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Fun fact about earth's mantle,best duck dog breeders,german shepherd for sale in nc - How to DIY

Category: Dog Trainer Certification Programs | Author: admin 25.02.2015
Answer: Scientists learn about the Earth by studying other planets, earthquakes and volcanoes and even by drilling into the Earth. The Earth is not just one big ball that’s solid throughout, although it might look that way!
The next layer that comes is called the mantle and here’s all the info you need to understand this layer of the Earth.
The mantle is about 2,900km thick and amazingly it makes up about 85% of the Earth’s weight. As we mentioned earlier, the oceanic crust is made of basalt, which is a really thick rock, and this can press into the mantle and then fill with water. The inner core apparently spins at a different speed to the rest of the planet and this causes the Earth’s magnetic field.


The mantle of the earth is solid rock, but amazingly it can be moulded, just like play dough. Well they watch how waves travel through the Earth, called Seismic waves, which are caused from earthquakes or eruptions.
Well they move and crash into each other and this causes earthquakes and volcanic eruptions. The continents were made from lighter blocks that float on the mantle like massive big icebergs. The effect of this magnetic field spreads way beyond the Earth and goes off far into space.
The top layer, which is what we stand on is the crust, next comes the mantle and finally the core.


The Earth was formed 4.5 billion years ago, and when this happened, all the heavy materials sunk to the middle and this became the inner core.
It actually forms a barrier that helps protect the Earth from the Sun’s destructive solar winds. The inside of the Earth is still unbelievably hot because of nuclear reactions that are still going on.
Scientists can’t exactly get in a rocket and head right to the middle of the Earth, or the core, so it’s difficult to know exactly what’s there.



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