Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
The largest division on the geologic time scale? |
Era |
|
|
Which part of geologic time lasted the longest? |
Prcambrian |
|
|
How are the units of geological time divided? |
Eons, Eras, Periods, Epochs |
|
|
Which Era began with early invertebrates progressed to reptiles and ended with a mass extinction? |
Paleozoic |
|
|
What is the Mesozoic Era known for? |
Dinosaurs |
|
|
During what time did mammals and birds appear? |
Mesozoic |
|
|
During which Era did trilobites live? |
Paleozoic |
|
|
What is the first period of geologic time? |
Cambrian |
|
|
What time period did mammals appear? |
Mesozoic |
|
|
Changes in climate have caused what in Earth's history? |
Glaciations or Ice Ages |
|
|
What possibly caused the extinction of dinosaurs? |
A comet or asteriod |
|
|
This division of geologic time had tropical climates and warm, shallow seas. |
Paleozoic |
|
|
In what part of geologic time do humans live? |
Cenozoic Era, Quarternary Period, Holocene Epoch |
|
|
Geologic time is divided into units based on types of... |
Organisms |
