Show:
Seismic Waves
Plate Boundaries
Volcanic material
Types of volcanoes
Layers of the Earth
100
What device is used to record seismic waves?
Seismograph
100
What is formed at a divergent boundary between two continental boundaries?
Rift valley.
100
What is pyroclastic material?
Solid or mostly solid material that comes out of volcanic eruptions.
100
Which is the smallest volcano?
Cinder cone volcanoes
100
What are the two types of crust?
Oceanic and continental
200
What are the two types of seismic waves?
Surface waves and body waves.
200
What is the subduction zone in a convergent boundary?
Area between where the plate subducts and where it melts.
200
What is the smallest sized pyroclastic material?
Ash and fine dust.
200
Which volcano has the most explosive eruptions.
Composite cone volcanoes.
200
What is Earth's core mostly made up of?
Iron- nickel alloy
300
What is the order from fastest to slowest of seismic waves?
1. P-wave 2. S-wave 3. Surface waves
300
What is produced at a convergent boundary between two oceanic plates?
Volcanic Island Arc
300
What are the difference between bombs and blocks?
Bombs are semi-molten and blocks are completely solid.
300
Why are composite cone volcanoes called stratovolcanoes?
Everytime they erupt they add a new layer of material.
300
Why is Earth's inner core solid?
So much heat and pressure causes it to become a solid.
400
What is used to measure the amplitude of seismic waves?
Richter scale
400
Which type of plate boundary neither creates or destroy lithosphere?
Transform fault boundary.
400
What is the difference between pahoehoe and aa lava?
Pahoehoe is smoother and less viscous. Aa is rough and jagged and more viscous.
400
Why are shield volcanoes the least violent?
The magma just runs out of the volcano because the magma has a very low viscosity.
400
List the five layers of Earth based on physical Properties. (Outside to center)
1. Lithosphere 2. Asthenosphere 3. Lower mantle 4. Outer Core 5. Inner core
500
Which way do P-waves and S-waves travel?
P-waves push and pull in the direction they travel. S-waves do up and down in the direction they travel.
500
Describe the three type of plate boundaries.
Divergent boundaries are where plates move apart. Convergent boundaries are where plates come together and one plate is subducted under another. Transform fault boundaries are when plates move past each other.
500
What are the two main gases found in lava?
Water Vapor and Carbon dioxide
500
How many times can each type of volcano erupt?
Shield volcanoes are mostly always flowing out lava. Cinder volcanoes erupt on two times. Composite cone volcanoes erupt multiple times.
500
What is Moho discontinuity and what causes it?
Moho discontinuity is where the crust stops and the mantles starts. Caused when waves go through a different substance they bend causing a separation.