Science Quiz: Rocks and Soil

What is the process called when rocks are broken down into smaller pieces?

• Erosion

• Weathering

• Flooding

• Runoff

Which type of weathering involves a change in the composition of rocks allowing them to break down into pieces?

• Mechanical

• Erosion

• Deposition

• Chemical

What is the process by which humans extract stones or rocks from a quarry by digging or blasting?

• Plowing

• Quarrying

• Flattering

• Drilling

What will happen to a rock when it is exposed to high temperature?

• It will expand

• It will sink

• It will contract

• It will evaporate

Which of these factors can bring about mechanical weathering?

• Wind

• Oxidation

• Carbonation

• Acids

How can water make rocks break?

• The strong waves that hit the rocks can break them

• The abundance of coral reefs breaks the rock

• The color of water breaks the rock

• It makes the rock to contract

What is mechanical weathering?

• A process where rocks are physically broken into smaller pieces

• A process where rocks are worn away from acid in plant roots

• A process where rocks are broken down by oxidation

• A process where rocks are chemically changed

What is chemical weathering?

• It is the breaking down of rocks due to a change in their chemical composition

• It is a process where rocks are physically broken into smaller pieces because water, wind, temperature, and living organisms

• It is the transport of rock particles elsewhere

• It is the change in appearance of rocks

How can temperature make the rocks break?

• It grows between the cracks of rocks

• The repeated expansion and contraction of rocks due to changes in temperature results in weathering

• The acid attacks and dissolves stones made of calcite

• It gives iron-rich rocks a rusty-colored surface which weakens the rock

The diagram shows a natural process that weathers rock. Which statement best explains why this process results in weathering?

• Water acts as a solute

• Water hitting the rocks make them break

• Water dissolves most types of rocks

• Water contracts when it freezes