Page 41 - GK 4

GRADE 4 Start Up G.K

25 Bright brains Albert Einstein:
He was a very famous scientist. In 1915 he gave the world
the ‘Theory of Relativity.’ He was also awarded the Nobel
Here are a few scientists and inventors who made life easy for us through Prize for Physics in 1921.

their inventions and discoveries. Let us know more about them.

Galileo Galilee: Isaac Newton: Let us first understand the difficult words.

He was a famous He was a famous 1. gravity: force that pulls two objects towards each other
astronomer and scientist who 2. optics: the science of light

mathematician. He developed the theory
is best known for of gravity, the laws 3. meteorology: the study of atmosphere and the weather
his invention of the of motion, a new type 4. patent: the right of the inventor to make, use and offer for sale his invention
modern day telescope. of mathematics called 5. phonograph: machine able to record and playback sounds.
calculus and made some major
discoveries in the field of optics. He Now, find answers to the following questions in the word grid below.
discovered gravity when he saw an 1. Galileo Galilee is best known for the invention of which scientific
apple fall from a tree. instrument?

2. Who discovered gravity when he saw an apple falling from a tree?
Benjamin Franklin:
3. Which word describes the right of an inventor to make, use and offer for
He was a statesman and inventor. He is most famous for his sale his invention?
experiments in electricity, cooling, meteorology, printing
and the wave theory of light. He never patented any of the 4. Charles Darwin came up with the idea that all living things change slowly
inventions, letting people use his ideas for free. over thousands of years. What did he call this change?

5. This inventor has over thousand E T I A L U R E N I S T
patents in his name. His first P A T E N T E D I C H O
Charles Darwin:
name is Thomas. What is his E A R E M A T I P I T Y
He was an English scientist who travelled and studied about last name? O S I T I O N S U T E N
living things. During his travel, he came up with the idea that 6. Meteorology is the study of
all living things change slowly over thousands of years. He atmosphere and . P E A T I L E O T I L E
called this change evolution. He is most known for his ‘Theory T U A N I C A N E A E R
of Evolution.’ I C A O N U A P U I S Y
Info-bites C O S I A N E O N A C U

Einstein was a bit S A C E V O L U T I O N
disorganised. He forgot
Thomas Alva Edison: his appointments. He A L E A N T O L O G P I
had uncombed hair E S Y I U W E A T H E R
He was one of the greatest inventors in history. He has over and never wore socks!
1000 patents in his name. He is most famous for the invention However his brain was U A M I T E A M E S O L
of the light bulb, the phonograph and the motion picture. perfectly organised. I S A A C N E W T O N U
E R O S T I B E A N E C
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