Earth Science
Storyboard Tekst
- Good day, everyone! My name is Maurine, My father and I are touring in this village because I have an observation project.
- That's correct! My daughter's project revolves entirely around chemical weathering. She needs to pay attention to the rocks that are visible in the area.
- I've noticed that the rocks around here are starting to rust. But why though?
- The father intended to bring her daughter to this village because her daughter is working on an Earth Science project.
- That's because it's already been chemically weathered. This type of rock is already covered in rust, which will eventually degrade and yield new materials.
- Rainwater reacts with mineral grains in rocks to form new minerals (clays) and soluble salts, which causes chemical weathering. These reactions are more common when the water is slightly acidic.
- Oh my goodness! It's already raining, Father! Will it have a greater impact on the rocks? I also forgot to bring my umbrella!
- Don't worry, daughter, everything will be fine. To answer your question, yes, rain will have a significant impact on the rocks.
- Rust is a chemical compound that is formed when oxygen and iron react in the presence of water. It typically takes hundreds of years for rock to rust.
- Everyone, everything comes to an end here, and I hope you learned something about Chemical Weathering!
- Yes, everyone, thank you! We're going home now because it's raining!
- Rust weakens and helps break up rock as it expands. Chemical weathering degrades rocks by forming new minerals that are stable on Earth's surface.
- Carbon dioxide (CO2) combines with water as raindrops fall through the atmosphere because it is raining now. This produces carbonic acid, a weak acid. Carbonic acid is found in nature and is used to dissolve rock.
- The father and daughter have returned home. Maurine's teacher received her observation project on chemical weathering. Thank you for joining us in our learning!
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