Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
Evolution of Transport: Humans transitioned from walking and using animals (horses, bullocks) to inventing the wheel, which led to modern vehicles.
The Wheel: The invention of the wheel is considered the most important discovery in the history of transport, allowing for the creation of carts and chariots.
Land Transport: Vehicles that move on roads (cars, buses, cycles) or tracks (trains). Trains are used for long distances and carry many people at once.
Water Transport: The oldest mode of transport for crossing water bodies. It includes boats, steamers, and large ships.
Air Transport: The fastest mode of transport. Aeroplanes and helicopters help us travel across countries and oceans in a very short time.
Fuel and Energy: Modern vehicles require energy to move. Common fuels include , , and (Compressed Natural Gas). Some modern transport runs on .
Space Travel: To travel beyond Earth, humans use and spacecrafts.
📐Formulae
💡Examples
Problem 1:
If a train covers a distance of in , what is its speed?
Solution:
Explanation:
Speed is calculated by dividing the total distance traveled by the time taken to travel that distance.
Problem 2:
Meeta traveled by bus and by walking. Find the total distance she traveled.
Solution:
Explanation:
To find the total distance of a journey involving multiple modes of transport, we add the individual distances together.
Problem 3:
Which fuel is often preferred in big cities to reduce pollution: or ?
Solution:
Explanation:
(Compressed Natural Gas) is a cleaner fuel compared to and because it produces less smoke and harmful gases.