Final Review (stuff after midterm) Flashcards
What are some possible factors that cause the Cambrian Explosion?
- Earth was warming
- Rising sea levels
- Rising oxygen
- Increased calcium concentrations in the ocean
- Rise of predators?
What were the first animals with eyes?
Trilobites
What are the six periods of the Paleozoic?
Cambrian, Ordovician, Silurian, Carboniferous, Permian
What event occurred at the beginning of the Paleozoic?
The Cambrian Explosion
What event occurred at the end of the Paleozoic?
The Permian-Triassic Extinction
What is the Great Unconformity?
The major hiatus observed worldwide between the Pre-Cambrian and Paleozoic rocks
What sedimentary rock formed during the Cambrian?
Burgess shale
When did the development of skeletons occur?
During the Cambrian Explosion
What are the three periods of the Mesozoic?
Triassic, Jurassic, Cretaceous
What was the biggest event of the Mesozoic?
Pangea broke up
When did the South Atlantic Ocean open?
During the Cretaceous
What is the difference between angiosperms and gymnosperms?
Angiosperms have encased seeds, gymnosperms have exposed seeds
What is the biggest difference between the Saurischian Dinosaur and the Orthnischian Dinosaur?
Saurischian has a lizard hip and the ornithischian has a bird hip
Which type of dinosaur traveled in groups?
Ornithischian Dinosaurs
Which dinosaurs were primarily quadrupeds?
Sauropods
Which dinosaurs were herbivores?
Ornithischian dinosaurs
When did the earliest mammals evolve?
Late Triassic
What are the three periods of the Cenozoic?
Paleogene, Neogene, Quaternary
What causes ice ages?
Changes in Earth’s orbit, the configuration of continents, atmospheric carbon dioxide
What are artiodactyls?
even-toed animals
What are perissodactyls?
odd-toed animals
What animals did the horse evolve from?
Hyracotherium
What did the first elephant evolve from?
a pig-like animal during the Eocene
When was the last megathrust earthquake?
1700
When might be the next megathrust earthquake
2150
What are some hazards of earthquakes?
buildings collapse, glass breaking, tsunamis, broken water pipes, broken gas lines, liquefaction
How often does the San Andreas fault cause an earthquake?
~22 years
