Term
| Survivors at the end of the permian. |
|
Definition
| Plants, Animals good at collecting O2, Animals with light calcification. |
|
|
Term
| Victims at the end of he Permian. |
|
Definition
| Marine invertebrates (not good at getting O2), some ancestors of mammals. |
|
|
Term
|
Definition
|
|
Term
|
Definition
1. Each extinction is different and complicated.
2. Mass extinctions typically mean that more than one thing went wrong at more or less the same time
3. The more different things go wrong simultaneously, the worse the extinction.
4. Mass extinctions cause major changes.
5. The role of luck in being pre-adapted to the crisis. |
|
|
Term
| How to calculate estimated time. |
|
Definition
| # or P (after decay)/ #P (before decay) + #D. |
|
|
Term
| Radiometric dating (to determine absolute time of an object) |
|
Definition
| Over time, in a radioactive crystal (such as quartz), some atoms will decay and change to another element that doesn't belong in the crystal. |
|
|
Term
| Other ways to determine absolute time. |
|
Definition
| Growth rings, Seasonal/annual cycles. |
|
|
Term
| What can seasonal cycles tell? |
|
Definition
Winter- Finest muds (still water lets sediments settle)
Fall- Diatoms from leaves.
Summer- Algae
Spring- Diatoms |
|
|
Term
| What can tree rings tell? |
|
Definition
| Mild winters, cold winters, dry summers, wet summers. |
|
|
Term
|
Definition
| Coral, elephant tusks, and dinosaur bones. |
|
|
Term
|
Definition
|
|
Term
| Big Bang theory? What's that? |
|
Definition
| Well, the universe is expanding from a point. It started out hot, then cools rapidly. As it cools, physics and chemistry become possible. |
|
|
Term
| Stars start with gas, what are these gases? |
|
Definition
1. Hydrogen
2. Helium
3. Carbon
4. Neon
5. Oxygen
6. Silica |
|
|
Term
| What happens when a star burns out? |
|
Definition
| IMPLOSION!!!! The star collapses! THEN!!!! The star explodes! The result is called a supernova...how do we know this happens? The only way of making metals that are heavier than Fe is a supernova. It's like a reincarnation. Ooooo!!! A supernova flattens out and reconnects (IT REBIRTHS THE STAR!!!!) HOLY POOP!!! =] |
|
|
Term
|
Definition
Well....
Felsic crust is continental crust and....
Mantle is oceanic crust |
|
|
Term
| What are terms for temperature in the mantle and what do they mean? |
|
Definition
Ultramafic- Very hot
Mafic- Relatively hot
Felsic- Relatively cool |
|
|
Term
| What are Greenstone belts and what are they made of? |
|
Definition
| They are basically like glue for continents and are made of pillow lavas (Chlorite, mica). |
|
|
