Test
The force that acts upon rock to change its shape or volume is known as:
stress
What does the term "tsunami" mean?
big wave or harbor wave
Reminder: Be sure to review your volcano parts diagram in notes :)
side vent, central vent, pipe, crater, magma chamber
How can someone stay safe during a tsunami?
It what way could a volcano impact one of Earth's spheres? Can be positive or negative.
Some examples:
HYDROSPHERE: (-) The heat of the lava could raise the temperature of water nearby which might hurt organisms living in the water.
(+) Lava could block a flowing river and cause a lake to form over time which could be useful to local people
BIOSPHERE: (-) The ash, lava, cinders could impact habitats, causing animals/plants (living things) to suffer.
(+) New plant growth could begin, new species, etc.
ATMOSPHERE: (-) Gases escaping from volcano could put harmful things into the air.
GEOSPHERE: (+) New landforms could be created over time due to lava impact
A dead or ______ volcano, poses little threat.
extinct
Once magma reaches the surface it becomes known as:
lava
Secondary waves are known as:
S waves
How is a tsunami produced?
by an earthquake that occurs underwater
_____ can travel through Earth and can also change direction and speed.
seismic waves
P waves are also known as:
Primary waves
This type of stress pulls on Earth's crust making it thinner and thinner:
tension
Some of an earthquake's energy is released as these types of waves:
seismic
The size of an earthquake can be determined by measuring the ______ or height of a wave.
amplitude
Volcanic eruptions can occur:
on land or at bottom of ocean
What type of damage can a tsunami cause?
Which travel faster:
P waves or S waves?
P waves
A _____ volcano is also known as a sleeping volcano. It poses little threat but with the potential to "wake up"
dormant
This type of stress happens when rock gets pushed in opposite directions causing it to break or bend.
compression
What are some details you can give about explosive eruptions?
* Pipe pressure builds up
* Trapped gases escape very fast
* Ash, lava, cinders, and other debris are shot out into atmosphere
A break in the rock of Earth's crust or mantle is known as a:
fault
Magma is also known as:
molten (melted) rock
How does an earthquake form?
Stress builds up in Earth's plates and releases a lot of energy
What does a seismograph measure?
measures the waves produced by earthquakes
What is ONE way a volcanologist can predict hazards of volcanoes?