Question

use the reading selection to answer the following questions:

1. about how old is the earth?
2. how are observations and inferences related?
3. what are two important properties of seismic waves that help us study the earth beyond?
4. why is earth’s magnetic field important?
5. fill in the circle below to tell what observation lead to the inference.

observation
inference
the earth gets denser as it gets deeper
earth’s outer core is a liquid
earths has a magnetic field
earths outer core is liquid iron
name the 4 layers of earth.
the crust, the mantle, outer core, inner core
which layer of earth is the hottest?
which layer of earth is the least dense?
which two layers of earth act like a liquid?
what three evidences did wegner use to hypothesize that the

Explanation:

For the question "Name the 4 layers of earth", the four layers of the Earth are the Crust, the Mantle, the Outer Core, and the Inner Core. This is a fundamental concept in Earth science (a subfield of Natural Science, specifically Geography or Geology - related). The crust is the outermost solid layer, the mantle is a thick layer of semi - molten rock, the outer core is liquid (composed mainly of iron and nickel), and the inner core is solid (also mainly iron and nickel).

Answer:

The four layers of the Earth are the Crust, the Mantle, the Outer Core, and the Inner Core.