WEEK 2 EARTH SCIENCE

Which of the following represents the correct order of the processes responsible for the formation of sedimentary rocks?

• Erosion, weathering, compaction, cementation, deposition

• Compaction, cementation, deposition, weathering, erosion

• Deposition, cementation, compaction, erosion, weathering

• Weathering, erosion, deposition, compaction, cementation

Stalactites and stalagmites on caves are a popular attraction. These were formed through deposition of calcium carbonate and other minerals. What type of weathering occurred during the process?

• freezing and thawing

• chemical weathering

• mechanical weathering

• thermal and pressure change

Which of the following is NOT an agent of erosion?

• glacier

• wind

• gravity

• rocks

Which of the following is the process by which sediments settle down in a particular area?

• transport

• deposition

• weathering

• deformation

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

• radiogenic heat

• primordial heat

• superheating

• radiant heat from the sun

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

• radiogenic heat

• primordial heat

• superheating

• radiant heat from the sun

What refers to the shaking of the surface of the Earth resulting from a sudden release of energy caused by a convection current?

• earthquake

• volcanic eruption

• storm surge

• hurricane

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

• convection current

• conduction

• insolation

• radiation

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

• magma

• rocks

• sand

• lava

When water or carbon dioxide is added to hot rocks, the melting points of minerals within the rocks decrease. What process is being described?

• flux melting

• heat transfer

• partial melting

• decompression melting