The World of Growing Knowledge - 1 Class 5 Worksheet SST

Q1: True or False

(i) The early man used sounds like those of animals to communicate.
(ii) Hieroglyphics is a system of writing that uses pictures and symbols to represent words.
(iii) The Sumerians were the first people to introduce a system of writing called Cuneiform.
(iv) The Brahmi script is the earliest script among the ancient scripts of India.
(v) All Indian scripts are written as they are pronounced.
(vi) The concept of zero and the decimal system was introduced by Egypt.
(vii) The word "paper" is derived from the grass-like aquatic plant called papyrus.
(viii) The art of printing was developed in China around 500 CE.
(ix) Johann Gutenberg invented the first printing press in Germany.

(x) The Braille script was developed for people who cannot hear.
Ans: 
(i) True
(ii) True
(iii) True
(iv) True
(v) True
(vi) False
(vii) True
(viii) True
(ix) True
(x) False

Q2: Match the Following

Ans:

Q3: Fill in the Blanks

(i) The earliest form of writing using pictures and symbols is called ________________.
(ii) The national language of India, Hindi, is written in the ________________ script.
(iii) The decimal system and concept of zero were introduced by ________________.
(iv) The first printing press was invented by ________________ in Germany.
(v) The Braille script was developed by ________________ for people who cannot see.

Ans: 
(i) Hieroglyphics
(ii) Devanagari
(iii) India
(iv) Johann Gutenberg
(v) Louis Braille

Q4: Short Answer Type Questions

(i) How did the early man communicate before the development of language?
Ans: Before the development of language, the early man communicated by making sounds like those of animals.

(ii) What is Hieroglyphics and where was it used?
Ans: Hieroglyphics is a system of writing that uses pictures and symbols to represent words. It was used in Mesopotamia and ancient Egypt.

(iii) Who introduced the system of writing called Cuneiform?
Ans: The Sumerians introduced the system of writing called Cuneiform.

(iv) Describe the importance of the Brahmi script in India.
Ans: The Brahmi script is significant in India as it is the earliest script that has been deciphered among the ancient scripts of India. It is the basis for many Indian scripts, including Devanagari.

(v) What is the significance of the Braille script for visually challenged individuals?
Ans: The Braille script, developed by Louis Braille, is significant for visually challenged individuals as it allows them to read through raised dots on thick paper. It provides them with a means to access written information and education.

(vi) What is the difference between Biodegradable waste and Non - Biodegradable waste ?
Ans: The difference between Biodegradable waste and Non - Biodegradable waste are as follows:
Biodegradable waste: 

• Biodegradable waste material rot easily and mix with the soil. 
• leftover food, fruit and vegetable peels, paper and leaves are all Biodegradable waste.

Non - Biodegradable waste –:

• Non - Biodegradable waste material do not rot easily and do not mix with the soil. lt remain in the environment for a long time
• Plastic goods, silver foil, aluminium cans and e-waste are Non - Biodegradable waste.

(vii) What is compost? How is it produced ?
Ans: A compost is a nutrient rich food which is used as manure by farmers. Organic wastes from kitchens and gardens is put in pits or bins. This waste turns into compost.

(viii) What should we do to protect our environment?
Ans: We should produce less waste and disposing waste properly . Each type of waste should be put in the correct garbage bin. Kitchen or organic waste can be collected in compost pits.

(ix) How is Open Dumping different from Landfills?
Ans: Open Dumping – waste is first loaded in trucks. it is then taken far away from the town or city and dumped in the open. lt pollutes the environment. Landfills - Landfills are found in the outskirts of a city. ln this method, deep ditches are dug and waste is dumped in them. When the ditches are full, they are covered with soil.

(x) What is recycling? What are its benefits?
Ans: Recycling is the process of producing a new product from used or waste material. This saves raw materials and also the energy required to produce them. lt also reduces pollution.