do hot things burn us?
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- How is dew formed?
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- Why do watches have jewels?
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- Are the molecules of all substances in motion?
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- Why is gold so costly?
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- How is the rainbow formed?
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- How is dust useful to us?
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- Why does ice float on water?
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