Earth's Structure

3. The outsider who proposed continental drift.
4. The process of growth or increase, by the gradual accumulation (addition) of new matter.
7. The extremely hot, chemical layer at the center of Earth.
9. Chemical layer made up of rocks and minerals.
10. Seafloor and ocean basin, this crust is more dense.
14. How many chemical layers does Earth have?
16. A mobile, semi-molten (melted), semi-solid physical layer in the upper mantle where the rocks behave like a solid under pressure, but can flow like a thick liquid without breaking. Consistency of Oobleck all of the time.
17. Solid physical layer of Earth's hot center, made mostly of iron and nickel.
18. A measure of how tightly matter is packed in a given volume.
19. Has a liquid and solid metal layer, mostly iron and nickel.
20. The mostly solid, chemical middle layer of Earth, where partially melted rocks flow slowly.
21. The mostly immobile, solid physical layer in the lower mantle, made of rigid rock that flows very slowly due to the high temperature and pressure.

1. A continent that contains most or all of Earth's land, scientists believe there have been several in the past, and there will be more in the future.
2. How many physical layers does Earth have?
5. Liquid physical layer of Earth's hot center, made mostly of iron and nickel.
6. The largest chemical layer by volume.
8. differentiation : The process by which a planet's materials separate into distinct chemical and/or physical layers depending on the density.
9. The (now proven) idea that the continents are always moving.
11. The rocky, outermost chemical layer of Earth.
12. Dry landmasses, this crust is less dense.
13. The most well known because it is the most recent to contain all of Earth's landmasses.
15. A physical layer that includes the crust (upper) and and uppermost, rigid part of the mantle. Where the tectonic plates are.