CBSE Class 5 EVS — Flashcards for Quick Revision

A: Most of Earth's surface is covered with water, but the majority is salty ocean water. Freshwater is only a tiny amount - if all Earth's water was in a glass, freshwater would be just one teaspoon!

A: 1. Liquid - rain, river water, drinking water 2. Solid - ice, snow, hail 3. Vapour/Gas - steam, water vapour in air

A: The water cycle is the constant circular movement of water in nature. Water evaporates from oceans and rivers due to sun's heat, forms clouds, then falls as rain, snow or hail, and flows back to water

A: A tributary is a small stream or river that joins a larger river. When tributaries join a main river, they make it wider and stronger. For example, many small streams join the Godavari river as tribut

A: A perennial river flows all year round, like the Godavari. A seasonal river flows only during the rainy season when it receives water from rain. Perennial rivers are more reliable for providing water

A: The Godavari begins at Trimbakeshwar in the Western Ghats of Maharashtra and ends by joining the Bay of Bengal. It travels 1,465 kilometres, making it the second longest river in India after the Ganga

A: Microbes are tiny living things that are so small you need a microscope to see them. They are everywhere - in soil, water, air, plants, animals, and inside us. Some microbes are helpful (like those in

A: Microbes need three things to grow: 1) Moisture (water), 2) Air (oxygen), 3) Right temperature. If we remove any one of these, we can stop microbes from spoiling food.

A: Drying food in the sun removes moisture (water) from the food. Without moisture, microbes cannot grow and spoil the food. This is why dried chillies, dried fish, and other sun-dried foods last for mon