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WorksheetsTEST I - VOLCANO
Total questions: 30
Worksheet time: 29mins
What is a Volcano?
A. A cone-shaped mountain formed by erupting lava, ash and gases.
B. A landform which has a summit but without a crater.
C. A mountain created by the faulting and folding of earth’s crust.
D. The movement of the Earth’s crust when plate boundaries move.
What is meant by volcanic eruption?
It happens when hot lava, ash and gases are discharged from a volcanic vent.
It happens when the plate edges of the Earth’s crust move downward or sideways.
It is a region deep within the Earth’s mantle from which heat rises.
It is a sudden violent shaking of the ground, causing great destruction.
Which of the following volcano hazards is made up of rocky particles about the size of a grain of sand?
Volcanic bombs
Volcanic dust
Volcanic ash
Pyroclastic
Mt. Mayon is an example of a volcano because .
Cinder cone, it is formed exclusively of pyroclasts.
Composite, it is composed of alternating layers of pyroclastic fragments and solidified lava flows
Shield, it is constructed of solidified lava flow
Caldera, it was created when the summit was blown off by exploding gases
Eruptions caused by the interaction of water into heated magma is called:
Vulcanian
Plinian
Phreatic
Strombolian
6. Mount Pinatubo erupted last April 2, 1991. What kind of volcanic eruption was Mt. Pinatubo?
Vulcanian
Phreatomagmatic
Strombolian
Plinian
Before the lava reaches the surface' the molten material is called _________.
Rock
Magma
Volcanic Ash
Pyroclastic
A Lahar is a mudflow produced when a volcano's heat melts the snow and ice and it mixes with the ash and debris from the volcano.
TRUE
FALSE
These are the largest rock particles released from a volcano.
Volcanic dust
Volcanic ash
Pyroclastic
Volcanic bombs
During a volcanic eruption, stay indoors and
stock food and water in covered containers
cover your nose with damp cloth
remove ash deposits on roofs
Removing ash deposits on roofs should be done
before a volcanic eruption
during a volcanic eruption
after a volcanic eruption
This type of volcano looks like a warrior’s shield. It is formed from runny lava that spread out into wide broad slopes.
shield volcano
stratovolcano
cinder cone volcano
In Movie DANTE'S PEAK, during the evacuation process, several people tried to fly out by helicopter and was unsuccessful, why?
Earthquakes caused vibrations on the helicopter and damaged the motor.
The helicopter was caught in a mudflow known as a Lahar.
Due to so much ash being in the air it choked out the engine and it crashed.
In the movie Dante's Peak, what caused the fish to die in the lake?
Sulfuric acid leaked into the lake.
Lava
Lahar Flow
Steam Vents
The steam, ash and hot gases produced from a volcano can melt the snow and ice causing it to mix with the ash and other debris. This is called a Lahar (mudflow). What did it so in the movie?
It caused the dam and the bridge to break.
It flowed out into a flat area and nothing was damaged.
It caused the lake to fill up to flood stage.
This fast moving hot cloud of ash, hot gases and steam and volcanic bombs can move down the mountain at speeds of 200 km/h.
Lahar Flow
Steam Cloud
Pyroclastic Flow
Volcanic Ash
Two plates come together or collide at what boundary?
Convergent
Divergent
Hotspot
Transform
When two plates spread or move apart at what boundary?
Convergent
Divergent
Transform
Hotspot
Volcanoes form along
the coast of Antarctica.
North American mountain ranges.
the boundaries of Earth’s plates.
islands in the Pacific Ocean.
Geologists have detected many small earthquakes in the area near the dormant Mammoth Lakes volcano, what might happen in the near future?
A volcano may erupt.
A landslide may occur.
A forest fire will start.
A storm will start.
What does PHIVOLCS mean?
Philippine Volcanology and Seismology
Philippine Institute of Volcanologist
Philippine Institute of Volcanology and Seismology
Philippine Institute of Volcanologist and Seismologist
Which of the following should be done BEFORE a volcanic eruption?
Stay INDOORS. Close all windows and doors.
Listen to the official radio or television stations, if possible for the latest informations.
Carefully clear roofs as ash accumulated is very heavy that can cause roofs to collapse.
Develop an emergency plan including evacuation routes away from the volcano.
Identify the statement that is TRUE of geothermal energy.
A geothermal power plant can be successful almost anywhere.
The initial costs associated with a geothermal power plant are low.
There is no risk of the release of hazardous substances during drilling.
Geothermal energy is easy on the local environment.
Geothermal energy is a good source of energy because it is what?
free
renewable
non-renewable
fossil fuel
“Geothermal” means:
“Geo” means “Fossil” and “Thermal” means “Fuel”
“Geo” means “Plants” and “Thermal” means “Oil”
“Geo” means “Earth” and “Thermal” means “Heat”
“Geo” means “Oil” and “Thermal” means “Drill”
Which of the following is NOT a disadvantage of using Geothermal Energy?
More costly
Posses environmental problems
Require proper supervision to maintain its stability and sustainability
No fuel requirement and naturally-occurring
All of the following are signs of Volcanic Eruption, EXCEPT..
increase frequency of earthquake in the area
changes in chemical content of water
Withering of plants and vegetation in the areas around the volcano
decrease in the temperature of hot springs and crater lakes within the areas of a volcano
A volcano that is currently erupting
Active volcano
Dormant volcano
Extinct volcano
WHAT TYPE OF VOLCANO IS SHOWN IN THE PICTURE?
Composite
Cinder-cones
Shield
Magmatic
What type of volcano is shown in the picture?
Cinder cones
Composite
Lava domes
Shield
