Homework for 12/18

1. What conditions might cause mud to flow?
A place with soil, water and a lot of movement.

2. What conclusion can you draw from the two images?
The piece of wood at 40 degrees is a lot easier to slide down because its a steeper slope

3. List at least two ways you could make the mud slide off the 30° slide plane without changing the plane's angle.
1- Add more water
2- Add vibration

4. What conditions in nature would be represented by the answers you gave for question 3?
Rain or Earthquakes

5. List at least two factors that contribute to the formation of mudflows on volcanoes.
1- The melting of snow caps
2- The gathering dust and ash from the eruption.

6. How might forest fires affect an area's potential for experiencing mudflows?
Because the ground is littered with debris from the fire and if mixed with water can turn into a mudflow with debris.

7. Hypothesize about how mudflows could change the topography of an area after a fire.
It could clear all of the debris and make it look like a fire was never there because everything would be buried.

8. What human activities strip soil of its protective vegetation and increase its vulnerability to mudflows?
Development of land and some kinds of farming.

9. Write a paragraph describing the conditions that cause dangerous mudflows. Include the types of locations where mudslides are most likely to occur.

Environments that have dangerous mudflows usually have a source of water, soil or debris, movement, a steep slope, and loose soil. All of those ingredients can combine to form a mudflow which is destructive and can ruin anything in its path. Volcanoes are a hot spot for where mudflows can happen because when the eruption occurs, the lava melts the ice caps and the ash combines with the water and forms a mud-like substance and goes down the mountain at highspeeds gathering debris along the way.

Mass Movement (Rock Fall)

Rock Fall is a type of mass movement. Rock fall occurs when blocks of rock shed from a cliff face and collect at the base.