Show:
The Earth's Layers
Earthquakes and Volcanoes
Catastrophic Events
Surface Changes
Eras, Periods and Epochs
100
This is made up of nickel and iron
What is the outer core?
100
2 things that can come out of a volcano
What are lava/ volcanic bombs, steam, toxic gases, broken pieces of rocks, and ash (pyroclastic flow)?
100
Mass extinctions during the Cretaceous, Jurassic, and Triassic may have been caused by one of these visitors from the cosmos
What is an astroid/comet?
100
This the supercontinent that existed during the Triassic Period.
What is Pangaea?
100
Giant insects and quick-growing trees were a result of high oxygen levels in this period.
What is the Carboniferous?
200
This is the coolest layer of the earth.
What is the crust?
200
The closest volcano to Terrace is located in this area.
What is the Nass Valley?
200
Mass extinctions in many periods were caused by these processes of the earth that could occur for thousands or millions of years.
What are (Flood Basalt) volcanic eruptions?
200
This is the theory that explains why our continents have changed over time.
What is Continental Drift?
200
All dinosaurs died out at the end of this period.
What is the Cretaceous?
300
The earth's crust is made up several of these
What are plates?
300
This is released when two plates scrap against each other, causing an earthquake
What is energy?
300
This cause of global warming took place when water warmed enough to release a gas once frozen on the seabed floor.
What is (catastrophic) methane release?
300
This directly causes the continents to drift
What is movement of the plates of the earth's crust?
300
This period is known as the Period of the Apes.
What is the Miocene?
400
Convection currents keep matter in this layer of the earth moving
What is the mantle?
400
The three main parts inside a volcano
What are magma chamber, vent, and crater?
400
These chilly events, which happen over and over again on earth, lead to reshaping of the land and some extinctions.
What is an ice age?
400
These are responsible for the movement of the earth's plates
What are convection currents?
400
Only bacteria could survive during this dark, continent-less, toxic era.
What is the Archean?
500
The upper mantle and crust are part of this "rock layer" of the earth.
What is the lithosphere?
500
Two other problems that earthquakes and volcanoes cause.
What are floods, tsunamis, and landslides.
500
Climate change on earth has been caused by these three events:
What are methane released from the ocean/lake floor, dust clouds created by meteors, toxic gas clouds created by repeated volcanic eruptions?
500
These 3 pieces of evidence has been used to support the theory of continental drift
What are similar rock formations, similar fossils, and the puzzle-shapes of the continents?
500
The biggest mass extinction that earth has ever experienced occurred during this period.
What is the Permian?