How Rocks Turn into Soil

It is the breaking down of rocks into fragments.

• Weathering

• Flooding

• Run off

• Erosion

A type of weathering that involves change in the composition of rocks.

• chemical

• mechanical

• both chemical and mechanical

• none of the above

What do you call the process by which humans extract stones from the mountains for construction purpose?

• quarrying

• flattering

• weathering

• digging

What happen to rock when it is exposed to varying temperature?

• expands

• evaporates

• contracts

• sinks

An open-pit mine where rocks can be extracted.

• quarry

• open-field

• reservoir

• landfill

Which of the following activities of man contribute to the breaking down of rocks?

• fishing

• mining

• studying

• sky diving

How do roots of plant break down rocks?

• They heat the rocks.

• They split the rocks apart.

• They leave materials on the rocks.

• They absorbed rock particles

How does temperature breakdown rocks?

• Rocks break when it is cooled.

• Rocks break when it is heated and then cooled.

• Rocks break when it is heated.

• Rocks break when it is not exposed to water.

Some animals like rabbits and moles dig up soil for shelter or to find food. How does this activity contribute to the breaking down of rocks?

• The digging or burrowing of animals breaks the rocks into small pieces.

• The food that these animals bring underground causes the breaking of rocks.

• Small rocks that be exposed to sunlight.

• Animals will enjoy staying in the dug holes and cause the rising of temperature inside.

Water, people, animals wear away bits of rocks. What do you call this process?

• Erosion

• Weathering

• Mountain Building

• Fermenting