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Earth Layer Questions and Answers (Q&A)

The layer of the Earth that is solid is the inner core. It is mostly made up of a solid ball of iron-nickel alloy and other elements with a radius of about 760 miles or 1, 220 kilometers. Though it is a solid layer, its temperature is as hot as the sun’s surface that is approximately 5, 430 °C/9,806 °F or 5,700 K.

The inner core was discovered by Inge Lehmann, a Danish seismologist, when she was studying earthquakes’ seismographs in New Zealand. It was resolved that the outer core is a molten layer when compressional waves can pass through while shear waves cannot pass through the inner layer.

3 Answers

It's 84% exactly

why am i wrong?

Although the core and mantle are about equal in thickness, the core actually forms only15 percentof the Earth's volume, whereas the mantle occupies84 percent. The crust makes up the remaining1 percent.

2 Answers

The answer to this is Mantle which is letter B in the choices. The mantle is located in between the crust of the earth and the outer core. The fact that it is rocky may contribute to its overall mass. This is known to have more mass than the other layers of the earth. The outer layer or the crust is known to be the thinnest layer.

The mantle is known to be very hot so even if people would be able to reach this far, the heat will be too much. There are different minerals that are found in this layer and they may change depending on their location and the pressure that is being experienced by the earth.

2 Answers

In this sentence "dense" means.....

- C. Closely compacted together

1 Answer

The correct answer to this question is D, crust. This outer layer is hard and made of igneous, metamorphic, and sedimentary rocks. The crust is 1% of the Earth's volume. There are two different types of crust. The first is the continental crust, which is thich and under the land.

The second is the oceanic crust, which is thinner and under the ocean. The crust is comprised of 46.6% oxygen, 27.7% silicon, 8.1% aluminum, 5% iron, and the other 12.6% is comprised of various other elements. The material of the crust is a family of sillicates, feldspars, quartz, and oxides.

1 Answer

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