Special Feature — Part 12
How is soil formed?
Quiz Time! What Sort of Soil Is This?
Take a quiz on the types of soil you've learned about.
If you answer correctly, you'll be able to see its microscopic structure in a picture taken by an electron microscope.
See how many questions you can get right!
![](/image/global/science-edu/micro/content12/what_02.png)
Click the numbers on the map to take the quiz!
Which one ispeat?
If you answer correctly,
you'll get to see a close-up photo of the soil.
It's formed from plants, so you can
see plant fragments in it.
Which one isandosol?
If you answer correctly,
you'll get to see a close-up photo of the soil.
It's a soft, fluffy and dark type of soil.
Which one isAkadama?
If you answer correctly,
you'll get to see a close-up photo of the soil.
It's redder than other soils.
Which one isKanuma?
If you answer correctly,
you'll get to see a close-up photo of the soil.
It has a light color and is similar to pumice stone.
Which one isFujisuna?
If you answer correctly,
you'll get to see a close-up photo of the soil.
It has lots of holes formed when magma cooled and solidified.
Which one isvolcanic ash?
If you answer correctly,
you'll get to see a close-up photo of the soil.
It's made of very fine particles that float through the air along with volcanic smoke.
Which one isShirasu?
If you answer correctly,
you'll get to see a close-up photo of the soil.
The name "Shirasu" literally means white-colored sand in Japanese.
![とじる](/image/global/science-edu/micro/content12/common_10.png)