What is the significance of freshwater for living organisms?

Freshwater is essential for people, animals, birds, and plants to live, drink, and grow food.

Fill in the blank: The process by which water vapor cools to form clouds is called ___ .

Condensation

Explain the water cycle and its stages.

The water cycle has three stages.

• Evaporation turns water into vapor.

• Condensation forms clouds from vapor.

• Precipitation is rain, snow, or hail.

True or False: Groundwater is only found in lakes and rivers.

False. Groundwater is found underground, filling spaces between soil and rocks.

What are the main types of water found on Earth?

The main types of water are saltwater found in oceans and freshwater found in rivers, lakes, and groundwater.

Riddle: I am always moving in a big circle; I can fall as rain or snow. What am I?

Water in the water cycle.

List three ways to help recharge groundwater.

Plant more trees, build soak pits and ponds, and avoid covering large areas with cement.

Fill in the blank: Surface water includes rivers, lakes, and ___ .

Ponds

Describe the role of the Sun in the water cycle.

The Sun heats water from oceans, rivers, and lakes, causing it to evaporate into water vapor.

What are tributaries and their significance in river systems?

Tributaries are smaller rivers that join a larger river, contributing to the river basin and increasing water flow.

True or False: The Luni River in Rajasthan flows directly into the Arabian Sea.

False. The Luni River ends in marshy lands of the Rann of Kutch in Gujarat.

Explain the difference between rooted floating plants and free-floating plants.

Rooted floating plants have roots fixed in the soil underwater, while free-floating plants float freely on the water surface without roots.

What are the three forms in which water exists?

Water exists in three forms: liquid (like rain), solid (like ice), and gas (like water vapor).

Fill in the blank: Water vapour cools and forms clouds, which later produce ___ .

Rain or snow

Water exists in three forms: Liquid, Solid, and Gas. Fill in the blank: Water vapor is an example of ___ water.

Gas