when is mud dangerous?

1. What conditions might cause mud to flow?
earthquakes, hurricanes and rain. fine ash from explosive volcanoes can cause destructive mudflows also.

2. What conclusion can you draw from the two images?
well the flatter the surface, the mud will hold, the steeper the surface is, the mud will let go and start a mud slide.

3. List at least two ways you could make the mud slide off the 30° slide plane without changing the plane's angle. add water! then the mud would start to flow little by little, or you could shake the board like an earthquake, then it would start to flow down the board.

4. What conditions in nature would be represented by the answer you gave for question 3? nature would be represented by bad weather and rain also it is represented by earthquakes and volcanoes

5. List at least two factors that contribute to the formation of mudflows on volcanoes. ash from explosive volcanoes and water stored in glaciers that melted from snow.

6. How might forest fires affect an area's potential for experiencing mudflows? The fire removes trees, shrubs, and grass from the soil surface that makes everything turn to ash and mud, all will slide downhill when it starts to rain and cause a lahara.

7. Hypothesize about how mudflows could change the topography of an area after a fire. well it turns all to ash and makes the land bare. so laharas can flow

8. What human activities strip soil of its protective vegetation and increase its vulnerability to mudflows? scientists use bombs and stick them into the ground so they can see the inside of the slope, so i think that that can make it so a mudslide is more vulnerable to slide!

	9. Write a paragraph describing the conditions that cause dangerous mudflows. Include the types of locations where mudslides are most likely to occur. well what things cause a mudflow are earthquakes, rain, water from a glacier on a volcano and hurricanes. mudslides are most likely to occur on mountains, hills and volcanoes all over the world.

mass movement

The movement downslope of rock fragments and soil under the influence of gravity. The material concerned does not take into water or ice, and moves of its own way, but slides are often triggered by increase in water pressure on rocks and soil. A widely used classification of mass movement uses the combination of types of movement falls, topples, slumps, slides, and flows. THIS IS CALLED A MASS WASTING.

1. What are the first 3 types of plate boundaries listed?

Divergent boundaries Convergent boundaries Transform boundaries

2. What does the word divergent mean in regard to plate movement? What forces the plates to move apart at divergent boundaries?

where new crust is generated as the plates pull away from each other.

3. Give an example of a specific mid-ocean ridge where seafloor 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?

4. What does the word convergent mean in regard to plate movement?

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

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?
b. oceanic-oceanic convergence?
c. continental-continental convergence?

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?

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

b. Kuril Trench

c. Phillipine Islands

d. East African Rift Valley

e. Red Sea

f. Peru-Chile Trench

g. Aleutian Islands

Cast and Mold fossil

One form of fossil forms when an organism dies and its body is covered by layers of sediment. As time passes, the organism itself, particularly when composed primarily of softer materials, is eroded and carried away, leaving a negative imprint of its body. This type of fossil is called a mold. A cast fossil forms when a mold fossil is filled with some form of mineral, usually through the seepage of water depositing the minerals within the mold. In time, the mold is filled and the materials deposited harden, creating a replica of the original fossil. This is called a cast fossil.

Trace Fossil.

A type of fossil reflecting the reworking of sediments and hard substrates by organisms, rather than the physical remains of the organism itself. This includes structures such as burrows, trails, impressions, coprolites and borings.

bob

• Bob is born
• Bob loses his first tooth
• Bob is tall enough to ride the roller coaster
• Bob starts middle school
• Bob graduates from high school
• Bob gets his driver’s license
• Bob joins the Marines
• Bob gets married

The youngest rock is 3, cross cutting tells that the rock is younger because it is younger then the one its cutting threw. the next one is 1, it is the 2nd youngest because it is on top of all the other layers. 6 is the 3rd youngest because it is under 1. then 2 would be the 4th youngest because it cuts threw the 4 and 5. then five would be next because it is on top of the 2 and the 4. then 2 would be the oldest because it is on the bottom of all of them.