Forms Of Water

Key Notes:

Introduction to Water:

• Water is essential for all living things.
• It is found in different forms on Earth.

Three Forms of Water:

• Solid: Ice and snow are solid forms of water. Water freezes and becomes solid when the temperature is very cold (below 0°C or 32°F).
• Liquid: Water in rivers, lakes, and oceans is in liquid form. It is the most common form of water we use every day for drinking, cooking, and bathing.
• Gas: Water vapor is the gaseous form of water. It is invisible and formed when water is heated and evaporates.

How Water Changes Forms:

• Freezing: When water becomes very cold, it turns into ice (liquid to solid).
• Melting: When ice is heated, it changes back to water (solid to liquid).
• Evaporation: When water is heated, it turns into water vapor (liquid to gas).
• Condensation: When water vapor cools, it turns back into liquid water (gas to liquid).

Examples in Nature:

• Icebergs and glaciers represent water in solid form.
• Rivers, ponds, and rain are examples of liquid water.
• Clouds form when water vapor condenses, showing the gaseous form of water.

Water Cycle:

Water changes forms as part of the water cycle:

• Evaporation → Condensation → Precipitation → Collection.

This cycle helps distribute water across the Earth.

Importance of Water Forms:

• Solid water (ice) helps cool things and stores water in glaciers.
• Liquid water is vital for drinking, farming, and transportation.
• Water vapor is essential for forming clouds and precipitation.

Fun Facts:

• Nearly 70% of Earth’s surface is covered with water.
• Ice is less dense than water, which is why it floats.