Properties of Water and Water Cycle

Front

What is surface tension?

Back

Surface tension is the property of water that allows it to resist external force due to the cohesive nature of its molecules. It enables small objects, like a water strider, to 'skate' on the surface of water.

Front

What is adhesion in the context of water?

Back

Adhesion is the attraction between water molecules and other substances. It allows water to stick to surfaces, which is important in processes like capillary action.

Front

What is capillary action?

Back

Capillary action is the ability of water to move through narrow spaces against gravity, due to the combination of adhesion and cohesion.

Front

What is cohesion in water?

Back

Cohesion is the attraction between water molecules themselves, which allows water to form droplets and contributes to surface tension.

Front

Where does the energy for the water cycle come from?

Back

The energy needed for the water cycle comes from the Sun, which heats water in oceans, lakes, and rivers, causing evaporation.

Front

What is the water cycle?

Back

The water cycle is the continuous process by which water evaporates from the Earth's surface, condenses in the atmosphere, and precipitates back to the surface.

Front

How does water move from the roots to the leaves of plants?

Back

Water moves from the roots to the leaves of plants primarily through capillary action, which pulls water molecules upward.

Front

What role does the Sun play in the water cycle?

Back

The Sun provides the energy necessary for evaporation, which is the first step in the water cycle.

Front

What is evaporation?

Back

Evaporation is the process by which water changes from a liquid to a gas, usually due to heat from the Sun.

Front

What is condensation?

Back

Condensation is the process by which water vapor cools and changes back into liquid water, forming clouds.