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Science > 3rd Monthly Test > Flashcards

3rd Monthly Test Flashcards

G9

1
Q

A vent, hill, or mountain that erupts

A

Volcanoes

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2
Q

Volcanoes are mostly found in the

A

Pacific Ring of Fire,

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3
Q

another name for Pacific Ring of Fire,

A

Circum-Pacific Belt.

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4
Q

monitors volcanoes in the philippines

A

PHIVOLCS

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5
Q

meaning of PHIVOLCS

A

Philippine Institution of Volcanology and Seismology

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6
Q

The side of the volcano

A

Flank

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7
Q

Molten rock that erupts from a volcano and solidifies as it cools.

A

Lava

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8
Q

Mouth of a volcano

A

Crater

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9
Q

The highest part of a volcano

A

Summit

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10
Q

The entrance; part of a conduit that ejects lava and ash

A

Throat

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11
Q

fragments of lava and rock smaller than 2mm.

A

Ash

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12
Q

A cloud of ash

A

Ash cloud

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13
Q

Molten rock beneath the Earth’s surface.

A

Magma

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14
Q

Underground passage magma travels through. It connects the magma chamber to the throat.

A

Conduit

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15
Q

Flat piece of rock formed when magma hardens

A

Sill

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16
Q

Bodies of magma that cut through and across the layering of adjacent rocks. Formed when magma goes through fractures and solidifies.

A

Dike

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17
Q

Small cone shaped volcano formed by the accumulations of volcanic debris.

A

Parasitic Cone

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18
Q

The actual opening where the lava and ash come from.

A

Vent

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19
Q

Classification of A Volcano

According to Shapes

A

Cinder Cone, Composite, Shield

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20
Q

Simplest type. Built from pyroclasts. Usually small.

A

Cinder Cone

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21
Q

another name for Cinder Cone

A

scoria cones

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22
Q

Formed when viscous andestic lava flows out of a vent for a very long time

A

Composite

23
Q

Cone is symmetrical. Explosive eruptions.

A

Composite

24
Q

Another name for composite volcanos

A

Stratovolcanoes

25
Q

Formed by less viscous basaltic lava.

A

Shield

26
Q

Dome shaped with a wide base.

A

Shield

27
Q

Volcanos according to eruption

A

Active, Dormant, Inactive/Extinct

28
Q

Driven by steam due to rapid heating beneath a volcano. Releases steam.

A

Phreatic

29
Q

Occurs when water interacts with magma.

A

Phreatomagmatic

30
Q

Fountains of either basaltic or andesitic lava.

A

Strombolian

31
Q

Steam, viscous lava, volcanic material that very quickly gows down.

A

Pelean

32
Q

Tall eruptions that go up to 20km high.

A

Volcanian

33
Q

Most destructive and violent eruptions.

A

Plinian

34
Q

Volcanic materials go more than 20km high and form an eruption column.

A

Pilinian

35
Q

Advantages of volcanic eruption

A

Cools down the Earth

36
Q

Comes from heat contained in fluids in rocks beneath the Earth.

A

Geothermal Energy

37
Q

geothermal energy is obtained by what

A

drilling wells

38
Q

The Philippines is the ??? producer of geothermal energy globally.

A

3rd largest prducer

39
Q

How is Geothermal Energy generated?

A

Thermal energy from earth, mechanical energy in turbine, mechanical energy in generator, electrical energy

40
Q

2 ways

A

Geothermal Powerplants

Geothermal Heat pumps

41
Q

Where the heat of the Earth changes water into steam, then the steam turns a turbine.

A

Geothermal Power Plants

42
Q

Removes heat from the fluid in the Earth’s connection, concentrates it, then transfers it

A

Geothermal Heat Pumps

43
Q

Advantages of Geothermal Energy

A

Renewable, Sustainable, Environmentally friendly

44
Q

Disadvantaged of Geothermal energy

A

Trigger earthquakes
Costly
Environmentall PRoblems
Location-restricted

45
Q

Geo comes from the word

A

Earth

46
Q

Therme comes from the word

A

Heat

47
Q

volcanos according to eruption

A

Active, Dormant extinct

48
Q

they have erupted at least once in the last past 10 000 years and are likely to erupt again

A

Active

49
Q

active but not erupting; however they are expected to erupt anytime soon

A

Dormant

50
Q

not had any eruption in the past 10 000 years and are expected not to erupt anymore in the future

A

Extinct / Inactive

51
Q

Eruptions can be classified as

A

effusive or explosive

52
Q

Give examples of active volcanos

A

Mayon, Hibok-Hibok and Taal

53
Q

low in viscosity and low in gas content

A

Effusive eruptions

54
Q

high viscosity and high gas content.

A

Explosive eruptions

Science (12 decks)

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