NCERT MCQ Solutions for Class 5 EVS Our Wondrous World Chapter 1 Water The Essence of Life

Ice is the solid form of water. Water exists in three forms: solid (ice), liquid (water), and gas (steam). Smoke, Soil and paper are not forms of water.

Ocean water contains a high amount of salt, making it unsuitable for drinking or farming. Most of the Earth’s water is salty and cannot be used directly.

Rivers provide freshwater which is used for drinking, farming, and daily activities. Oceans and seas are salty, whereas river water supports life and human use.

The Godavari river flows eastward and drains into the Bay of Bengal. It is the second longest river in India after the Ganga.

When water boils, it turns into steam, which is the gaseous form of water. This is part of the water cycle and happens during evaporation.

The water cycle shows how water moves through evaporation, condensation, and precipitation. It keeps water moving between the Earth and the sky.

The Narmada is one of the few Indian rivers that flows westward and drains into the Arabian Sea. Most major rivers in India flow eastward.

The Sun’s heat turns liquid water into vapour through the process of evaporation. This is the first step of the water cycle.

The waxy coating makes the leaf waterproof, protecting the plant by keeping too much water from soaking into the leaf.

Fins help fish swim smoothly in water. Other animals like frogs and herons use legs or feet, not fins, to move.

Rivers usually begin in the mountains where melting snow or rainfall gives rise to streams that flow downhill, forming rivers.

Tributaries are smaller rivers or streams that flow into a larger river, adding to its volume and strength.

Open areas like green lawns allow rainwater to seep into the ground, recharging the groundwater. Cemented surfaces prevent this.

Water lilies have hollow stems and wide leaves that help them float on water, while their roots remain in the pond bed.

When steam cools down, it condenses into water droplets. This is condensation, the reverse of evaporation.

A pond heron uses its long, pointed beak to catch fish from shallow water while standing still.

Water flows downhill due to gravity. This is why rivers flow from mountains to lower lands and finally into seas.

The Godavari River is the second longest river in India after the Ganga, traveling 1,465 kilometers before joining the Bay of Bengal.

Hydrilla is a submerged aquatic plant that grows completely under the water and helps in oxygenating it.

When water is placed on a wax crayon-colored surface, it beads up and doesn’t soak, showing that wax repels water.

Ice is the solid form of water. At room temperature, it absorbs heat and melts into liquid water, demonstrating a change of state from solid to liquid.

When water vapour in the air cools, it condenses into droplets that form clouds. These droplets fall as rain, completing the water cycle.

Fish use gills to take in oxygen from water. Gills help them breathe underwater, unlike frogs or turtles, which breathe through lungs or skin.

Water hyacinth is a free-floating plant that grows rapidly on the surface of water, sometimes covering entire ponds and blocking sunlight.

The Luni River ends in the marshy lands of the Rann of Kutch and does not drain into a sea, unlike most Indian rivers.

When water vapour rises and cools in the atmosphere, it condenses into tiny droplets, forming clouds. This step leads to rain.

Cities have many cement roads and buildings that prevent water from seeping into the soil. This stops groundwater from getting recharged naturally.

Tributaries are small rivers or streams that join and feed larger rivers, increasing their volume and flow strength.

Turtles have webbed feet that help them swim and a soft shell that protects them. These features help them survive in freshwater bodies.

Water is essential for drinking, growing food, bathing, and survival of plants and animals. That’s why rivers and water sources are called the lifelines of life.