Earth's Layers
Plate Tectonics
Plate Tectonics 2
Rock Cycle
Rock Cycle 2
Miscellaneous
100
Which of the following is the densest of Earth's layers?
* Outer core
* Inner core
* Crust
Inner core
100
What type of boundary exists when two plates move towards each other and push against each other?
* Convergent
* Divergent
* Transform
Convergent
100
What type of boundary exists when two plates slide past each other?
* Convergent
* Divergent
* Transform
Transform
100
What kind of rock forms around a volcano?
* Igneous
* Metamorphic
* Sedimentary
Igneous
100
What kind of rock is made from several different types of sediment cemented and compacted together?
Sedimentary
100
true or false, metamorphic rock can be formed from sedimentary AND igneous?
True
200
Which layer of the Earth is considered molten, where convection occurs?
* The outer core
* The inner core
* The mantle
The mantle
200
Describe one place on earths plates where volcanoes form.
along
* convergent continental plates
* where convergent continental and oceanic plates meet and oceanic subducts
* divergent continental plates move apart
* where the crust is thin
* along thin places in the Earth's plates
200
A large mountain range (like the Himalayas in India) will form where
* convergent continental plates meet
* convergent continental and oceanic plates meet and oceanic subducts
* divergent continental plates move apart
convergent continental plates meet
200
What kind of rock forms under mountains?
* Igneous
* Metamorphic
* Sedimentary
Metamorphic
200
What is the most common type of rock
igneous
200
True or false, sedimentary rocks can be formed from metamorphic AND igneous?
True
300
True or false:
The inner core is less dense and thinner than the mantle
False
300
What causes the movement of tectonic plates?
Convection currents in the mantle push and pull on the plates of the crust
300
Which ocean is growing larger each year?
the Atlantic
300
How can you tell if an igneous rock was intrusive or extrusice?
The size of the crystals
300
Shale is an example of
sedimentary rock
300
what is the mid Atlantic ridge?
an undersea mountain range of volcanoes where the Atlantic plats are diverging
400
List the layers of the earth from topmost to deepest.
Crust, mantle, outer core, inner core
400
Before the theory of plate tectonics, what observations / evidence suggested that the continents once fit together?
Matching fossils and rocks on either side of the Atlantic.
The shape of the continents
400
Where is the "Ring of Fire?"
All along the "Pacific Rim" where the oceanic plate is being subducted.
400
Sedimentary rocks that formed from dissolved minerals that hardened and glued other rocks together is called
cementation / conglomerate
400
What processes occur at 6 to turn sedimentary rock into igneous rock?
* Sedimentary rock is pushed underground where it melts and then cools to become igneous rock
* Sedimentary rock undergoes intense heat and pressure to become igneous rock
* Sedimentary rock is compacted and cemented into igneous rock
Sedimentary rock is pushed underground where it melts and then cools to become igneous rock
400
how do earthquakes form?
when plates either converge or transform (slide past).
500
Daily Double
Describe how one of the following technologies helped us establish and support the theory of plate tectonics:
sonar
drilling core samples
satellites and GPS systems
500
Which type of plate is more dense, oceanic or continental?
oceanic
500
If one tectonic plate is moving Southeast while another is moving Northwest, what type of boundary is present between them?
Divergent
500
How are metamorphic rocks formed?
parent rocks are moved under heat and pressure for a long time.
500
How are rivers and other bodies of water involved in the rock cycle?
Rivers transfer rock sediment and deposit them where they build up to form sedimentary rock.
500
what is a tsunami?
a wave cause by an undersea earthquake.
600
Which description matches the asthenosphere?
* The rocky outer topmost layer of the Earth
* The plastic top layer of the Earth's mantle
* The liquid inner layer of the Earth
The gooey, plastic/liquid like, top layer of the Earth's mantle
600
What is the name of the rocky portion of Earth's layers that is made up of the uppermost mantle and the crust?
Lithosphere
600
How did the technology of Magnetometers help us determine that the Atlantic ocean was spreading?
It identified the switching of the direction of the magnetic fields in the rocks along the mid Atlantic ridge.
600
What is one noticeably difference in metamorphic rock from it's parent rock?
crystal banding, increased hardness, change of shape and colour.
600
Who was Alfred Wegener
The person who first proposed the theory of Continental Drift.
600
What are seismic waves?
waves that travel through the plates and are caused by earthquakes