Std.7 sst ch.1 question answer

2 . If the Himalayas did not exist     If the Himalayas did not exist, India would be very different. The cold winds from Central Asia would enter India freely, making the climate much colder and drier. Many rivers like the Ganga, Yamuna, and Brahmaputra might not exist because these rivers originate from the Himalayan glaciers. Without the Himalayas, there would be less rainfall, fewer forests, and farming would become difficult in many regions. The northern plains might even look like deserts. The Himalayas also protect India from strong winds and help in bringing monsoon rains, so life in India would be much harder without them. 3. Why is India called a ‘mini-continent’? India is called a “mini-continent” because it has great diversity in physical features, climate, culture, languages, and natural resources, just like a continent. It has mountains in the north, deserts in the west, plains in the center, plateaus in the south, and coastal regions on both sides. Different par...
Post a Comment

After Fishermen Deaths, 11-Year-Olds from TN Designed Zero-Cost Life Jackets Using Plastic Bottles

 

After Fishermen Deaths, 11-Year-Olds from TN Designed Zero-Cost Life Jackets Using Plastic Bottles

Disturbed that fishermen die at sea every day because they cannot afford safety gear, these boys from a government school in Tamil Nadu designed a cost-efficient life jacket out of waste plastic bottles. The project won the ‘Boldest Idea’ award at the ‘I CAN Awards 2014’ organised by Design for Change.

Eleven-year-old Rishikesh spent a lot of his time playing on the beaches of Ramanathpuram and the neighbouring fishing villages. While there, he’d often heard murmured stories of fishermen tragically drowning at sea. Disturbed by these stories, and knowing that most fishermen cannot afford safety gear, he started thinking.

With his Class VI friends – Praveen, Naveenkumar, Karthi, and Guhan, all of whom hail from agricultural families – from the Panchayat Union Middle School in Muthuramalingapuram, rural Tamil Nadu, Rishikesh went about designing a product that could help fishermen stay afloat, at zero cost. “The idea of designing a life-saving jacket came to me when I saw some plastic bottles floating in the sea,” he told EducationWorld.

The students envisioned putting such discarded plastic waste, which spoils the soil and water bodies, to better use.

Studying the physics of floatation by observing empty plastic bottles in water…

The students began researching on the physics of floatation by experimenting with empty plastic bottles. Stitching together about two dozen such bottles, their first prototype seemed to work pretty well. As Rishikesh knew swimming, he tried out the jacket himself first in a lake, to see if it effectively allowed him to float.

Comments

Post a Comment

Popular posts from this blog

Magic fingers art

Image
  Magic Fingers Art This is an amazing work like creativity with animated artistic easy drawing... If you have so much time to waste then do it and earn money. If your arts are awesome then do like this Don't waste your time just enjoy your artistic work with joy 😊 😊 😊 😊 
Read more

Humayun's Tomb

Image
Humayun's Tomb Humayun's Tomb is the tomb of the   Mughal Emperor   Humayun   in Delhi, India. The tomb was commissioned by Humayun's first wife and chief consort, Empress   Bega Begum   (also known as Haji Begum),   in 1558, and designed by Mirak Mirza Ghiyas and his son, Sayyid Muhammad,  Persian  architects chosen by her.   It was the first garden-tomb on the   Indian subcontinent ,   and is located in   Nizamuddin East , Delhi, India, close to the   Dina-panah   Citadel, also known as   Purana Qila   (Old Fort), that Humayun found in 1533. It was also the first structure to use red sandstone at such a scale.   The tomb was declared a   UNESCO World Heritage Site   in 1993,   and since then has undergone extensive restoration work, which is complete.   Besides the main tomb enclosure of Humayun, several smaller monuments dot the pathway leading up to it, from the main entrance in ...
Read more

Haunted place around the world

Image
  1. Château de Brissac, Maine-et-Loire, France Château de Brissac is a castle located in the commune of Brissac-Quincé, the department of Maine-et-Loire, France. The castle is recorded to have been built during the 11  th  century, and has a long and interesting history. Like many castles around the world, the Château de Brissac is said to possess its own resident ghost. This is the ‘la Dame Verte’ or Green Lady, who is said to be the ghost of an unfaithful wife murdered by her husband during the 15  th  century. Castle’s History Dubbed as the ‘tallest castle in France’, the Château de Brissac is said to have originally built as a castle by the Counts of Anjou during the 11  th  century. During the 15  th  century, the château was rebuilt as a fort-like structure by one of Charles VII’s ministers. During the French Wars of Religion, which broke out during the 16  th  century, the château was made into his possession by Henry of Nav...
Read more