Earth's Structure
The inner core of the Earth is composed of:
Iron and Nickel
There are #______________ types of boundaries that geologists observe!!!
3!
_____________ _____________: Single, fixed column of magma that pierces through plates and produces volcanic eruptions!
Hot-Spot!
Define Archipelago
Famous scientist who once suggested that the Earth's landmasses were once joined together in a single supercontinent.
Alfred Wegener
Periodic table symbols for Iron and Nickel
Fe and Ni
The Earth’s crust is divided into segments called ______________________.
Plates
The ___________________ is a string of underwater volcanoes and earthquake sites around the edges of the Pacific Ocean.
Ring of Fire
______________________a natural volcanic glass formed when silica-rich lava cools very rapidly with minimal crystal growth.
Obsidian
_____________________was a heavily built, pig-to-sheep-sized herbivore that lived from the late Permian to the Early Triassic period!
Lystrasaurus
Name a gem that can be found in the Earth's mantle.
Diamonds, rubies, sapphires, emeralds, topaz.
Earthquakes happen at _______________plate boundaries.
Transform
__________________ is an extremely active volcano in the Hawaiian Islands, and the most active of the five volcanoes that together form the big island of Hawaiʻi.
Kilauea
The ________________ Islands are a chain of more than 300 volcanic islands stretching 1,200 miles westward from the Alaska Peninsula toward Russia!
Aleutian Islands!
___________________is an extinct freshwater reptile which lived approximately 300 million years ago. His fossil remains were found on the eastern coast of South America and western coast of Africa.
Mesosaurus
Define Molten:
Melted rock
At ___________________ boundaries, continents or ocean floors are spreading apart. As new crust forms it pushes the plates on either side of the boundary farther and farther away from each other.
Divergent
What is the difference between magma and lava?
Magma: Molten rock beneath Earth's surface
Lava: Molten rock above Earth's surface
"_______________" Bird also known as the Hawaiian goose, is the official state bird of Hawaiʻi and the rarest goose in the world!
Nene!
The name comes from Greek words meaning "tongue" (glossa) and "fern" (pteris) because the leaves look like tongues. An extinct tropical plant.
Glossopteris
The largest part of the Earth
Mantle
Describe Seafloor Spreading.
New Ocean Crust slowly forms as plate diverge! Lava hardens as quickly as it hits the water!
The Hawaiian Islands were formed by a hot spot punching through the middle of the __________________ Plate.
Pacific
49th State:
50th State:
Alaska
Hawaii
Define Pangea
"all of the Earth"
"all Lands"