Forces That Changes Earth’s Surface I

This theory describes that the solid part of the Earth or lithosphere is composed of different plates and they began to move a long time ago.

• Continental Drift Theory

• Plate Tectonic Theory

• Seafloor Spreading Theory

• Sundaland Theory

Which of the following statements is True about Plates?

I. Earth surface is continuously changing.

II. If the mantle moves, the crust also moves that result or lead to to become a Fault that could be deeper, longer or wider.

III. Gravitational force build up, lower, or wear away the surface of the Earth.

• I and II

• I and III

• II and III

• I, II, and III

Answer explanation

There are forces that build up, lower, or wear away the surface of Earth.

These forces can either be Tectonic Force or Gradational Force.

Tectonic forces cause various movements in Earth.

Gradational forces or Erosional forces cause the removal of some of Earth’ surface by different natural agents such as wind and water.

This layer of the Earth consist of solid and liquid part. When this layer increases heat level, pressure will build up causing the magma to rise up resulting a volcanic eruption or may lead to an earthquake.

• Crust

• Mantle

• Core

• Surface

The friction buildup that causes this type of movement, which mostly involves grinding plates, can result in an earthquake.

• Separation movement of the continents

• Bumping movement of the continents

• Grinding movement of the continents

• Cessation movement

Which of the following statements is Correct?

I. Magma is an extremely hot liquid and semi-liquid rocks located under Earth's surface.

II. Much of the planet's mantle consists of magma.

III. When heat is increased within the mantle, pressure will build up that may raise the magma out of the crater of a volcano.

• I

• II

• III

• I, II, and III

It is the place where the earthquake originates and it tries to reach the surface.

It measures the strength and how much damage the earthquake cause on the surface.

The magnitude of an earthquake is measured by:

• Mercalli Scale

• Richter Scle

• Rossi-Forel Scale

• Mercalli, Richter, and Rossi-Forel Scales

It is an instrument that detects the occurrence of earthquakes.

• Seismologist

• Seismogram

• Seismic wave recorder

• Seismograph

Which of the following statements is True?

I. A shallow focus has a longer distance causing more energy.

II. A shallow focus has a shorter distance causing more energy.

III. A deep focus has a shorter distance causing less energy.

IV. A deep focus has a longer distance causing less energy.

• I and II

• III and IV

• I and III

• II and IV