1. List all of the geologic periods in order from oldest to current. (Cambrian to Quaternary)

Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian, Jurassic, Triassic, Quaternary



2. Since the extra credit question is so hard, come up with a mnemonic to help you remember it.
Can
Oscar
Send
Danny
My
Purple
Plum
Just
Too
Quickly

1. How can scientists tell the age of a tree by looking at the rings? Explain what that means.

The number of dark rings represents the age in years of the trees. The dark layers used to be the outside bark of the tree.

2. How/why would this be useful?

If you know the age of the tree then you can tell the age approxamate age of everything around the tree.

3. Is this an example of relative or absolute dating?

This is an example of absolute aging because you can tell the exact age of the tree.

4. Provide a picture or a tree ring sample.

The order of the rock layers is . . . . .
D, A, E, B, C

D goes first because when the layers were horizontal layer D was on the bottom.
A is next because it is right above D.
E is after A because it is vertical so you know that it is an igneous intrusion and it stops right before layer B so you know that it is in between A and B.
B is the next layer because it is an nonconformity that is on top of the other layers.
C is the last layer. It is also an igneous intrusion and you know that it is the youngest because it cuts through layer B.

I think that volcanoes can cause more damage and are more dangerous than earthquakes. Volcanoes cause lava to destroy and desolve everything it touches. The ashes from the eruption can catch things on fire and cause more distruction.

1.) How deep is the deepest mine in the world?
One of the deepest mines in the world is 3.6 kilometers deep.

2.) How deep would you have to dig to reach the mantle?
You would have to dig 65 kilometers to get to the mantle.

3.) Let's pretend that you and your friends tried to dig a hole in your backyard to find a shortcut to China. The thing is, you guys had special suits that could withstand extreme temperatures, so you would not die. If you were somehow able to reach the mantle, what would it look like? What kinds of things would you see? How about the outer core? Inner core? What would it look like as you approached the surface (the crust) on the other side?
As you were digging through the mantle the rock would be so hot it would be melted. All you would see is melted rock. When you get to the core it would get more dense the farther you went . It would start out still melted but by the time you got to the inner core it would be completely solid. once you reach the center and start heading back the other way it would start getting more melted again. The rock as you get to the mantle would be extremly hot and molten again. Then as you get to the crust it would be solid but not hot like the inner core.

I think I deserve at least a high B on my blog posts. I think I deserve this grade because I have completed all of my posts and they are all a good length.

1.) The two types of igneous rocks are intrusive and extrusive. Intrusive rocks form when magma cools beneath Earth's surface. Some examples are granite and pigmatite. Extrusive rocks form when lava cools and hardens on the surface. Some examples are andesite and pumice.

2.) The two main types of metamorphic rock are foliated and non foliated. Foliated rocks appear in layers or bands. Some examples are gneiss and slate. Non foliated rocks do not form in layers. Some examples are marble and quartzite.

3.) The two main types of sedimentary rocks are classic sedimentary rocks and chemical sedimentary rocks. Classic are formed from mechanical weathering debris such as breccia and sandstone. Chemical sedimentary rocks form when dissolved materials precipitate from solution. Some examples are rock salt and limestone.