PUFF THE WEATHER CLOUD SAYS:Let me check the sky… ☁️
🎬 How a Greenhouse Traps Heat tap Next!
Sunlight comes in
Sunlight shines right through the clear glass, like light through a window. ☀️
🎛️ Change the Weather! play
Tap a weather and watch what happens inside the greenhouse.
💧 It Rains Inside!
Plants and wet soil give off water you can't see, called water vapor.
When the vapor touches the cool glass, it turns back into tiny drops. That's called condensation.
The drops slide down the glass and water the soil again. It's a mini water cycle in a box! 💧
🌍 Earth Has a Greenhouse Too
Earth has a greenhouse too! The air around our planet works like a giant, invisible blanket. It lets sunlight in and keeps some of the heat from escaping.
Without this blanket, Earth would be freezing cold, about 0°F (−18°C) on average. Brrr! 🥶
But when cars, factories and power plants add extra gases to the air, the blanket gets thicker and Earth slowly warms up. That can bring more heat waves and stronger storms. 🌡️
The good news: people all over the world are working on it, and you can help too! Walk or bike when you can, turn off lights you're not using, and plant trees and flowers. 🌳
🧪 Try It at Home with a grown-up
Jar greenhouse
Put two thermometers in a sunny spot. Cover one with a big clear jar. Wait 30 minutes. Which one is warmer? Why?
Bag garden
Put a few bean seeds on a wet paper towel inside a zip bag. Tape it to a sunny window. Watch the seeds sprout, and look for "rain" inside the bag!
A car is a greenhouse too!
On a sunny day, a parked car gets very hot inside, even when it's not hot outside, because the windows trap the heat. That's why kids and pets must never be left in a car. Always stay with a grown-up!
🤩 Wow Facts
The Netherlands is a small country, but it grows tons of tomatoes, peppers and cucumbers in giant greenhouses.
Scientists in Antarctica have grown fresh lettuce and cucumbers in a special greenhouse, with no sunlight and freezing cold outside!
Astronauts have grown lettuce on the International Space Station, and even ate it!