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.