Earth and Its Changes Quiz

According to chemical components, how many layers do Earth have?

• 1 layer

• 3 layers

• 5 layers

• 7 layers

Which of the following is not the cause of changes on the surface of Earth?

• Sedimentation

• Transportation

• Erosion

• Weathering

What is the cause of stalagmite and stalactite?

• Geothermal energy

• Lava

• Acid rain

• Volcanic eruption

What is SIMA?

Which of the following statement about humus is correct?

• It is formed from weathering rocks.

• It is formed from animal waste products stored underground.

• It is formed from decomposition of dead plants and animals.

• It is formed from deposition of washed away rocks.

What is the outermost layer of Earth?

• Mantle

• Crust

• Core

Why the inner core is composed of solid iron and nickel?

Look at the picture and describe each soil horizon.