Roads which have a smooth top layer of crushed stones or stone chips held together with tar are called metalled roads.
Why have industries not developed in Indian villages?
Answer coming soon…
How are express trains different from passenger trains?
Express trains are fast and stop only at some stations whereas passenger trains are slow and stop at many stations.
How did the invention of the steam engine help us?
Invention of the steam engine led to the development of boats and ships which were used for fishing, transporting goods and passengers, and in wars.
What are the advantages of air transport?
Advantages of air transport are-
1. Planes can carry people, cargo and letters across the world within few hours.
2. Helicopters can go to places that are difficult to reach like, areas hit by floods or landslides. It can also take food and other supplies for soldiers in battlefields and high mountains.
B. TRUE OR FALSE.
The first cars ran on petrol.
Most of India’s village roads are not metalled.
Steam engines were invented to pull trains.
Ships are now mostly used to transport goods.
Hot-air balloons cannot be steered.
False. In the beginning, cars only ran on steam.
True
False. Early steam engines were used to pump water and make things in factories.
