Objective
By the end of this lesson, you will be able to understand the logic behind the water cycle and explain how water moves through different stages.
Materials and Prep
- A whiteboard or a piece of paper
- A marker or pencil
- A glass of water
Prior knowledge required: Basic understanding of what water is and its different forms (solid, liquid, gas).
Activities
- Start by discussing the different forms of water (solid, liquid, gas) and have the student give examples of each.
- Draw a simple diagram of the water cycle on the whiteboard or paper, including evaporation, condensation, and precipitation.
- Explain each stage of the water cycle using the diagram and ask the student to explain it back to you in their own words.
- Take the glass of water and place it in a sunny spot. Observe and discuss how the water slowly evaporates and forms water vapor.
- Cover the glass with a plate or plastic wrap and wait for a few minutes. Observe and discuss how water droplets start to form on the surface, representing condensation.
- Remove the cover and wait for a few more minutes. Observe and discuss how the water droplets fall back into the glass, representing precipitation.
- Repeat steps 4-6 a few times to reinforce the concept of the water cycle.
Third Grade Talking Points
- "Water is everywhere around us, and it can exist in different forms like solid, liquid, and gas."
- "The water cycle is a continuous process that involves the movement of water from the Earth's surface to the atmosphere and back."
- "When the sun heats up water bodies like oceans, lakes, and rivers, it causes the water to turn into water vapor, which is the gas form of water. This process is called evaporation."
- "When the water vapor rises into the cooler atmosphere, it cools down and turns back into tiny water droplets, forming clouds. This process is called condensation."
- "When the water droplets in the clouds become too heavy, they fall back to the Earth as rain, snow, sleet, or hail. This process is called precipitation."
- "The water cycle keeps repeating itself, ensuring that water is constantly moving and being recycled on Earth."