EARTH'S INTERNAL HEAT and MAGMATISM

1. 1. Why does radioactive decay play a very important role in earth’s internal heat?

• A. Spontaneous nuclear disintegration of radioactive elements produced thermal energy.

• B. Radioactive element can be found anywhere in the planet.

• C. When radioactive element decays, it produces heat.

• D. All of the above

2. 2. What is produced by the radioactive decay of isotopes in the mantle and crust?

• A. heat from the sun

• B. primordial heat

• C. radiogenic heat

• D. superheating

3.This refers to the heat left over from the formation of the Earth?

• A. heat from the sun

• B. primordial heat

• C. radiogenic heat

• D. superheating

4.Which of the following stores magma and located in a region just beneath the crust all the way to the core?

• A. crust

• B. inner core

• C. mantle

• D. outer core

5.What heat transfer of fluid in the Earth’s interior results to the movement of rocky mantle up to the surface?

• A. Conduction

• B. Convection

• C. Insolation

• D. Radiation

6.What kind of process by which heat energy is transmitted through collisions between neighboring atoms or molecules?

• A. Conduction

• B. Convection

• C. Insolation

• D. Radiation

7.What kind of heat transfer occurs mostly on the Earth’s surface?

• A. Conduction

• B. Convection

• C. Insolation

• D. Radiation

8.What term should be used to describe a semi-liquid hot molten rock located beneath the Earth?

• A. Lava

• B. Magma

• C. Rocks

• D. Sand

9.What do you call the semi-liquid hot molten rocks found on the surface of earth once the volcano erupts?

• A. Lava

• B. Magma

• C. Rocks

• D. Sand

10.What process occurs if there are formation and movement of magma under the earth’s crust?

• A. Decompression melting

• B. Flux melting

• C. Heat transfer

• D. Partial melting