How are canyon walls formed?

How are canyons formed?

• Glaciers moving down mountain
• Wind blows
• Water seeping into cracks
• Flowing rivers erode the walls

Rocks breaking into pieces is due to

• Deposition
• Erosion
• Water
  
• Water freezing and thawing (weathering)

In this image, where did the sediments come from to form this delta?

• The highest point
• The lowest point
• The mud under the grassThe mud under the grass
  
• It was already there

What forces change the earths surface?

• Rain, ice, wind
• lightening, thunder, wind
• glaciers, water, wind
• thunder, glaciers, water

This lighthouse on the coast has been moving closer and closer to the water's edge.  What most likely occurred that caused the ocean to get closer?

• volcano eruptions burned the land
• waves eroding the land
• humans walking on the land
• a tsunami

What landform does a glacier create?

• Sand dune
• Pedestal Rock
• Island
• U-Shaped valley

Wind erosion (represented here by blowing sand), creates which landform?

• Mountain range
• Sand dune
• Delta
• Cav

What natural disaster (rapid change) impacts coastal cities the most?

• earthquakes
• hurricanes
• mudslides
• floods, creating deltas

Weathering has helped create this pedestal rock.  What force most likely caused the weathering and erosion?

• ice
• water
• wind

What changes occur to a canyons after many  years of flowing water?

• They get deeper
• They fill up with blowing sand
• A glacier melts and it floods
• It remains unchanged