GEOLOGIC PROCESSES INSIDE EARTH

Thorium-232: Decays into _________ through alpha decay.

• Radium-228

• Thorium-234

• Nitrogen-14

• Argon-40

These are substances that evaporate easily and can exist in gaseous form in the surface of Earth.

• Tholeiites

• Magmatism

• Volatiles

• Organic compounds

Temperature increases with depth, which is called ____________. This increase will obviously induce melting.

Decrease in pressure causes ______________. As pressure is decreased, melting temperatures of materials decrease.

It suggests that rocks formed from the cooling and solidification of molten magma (igneous processes).

•As magma rises to the crust, it can displace the host or country rock to form structures called _____.

Earth's internal heat is produced by _________ and _________

is a process where an astronomical object, like a planet or star, shrinks under its own gravity.

Unstable elements undergo ___________ to attain a more stable form.

Around ___ of the solar energy that reaches the surface of Earth is reflected back to space.