Earth's Layers
What part of an avocado represents the crust, mantle, and core?
Skin = crust
green avocado part = mantle
seed = core
Why do tectonic plates move? Explain why and what layer causes it to move.
Convection Currents in the Asthenosphere
Describe how arrows would point if mountains are being formed.
point towards each other ONLY
Crust, Mantle, Outer Core, Inner Core
Describe convergent boundaries and what they form
move towards each other, form mountains and volcanoes, trenches too
What layer is the asthenosphere, the soft layer on which the tectonic plates move? (give a number 1st, 2nd, 3rd, 4th, or 5th)
The second layer
Which of the following events is NOT explained by plate tectonics? SELECT TWO
Hurricanes, Earthquakes, Tornadoes, Volcanoes
Hurricanes and Tornadoes. These have to do with weather
Two continental plates move towards each other. What geological formation is being formed. KEYWORD CONTINENTAL = LAND
Mountains are formed
Lithosphere, Asthenosphere, Mesosphere, Outer Core, and Inner Core makes what key word? what does this key word represent: the mechanical or compositional layers?
LAMOI, mechanical layers
Describe divergent boundaries and what they form
move away from each other, form mid-ocean ridges and seafloor spreading
What helps scientists identify the layers of the Earth?
Studying Earthquake data
A tectonic plate is...
A. A continent or an ocean
B. The outermost compositional layer of Earth
C. A block of the lithosphere that floats around on top of the asthenosphere
D. The one, large solid piece making up Earth’s outer layer.
C. A block of the lithosphere that floats around on top of the asthenosphere
A continental plate is COLLIDING with an OCEANIC plate. What geological formation is being formed?
VOLCANIC Mountain Ranges.
What does the Pacific Plate not have?
Continents = Land
describe transform boundaries and what they form
form fault lines and massive earthquakes
What is the order of Earth's MECHANICAL layers?
LAMOI = Lithosphere, Asthenosphere, Mesosphere, Outer Core, Inner Core
Earthquakes and volcanoes occur:
A. randomly across the Earth’s surface.
B. along the tectonic plate boundaries
C. only along the edges of continents.
D. only in the middle of the ocean floor.
B. Along the tectonic plate boundaries
Describe the motion of two tectonic plates that are forming mountains. Include the type of crust (continental, oceanic, or continental - oceanic)
Two continental plates moving toward each other
These are the elements on solid Earth: O, Si, Fe, Al
All elements are found on Earth except:
A. Iron
B. Nitrogen
C. Oxygen
D. Silicon
B. Nitrogen
Which density would represent the Earth's core
X = 5.7 g/cm3
Y = 3.0 g/cm3
Z = 13.0 g/cm3
Z = 13.0 g/cm3
Describe the compositional layers of the Earth. Need a description FOR EACH LAYER.
Crust: Outermost layer of the Earth
Mantle: Between Crust and Core
Core: Earth's densest layer
Which tectonic plate has NO CONTINENTS
Pacific Plate
Describe the motion of transform boundaries AND what geological events they cause?
NEED TO ANSWER BOTH
Transform boundaries are 2 plates that slide past each other. They cause fault lines and earthquakes to occur. A good example of this is San Andreas Fault in California.
Oxygen 46%, Silicon 28%, Aluminum 8%, Iron 6%, Other Elements, 12%
Which TWO are correct?
a. The crust is made of equal amounts of all elements
b. iron and aluminum make 14%
c. iron and aluminum make the most
d. oxygen and silicon make the most
b. iron and aluminum make 14%, d. oxygen and silicon make the most.
Describe the movement of Divergent, Convergent, and Transform boundaries.
Divergent - plates separate
Transform - plates slide past each other
Convergent - plates move towards each other