Dear Gelop,

How are you? Did anything special happen on Mars? Please write me back. Here on earth everything is fine. Only a little a little bit boring, because it’s raining al day. Do you know what ‘rain’ is? I’ll explain it to you.

Rain is just water that falls down from the sky; there are three different reasons of how the water comes in the skies.

1. Convectional rainfall Here the water rises because the sun warmed the ground. After that, the ground warms the air above it. The warm air rises until it cools down and then the water vapour condenses and the clouds are formed. The clouds make it rain.

2. Relief rainfallHere the rain has to do with the wind. When the wind meets a mountain, the mountain forces the air to rise. When it rises, it cools down and then the water vapour condenses and clouds are formed. The rain of this type of rainfall always falls on the windward (that is facing the wind) side of the mountain.

3. Frontal rainfallHuge masses of air travel all around the world. When a warm air mass meets a cold one, the warm air slides up over the cold one. When the warm air rises, it cools down and then the water vapour condenses and clouds are formed. The clouds make it rain.

Rain is very important for life on earth. Without rain, plants wouldn’t grow, and we had nothing to eat because a food chain always starts with a plant. So everything would die if there wasn’t rain. How do you guys actually do this on Mars?

Greetings Alex