1. As you move from the surface of Earth to the inner core, what happens to the temperature? A. It increases. B. It decreases. C. It stays the same D. It increases, then decreases 2. As you move from the surface of Earth to the inner core, what happens to the density of the materials of each layer? A. Density increases B. Density decreases C. Density stays the same D. Density increases, then decreases 3 What prevents the tron and other minimal amount of some elements in the core from melting A. Density B. Pressure C. Temperature D. Vapor
Assessment
Choose the letter of the best answer. Write the letter of your answer on a separate
sheet of paper.
1. As you move from the surface of Earth to the inner core, what happens to the
temperature?
A. It increases.
B. It decreases.
C. It stays the same
D. It increases, then decreases
2. As you move from the surface of Earth to the inner core, what happens to the
density of the materials of each layer?
A. Density increases
B. Density decreases
C. Density stays the same D. Density increases, then decreases
3 What prevents the tron and other minimal amount of some elements in the core from melting
A. Density
B. Pressure
C. Temperature
D. Vapor
4. Why do some isotopes play a minor role in the production of heat in the interior
of the earth?
A Due to its abundance in the core
B. Due to the heat it releases
C. Due to chemical stability
D. Due to its high energy capacity
5. Heat Now from the different layers to the earth. What type of heat transport occurs between the mantle and the core?
A. Conduction
B, Convection
C. Radiation
D. Sublimation
6. Which of the following is an isotope that is present in the core of the earth?
A Uranium - 235
B. Uranium - 253
C. Uranium - 523
D. Uranium - 325
7. Which of the following pertains to the spontaneous breakdown of an atomic nucleus resulting in the release of energy and matter from the nucleus?
A Convection
B. Gravitational pressure
C. Radiation
D. Radioactive decay
8. As you move from the surface of Earth to the inner core, what happens to the
pressure?
A. It increases
B. It decreases
C. It stays the same
D. It increases, then decreases
9. Why is earth considered as a thermal engine?
A. The main source of internal energy is the sun
B. The main source of heat comes from the produced decay of some naturally occurring isotopes from its interior.
C. The moon gives energy to earth and convert it to thermal energy D. The pressure of the materials in the crust causes materials to be molten.
10. Why does Earth's internal heat builds up due to gravitational pressure?
A. Because there is no escape of heat from Earth's surface B. Because the escape of heat from Earth's surface is less than the heat
generated
C. Because the escape of heat from Earth's surface is greater than the heat
generated
D. Because the escape of heat from Earth's surface is equal than the heat
generated
11. How did Earth generate heat on its early stage of formation
A. By radioactive decay
B. By gravitational pressure
C. By absorption of solar energy
D. By collision of the masses of gas and dust
12. Which of the following sentences in incorrect?
A. As someone goes down the center of the earth, the pressure increases, thus, the temperature increases.
B. As someone goes down the center of the earth, the density of the materials increases, thus, the temperature increases
C. Due to radioactive decay in the center of the Earth, the planet is cooling off
D. There are remains of primordial heat of the Earth
13. The heat escaping from the core also makes material move around in different layers of the planet. Which of the following will best describe the given sentence?
A. It is true.
B. It is false.
C. It depends upon the layer of the Earth.
D.It cannot be determined due to the composition of Earth
14. How do radioactive isotopes emit heat energy and contribute to Earth's heats
A By pressure freezing
B. By gravitational pressure
C. By preserving the primordial heat
D. By spontaneous radioactive decay
15. Which of the following is the main source of Earth's internal heat?
A Primordial heat
B. Radioactive elements
C. Gravitational pressure
D. Dense core material
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