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Give an example of sustainable yield.
If you cut down a tree to use for energy, shelter or products; you will replant it. If you eat a chicken you will raise another to replace it.
Explain sustainable yield.
the replacement of renewable resources at the same rate at which they are consumed.
What is an inexhaustible resource?
A resource that is not provided by  Earth, such as the sun's radiation to create solar energy or wind energy.
Which label is the magma chamber?
D
Which label is the conduit?
C
Which label is the vent?
B
Which label is the caldera?
A
Which label is the crater?
E
The more natural resources a country has determines the contry's wealth and power. T or F
T
Are resources found everywhere on Earth, evenly?
No, some places have more or less resources.
Is phosphorus a renewalbe or nonrenewable resource? Why?
renewable; it cycles in the spheres
Is carbon a renewalbe or nonrenewable resource? Why?
renewable; it cycles inthe spheres
Is aluminum a renewalbe or nonrenewable resource? Why?
nonrenewable; finite amount in Earth
Why is Bamboo one of Earth's most versitile renewable resource?
It can be used for food, shelter, & clothing. It does not need to be replanted, or use of pesticides/fertilizers.It's a grass, does not need to be replanted.
What is the difference between a renewable resource and a nonrenewable resource?
renewable resource is replacable in a short amount of time; nonrenewable takes a long amount of time to replace.
Give examples of nonrenewable resouces.
coal, and oil
Give an example of a resource that can b replaced at a sustainable rate?
any type of organism (plant/animal)
What is a conduit?
tubelike structure in a volcano
What is a fissure?
long cracks in Earth's crust
What is viscosity?
internal resistance to flow
What is pyroclastic flow?
flowing cloud of tephra and lava mixed with hot, suffocating gases
___ refer to all processes associated with the discharge of magma, hot water, and steam.
volcanism
In the most explosive type sof eruptions, lava accumulates to form a ___
composite volcano
Lava travels through a conduit to erupt through a __ at the top of the volcano.
vent
The volcano Izalco in El Salvador is a small, steep-sided volcano. What conclusions can be drawn about the characteristics of the lava that formed this volcano?
Cinder-cone volanco- steep-sided & small; explosive eruptions
Why is pyroclastic flow dangerous?
It is a rapidly moving cloud of tephra mixed with hot, suffocating gases.
Which is the smaller tephra? blocks or ash
ash
Which is the larger tephra? blocks or ash
blocks
How is tephra classified?
by size
What is tephra?
Erupted material from an volcano
Compare and contrast magma and lava.
Lava is on the surface of theEarth & lower temp.; Magma is from inside the Earth and higher temp.
The volcanoes in the Circum-Pacific Belt form as a result of magma rising upward into faults and fractures that form as tectonic plates diverge.T or F
F
How does the amount of silica afffect lava's viscocity?
higher silica= higher viscosity/ lower silica = lower viscosity
What type of boundary are the volcanoes at the Circum-Pacific and the Mediterian Belt?
Convergent
cinder-cone volcanoes have steep ---- and are ------ volcanoes
sides; smallest
Relate how the amount of gas in magma is related to its explosivity?
higher dissolved gas creates more pressure, thereby a more explosive eruptionosive
An increase in temperature increases a magma’s viscosity. T or F
T
An increase in silica increases the viscosity of a magma. T or F
F
Relate how the viscosity of magma is related to its explosivity?
higher viscosity= more explosive; lower viscocity = less explosive
Wet minerals and rocks melt at lower temperatures than do dry minerals and rocks. T or F
T
Presure decreases with depth below Earth's surface. T or F
F
Hot spots form at plate boundaries. T or F
F, volcanoes that form far from plate boundaries
Why types of volcanoes form where plates move together
convergent volcanism
Why types of volcanoes form where plates move apart
divergent volcanism
Describe the formation of a caldera.
when the top or side of a volcano collapses into the magma chamber
Most volcanoes form at plate boundaries. T or F
true
Which type of volcano is the most explosive?
composite volcanoes
What is a vent?
It is where lava erupts through an opening in Earth's crust
What forms when a magma chamber collapses?
caldera
What is the order of volcanoes, from the oldest to the youngest
Q, R, S, T
Which one is a composite volcano?
A
Which one is a cinder-cone volcano?
B
When a tectonic plate moves over a hot spot ......
a chain of volcanoes form
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