Jaclyn Salevsky White B3
It took 40 milliliters of water to cause mass movement for both sand and the potting soil.
Sand:
40 divided by 100= 40 multiply by 100= 40%
Potting Soil:
40 divided by 100= 40 multiply by 100= 40%
It shows that the change for the sand and the potting soil was 0%. Which means that both were not more prone to slide.
Wednesday, January 6, 2010
Sunday, December 20, 2009
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.
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.
Wednesday, December 16, 2009
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
Tuesday, December 8, 2009
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.
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.
Thursday, October 22, 2009
Questions - Plate Boundaries Homework
1. What are the first 3 types of plate boundaries listed?
The first 3 types of plate boundaries that are listed are divergent boundaries (where new crust is generated as the plates pull away from each other) convergent boundaries (where crust is destroyed as one plate pulls away from each other) and transform boundaries (where crust is neither produced nor destroyed as the plates slide horizontally past each other)
2. What does the word divergent mean in regard to plate movement? What forces the plates to move apart at divergent boundaries?
The word divergent in regards to the plate movement is that the plates move apart, and a new crust forms. What forces the plates to move apart is when magma pushes up from the mantle.
3. Give an example of a specific mid-ocean ridge where sea-floor spreading and divergent boundaries occur. What country sits directly on top of this ridge? What are the red triangles that are shown on the map of this country?
The mid-ocean Atlantic ridge is a sea-floor where it spreads and divergent boundaries occur. The country that sits on top of the ridge is Iceland. The red triangles that are on the map of Iceland are the volcanos in Iceland.
4. What does the word convergent mean in regard to plate movement?
The word convergent means in regards to plate movement is that its called a very slow “collision” by some, and “that takes place between plates depends on the kind of lithosphere involved”.
5. Find the diagrams shown on the website for each of the following kinds of plate boundaries. Label and post the three diagrams on your blog.
a. Oceanic-continental convergence
b. Oceanic-oceanic convergence
c. Continental-continental convergence
ON AN EARLIER POST^^
6. When one plate gets pushed below another plate it is called subduction. What geologic features form on Earth’s surface directly above the subduction zone in the case of:
a. oceanic-continental convergence? a deep sea trench, and a volcanic arc
b. oceanic-oceanic convergence? deep sea trench and an island arc
c. continental-continental convergence? high mountain range
7 .What is a transform boundary? What geological disturbance is caused along transform boundaries? Where in North America is there an example of this type of plate boundary?
Transform boundaries is a zone between two plates sliding horizontally past one another. The geologic disturbance that is caused along the transform boundaries is shallow earthquakes. There is a type of this plate boundary found in California, San Andreas fault zone.
8. Using the Internet and a focused search, identify the type of plate interaction that caused the following features: Specify what kind of boundary, and what kinds of plates are interacting there.
The first 3 types of plate boundaries that are listed are divergent boundaries (where new crust is generated as the plates pull away from each other) convergent boundaries (where crust is destroyed as one plate pulls away from each other) and transform boundaries (where crust is neither produced nor destroyed as the plates slide horizontally past each other)
2. What does the word divergent mean in regard to plate movement? What forces the plates to move apart at divergent boundaries?
The word divergent in regards to the plate movement is that the plates move apart, and a new crust forms. What forces the plates to move apart is when magma pushes up from the mantle.
3. Give an example of a specific mid-ocean ridge where sea-floor spreading and divergent boundaries occur. What country sits directly on top of this ridge? What are the red triangles that are shown on the map of this country?
The mid-ocean Atlantic ridge is a sea-floor where it spreads and divergent boundaries occur. The country that sits on top of the ridge is Iceland. The red triangles that are on the map of Iceland are the volcanos in Iceland.
4. What does the word convergent mean in regard to plate movement?
The word convergent means in regards to plate movement is that its called a very slow “collision” by some, and “that takes place between plates depends on the kind of lithosphere involved”.
5. Find the diagrams shown on the website for each of the following kinds of plate boundaries. Label and post the three diagrams on your blog.
a. Oceanic-continental convergence
b. Oceanic-oceanic convergence
c. Continental-continental convergence
ON AN EARLIER POST^^
6. When one plate gets pushed below another plate it is called subduction. What geologic features form on Earth’s surface directly above the subduction zone in the case of:
a. oceanic-continental convergence? a deep sea trench, and a volcanic arc
b. oceanic-oceanic convergence? deep sea trench and an island arc
c. continental-continental convergence? high mountain range
7 .What is a transform boundary? What geological disturbance is caused along transform boundaries? Where in North America is there an example of this type of plate boundary?
Transform boundaries is a zone between two plates sliding horizontally past one another. The geologic disturbance that is caused along the transform boundaries is shallow earthquakes. There is a type of this plate boundary found in California, San Andreas fault zone.
8. Using the Internet and a focused search, identify the type of plate interaction that caused the following features: Specify what kind of boundary, and what kinds of plates are interacting there.
a .Mid-Atlantic Ridge- divergent tectonic plate boundary and the type of plates interacting is oceanic-oceanic
b. Kuril Trench- The kind of boundary is a convergent boundary. It is an oceanic trench, which was formed as a result of subduction. The plates that are interacting are oceanic-continental.
c. Phillipine Islands- The kind of boundary is a convergent boundary, and the plates are oceanic-oceanic.
d. East African Rift Valley- The kind of boundary is a divergent boundary, and the plates are continental-continental.
e. Red Sea- The kind of boundary is divergent, the plates are oceanic-oceanic.
f. Peru-Chile Trench- The kind of boundary is convergent, the kind of plates are oceanic-continental
g. Aleutian Islands- The kind of boundary is an convergent, and the kind of plates are oceanic-oceanic
Thursday, October 15, 2009
Understanding Plate Motions Question 5
5 Find the diagrams shown on the website for each of the following kinds of plate boundaries. Label and post the three diagrams on your blog.
a. Oceanic-continental convergence
b. Oceanic-oceanic convergence
c. Continental-continental convergence
Oceanic-continental convergence
Oceanic-oceanic convergence
Continental-continental convergence
a. Oceanic-continental convergence
b. Oceanic-oceanic convergence
c. Continental-continental convergence
Oceanic-continental convergence
Oceanic-oceanic convergence
Continental-continental convergence
Monday, October 12, 2009
Geologic Timeline: Follow-up Questions
1. I think that in order to have had multi-cellular things on the earth, there would have had to be a single organism first. Which would mean you would have to go through a long process to produce one organism, but I think that somehow it copied itself to make others the same. I think that not all of them came out the same because some had to come out different because not everything looks the same.
2. I think the most important Eon for the earth, in terms of the development was Proterozoic eon. It was important because one of the developments was the change to an oxygen rich atmosphere. Before, the atmosphere was horrible, and could not hold life on earth. Also, life started to develop by the multi-cellular forms. Another important thing that happened was the ice age during this eon, but at the end of the ice age, the evolution of the earth accelerated.
3. Humans are not really important in the entire history of the Earth until we are created in the Phanerozoic Eon. I think that the cellular organisms, climate, and the atmosphere played a big rule in the history of the Earth. I think this because humans weren't here when the Earth was made. The Earth was made by tiny rocks floating in space that crashed together and formed as one big rock without human help.
JACLYN SALEVSKY WHITE B3
10/12/09
2. I think the most important Eon for the earth, in terms of the development was Proterozoic eon. It was important because one of the developments was the change to an oxygen rich atmosphere. Before, the atmosphere was horrible, and could not hold life on earth. Also, life started to develop by the multi-cellular forms. Another important thing that happened was the ice age during this eon, but at the end of the ice age, the evolution of the earth accelerated.
3. Humans are not really important in the entire history of the Earth until we are created in the Phanerozoic Eon. I think that the cellular organisms, climate, and the atmosphere played a big rule in the history of the Earth. I think this because humans weren't here when the Earth was made. The Earth was made by tiny rocks floating in space that crashed together and formed as one big rock without human help.
JACLYN SALEVSKY WHITE B3
10/12/09
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