Weathering, Erosion, Deposition

Alec saw footage of a landslide on the news. He saw rocks falling from the side of a mountain, with some of them smashing into each other and breaking apart. Select two of the processes Alec witnessed.

• sedimentation

• cementing

• weathering

• compacting

• erosion

Based on the diagram, structure X is

• a delta that is changing due to sediment deposits from ocean currents.

• an island that is changing due to the movement of plate boundaries.

• a delta that is changing due to sediment deposits from a river.

• an island that is changing due to increasing volcanic lava flow.

Select three human activities that increase soil erosion.

• clearing land for crops

• overgrazing by farm animals

• terracing the land on hillsides

• building roads through fields

• building fences around land

Which of the following will increase the rate of runoff?

• drilling a well into an aquifer

• replacing a forest with a parking lot

• polluting a river or a stream

• increasing infiltration

In the Mississippi Delta, you will find areas on its bank full of soil, rocks, and other debris from along the path of the Mississippi River. Which process is MOST likely responsible for creating these areas of sediment and debris?

• weathering

• erosion

• deposition

• human impact

Which type of weathering is occurring in the following scenario: Acid rain reacts with limestone buildings and statues causing the mineral composition to change.

• electrical

• mechanical

• physical

• chemical

Which type of weathering is occurring in the following scenario: rocks that contain iron can undergo oxidation when exposed to oxygen forming rust?

• chemical

• mechanical

• physical

• electrical

Which best describes the processes in the graphics?

• Graphic X shows sediment being moved through erosion, and graphic Y shows rocks being broken down through deposition.

• Graphic X shows rocks being broken down through weathering, and graphic Y shows sediment being moved through erosion.

• Graphic X shows rocks being broken down through deposition, and graphic Y shows sediment being moved through weathering.

• Graphic X shows sediment being moved through weathering, and graphic Y shows rocks being broken down through sedimentation.

The picture shows a rock formation. What most likely caused this rock formation?

• wind erosion over many years

• erosion by waves over many years

• the rock was chipped away by animals

• high temperatures that melted the rock

This mountain top is covered with trees. A forestry company wants to remove the trees for lumber. Which will most likely happen to the rocks on the mountain if the trees are removed?

• Wind and rain will begin to erode the rocks and the mountain will flatten over time.

• New trees will grow back very quickly and the mountain rocks will not be changed.

• The mountain will quickly become much smaller without the protection of the trees.

• The mountain will grow as additional sedimentary rocks are formed.