DUE MONDAY 12/21

JACLYN SALEVSKY


1. What conditions might cause mud to flow?
The conditions that might cause mud to flow is a steep slope and/or wet soil.
2. What conclusion can you draw from the two images?
I concluded from the two images that the steeper the slope, the better chance of a mudflow. I also noticed that even if you have the smallest change in slope, it can still create a mudflow.
3. List at least two ways you could make the mud slide off the 30° slide plane without changing the plane's angle.
One way to create a mudflow off the 30 degree slope is to add more water to the soil. Another way is to make the slope more slippery.
4. What conditions in nature would be represented by the answers you gave for question 3?
More rain with a slippery clay surface that the soil could be still on.
5. List at least two factors that contribute to the formation of mudflows on volcanoes.
A sudden release of water from a nearby glacier, and the quantity of loose debris such as ash.
6. How might forest fires affect an area's potential for experiencing mudflows?
It burns the forests and brush which creates a flat burned surface.
7. Hypothesize about how mudflows could change the topography of an area after a fire.
I hypothesize that it would cover the burned material on the surface and cover it making it seem like the fire never happened.
8. What human activities strip soil of its protective vegetation and increase its vulnerability to mudflows?
Logging removes trees from the landscape and construction.
9. Write a paragraph describing the conditions that cause dangerous mudflows. Include the types of locations where mudslides are most likely to occur.
The conditions that are needed to create a dangerous mudslide are, loose soil, water, a steep slope, and vegetation but not a lot of it. Loose soil so that it doesn't take much for the mudslide to begin, water because it also helps the slide to move faster. A steep slope so that gravity is a big factor when the mudslide begins. Not a lot of vegetation because the roots aren't attached into the ground anymore.

Kind of Mass Movement

Mudslide is a type of mass movement.

Mudslide is a mass of mud and other earthy material that is falling or has fallen down a hillside or other slope. A mudslide is also a rapid movement of a large mass of mud formed from loose soil and water.

JACLYN SALEVSKY

Earthquake Activity

PART ONE Jaclyn Salevsky

1. Zoom in on Alaska, and estimate how many earthquakes have happened there in the past day.
In the past day, there have been around 22 earthquakes at Alaska.

2. Zoom in on California, and estimate how many earthquakes have happened there in the past day.
In the past day, there have been about 2 earthquakes at California.

3.Locate the largest magnitude earthquake in the world in the past week.
The largest magnitude earthquake this past week was 6.0 near the Southern East Pacific Rise.

4. What was the magnitude?
The magnitude was 6.0.

5. Where was it?
Near the Southern East Pacific Rise.


6. Was it a plate boundary? If so, what kind?
By looking at this map with the plate boundaries, you can see that there is a plate boundary right near where the earthquake took place. Therefore it possibly is a divergent boundary.













PART TWO

Use an internet search to find a news story about an earthquake from the past 6 months.

1. Where was the earthquake?
The earthquake was near the California-Mexico border area.

2. What was the magnitude?
The magnitude was 3.8.

3.Was it at a plate boundary? If so, what kind?
It was a plate boundary, it's a convergent boundary.

4.What kind of impact did the earthquake have on the local population?
The kind of impact it had on the local population was nothing at all, there was no injuries or damage reported.