The heat __________ from the crust down to the inner core due to several reasons. Which of the following words will best complete the thought of the given statement?

Each layer of the earth has its own distinct features, composition, properties and characteristics. Which among the layers of the earth has the highest temperature

Different elements with varying properties comprises the layers of the earth. Which layer of the earth has the highest amount of molten state iron?

Why do you think Earth is considered as a thermal engine?

What do you think will happened to the amount of heat from the outermost layer of the earth down to its core? 

Which of the following pertains to the process by whichgasses and dust of cloud were attracted by gravitational energy 4.6 billionyears ago?

Direct observation is not possible to know all the details about the interior of the earth due to its changing nature of internal composition and tremendous heat that come from its inner most layer. Which of the following will best describe the given sentence?

Which among the layers of the earth has the greatest pressure which contributes to the production of the tremendous internal heat?

There are several sources that contribute to the internal heat of the earth. Which of the following is NOT a major process that contributed to Earth’s internal heat?

 How did the Earth generate heat on its early stage of formation?

What process exist as heat is transferred from one plate to another along plate boundaries? 

 How do radioactive isotopes emit heat energy and contribute to Earth’s internal heat?

How do naturally occurring isotopes play a vital role in the production of earth’s internal heat?

What happened to the pressure inside the Earth as you go deeper?

Why does Earth’s internal heat builds up due to gravitational pressure?

What happens to the temperature as you move from the surface of Earth to its inner most layer?

As you move from the surface of Earth to the inner core, what happens to the density of the materials of each layer? 

What prevents the iron and other minimal amount of some elements in the core from melting?

How do naturally occurring isotopes play a vital role in the production of earth’s internal heat?

Heat flows from the different layers to the earth. What type of heat transport occurs between the mantle and the core?  

Which of the following is an isotope that is present in the core of the earth which contributes to immense heat in its interior?

 Which of the following terms pertains to the spontaneous breakdown of an atomic nucleus which results to the release of energy and matter from the nucleus?

What happens to the amount of pressure as you move from the outermost layer of Earth to its inner most layer?  

Why do you think Earth is considered as a thermal engine?

Why does Earth’s internal heat builds up due to gravitational pressure?

How did the Earth generate heat on its early stage of formation?

Which of the following sentences about the internal heat of the earth is INCORRECT?

The heat that flows from the inner most layer makes materials move in the different layers of the Earth. Which of the following best describe the given sentence?

How do radioactive isotopes emit heat energy and contribute to Earth’s internal heat?

Which of the following is the main source of Earth’s internal heat?

Which of the following best describes weathering?

How does gravity contribute to weathering?

Which of the following is NOT an example of physical weathering?

What happens to pieces of rock as they are transported by a river?

In hydration, water is an active agent of chemical weathering. What happens when water loosely combines with the minerals of the rock?

 What are the two things that affect the rate of weathering?

 Which of the following best describes chemical weathering?

Weak organic acids are produced by the action of the growing roots of lichens. These acids react with some minerals in rocks resulting in the decomposition of rocks. How will you classify this process?

Which of the following conditions promotes slow chemical weathering?

Which type of rocks tends to weather more rapidly through hydrolysis process?

Which is an example of oxidation?

Which of these statements is NOT true about mechanical weathering?

Which of the following activities has resulted in an increased rate of chemical weathering through acidification?

I. The production of SO2 and NO in the atmosphere that combine with rain to form acids.

II. The release of too much carbon dioxide in the air that turn rain into weak acid.

III. The disintegration of rocks during construction and mining

IV. The growth of the plant roots on the rock crack.

Which is NOT included in the group?

In which of the following climates will chemical weathering be most rapid?

Which of these statements are TRUE about mechanical weathering?

I.       breaks rock material into smaller pieces

II.     changes the chemical composition of rocks

III.   moss growing on the wall fence creates crack on the walls

IV.   beach rock gets hot in daytime and cools in the evening thus creating fracture on the rock

 Which of the following activities has resulted in an increased rate of chemical weathering through acidification?

Which is NOT included in the group?

In which of the following climates will chemical weathering be most rapid?

Which of the following DO NOT describe weathering?

I.       The process by which rocks are broken during severe weather

II.     The process by which rocks are formed by heat and pressure

III.   The mechanical or chemical process by which rocks are broken down

IV.   The process by which rocks are chemically strengthened due to exposure to heat and pressure

How does gravity contribute to weathering?

Which of the following is an example of biological weathering?

What happens to pieces of rock as they are transported by a river?

In hydration, water is an active agent of chemical weathering. What happens when water loosely combines with the minerals of the rock?

Which type of rocks tends to weather more rapidly through the hydrolysis process?

Which is an example of oxidation?

What are the two things that affect the rate of weathering?

Which of the following best describes chemical weathering?

Weak organic acids are produced by the action of the growing root of lichens. These acids react with some minerals in rocks resulting in the decomposition of rocks. How will you classify this process?

Which of the following conditions promotes slow chemical weathering?