Friday, January 14, 2011

This Week in Science-Class we learned about:

This week in science we learned about earth’s structure and caves.
First we brainstormed about the earth’s structure I wrote down some random notes for instance:
The Earth’s Structure
The Earth has different layers, it has a molten core of magma, it has natural resources, most of it is water etc. Then we watched a Bill Nye video about the earth’s crust and I found out some intriguing questions such as: the earth’s core is mostly made out of liquid iron, the earth has an inner core, an outer core, a mantle and crust, the earth’s inner core temperature is approximately one-thousand-five hundred degrees Celsius and the mantle is a mere twelve-hundred degrees Celsius, the continent of north America is move away from Europe by two inches every year.
Caves
We watched a Bill Nye video about caves I especially was interested about cave-dwelling animals and the so called adapted cave amphibians, fish, bugs and spiders and the cave visitors such as bats birds and snakes. I learned that most caves are eroded limestone that used to be under an ancient sea. Stalagmites and stalactites are form by mineral rich water slowly dripping to form strange formations that look like immense jaws waiting to close on unsuspecting victims.

1 comment:

  1. Well-written post Sven! I especially love the descriptive sentence at the end describing the stalactites and stalagmites. :) Very vivid picture. I also like the way you included images of the two most prominent things you learned this week.

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