Sediments
Earth Layers
Plate Tectonics
Volcanoes
Sea Floor Features
100
Minerals that crystallize directly from seawater are examples of
hydrogenous sediment
100
The core is made-up of what two elements?
iron and nickel
100
What is Pangaea?
the supercontinent that existed millions of years ago
100
The Ring of Fire refers to the volcanoes that are
Located around the borders of the Pacific Ocean and surrounding continents
100
Seamount is similiar to...
a small mountain or volcano
200
What are the types of sediments in the ocean?
lithogenous, biogenous, hydrogenous and cosmogenous
200
What is the thinnest layer of the earth’s composition?
Crust
200
A place where two plates slip past each other, moving in opposite directions, is known as a
transform boundary
200
The Ring of Fire is created because plates push against each other. What type of plate interaction is that called?
Convergent
200
The gradually sloping part of a continent that extends under the ocean is the...
continental shelf
300
Ocean sediments originating in space are called
cosmogenous sediments
300
Where does sea-floor spreading take place?
Mid-Oceanic Ridges
300
What is the largest tectonic plate?
the Pacific Plate
300
What is a hot spot?
A hot spot occurs when magma breaks through the thinner parts of Earth Crust
300
The Mariana __________ is the deepest known place on Earth
Trench
400
Which sediment type, found in the deep ocean, is composed of the shells/skeletons of dead organisms?
Biogenous
400
The thickest layer of the earth is the
Mantle
400
A collision between two pieces of continental crust at a converging boundary produces a
mountain range
400
A sleeping volcano is called what?
dormant
400
Which best represents the order of seafloor features as you move from the shoreline to the deep ocean?
Continental shelf – continental slope – continental rise – mid-ocean ridge
500
Tektites are examples of which type of sediment?
cosmogenous
500
The order of the earth’s compositional layers from most dense to least dense are
Inner Core, Outer Core, Mantle and Crust
500
The place where two plates come together is known as a
convergent boundary
500
A volcano that is erupting or has shown signs that it may erupt in the future is called
Active
500
What is the difference between a volcanic island & a seamount?
A volcanic island rises above the water & a seamount does not