Earthquake Flashcards

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1
Q

What causes earthquake?

A

Volcanic
Tectonic
Collapse

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2
Q

A scientist who studies earthquakes and seismic waves.

A

Seismology

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3
Q

The waves of energy caused by the sudden breaking of rock within the earth or an explosion.

A

Seismic waves

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4
Q

Energy that travels through the earth and is recorded on ______?

A

Seismographs

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5
Q

The strength of an earthquake is measured by the_____?

A

Richter Scale

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6
Q

Types of seismic Waves

A
  1. PRIMARY WAVE
  2. SECONDARY WAVE
  3. SURFACE WAVE
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7
Q

How strong earthquake feels to observer

A

Intensity

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8
Q

Related to energy release

A

Magnitude

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9
Q

The block above the fault is the____?

A

Hanging wall

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10
Q

The block below the fault is the ______?

A

Footwall block

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11
Q

If the footwall is above the hanging wall it is called?

A

Normal slip

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12
Q

If the hanging wall is above the footwall it is called a____?

A

Reverse slip

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13
Q

Reverse faults are often called____?

A

Thrust faults

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14
Q

Dip-slip faults on which the hanging wall moves down relative to the footwall

A

Normal faults

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15
Q

Dip slip faults on which he hanging wall moves up relative to the footwall

A

Thrust or reverse faults

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16
Q

Strike slip faults across which the block moves to the right

A

Right-lateral faults

17
Q

Strike slip faults across which the block moves to the left

A

Left-lateral faults

18
Q

Location within the earth where fault rupture actually occurs

A

Focus

19
Q

Location on the surface above the focus

A

Epicenter

20
Q

Known to have recently generated earthquakes within the last 10,000 years and may still continue to generate earthquakes

A

Active faults

21
Q

Do not show signs off ever having generated on earthquake in the last 10,000 years but may possible still generate an earthquake in the future.

A

Inactive faults

22
Q

Phivolcs whole name

A

The Philippine Institute of volcanology and seismology

23
Q

DOST whole name

A

Department of science and Technology

24
Q

PEIS

A

PHIVOLCS Earthquake Intensity Scale

25
Q

ITCZ whole name

A

Intertropical Convergence Zone

26
Q

PAR whole name

A

Philippine Area of Responsibility

27
Q

TCWS whole name

A

Tropical cyclone warning signal

28
Q

PAGASA Whole name

A

The Philippine Atmospheric Geophysical and Astronomical Services Administration

29
Q

A fracture or break in the earths crust where earthqaukes are most likely to occur repeatedly

A

Faults

30
Q

These breaks are called____?

A

Fault zone

31
Q

The most extensive fault system and cuts through the enire Philippine archipelago

A

THE PHILIPPINE FAULT ZONE

32
Q

Consist of two northeast trending right lateral strike slip fault begin in san Mateo Rizal.

A

THE VALLEY FAULT SYSTEM

33
Q

Found offshore between batangas and Mindoro island

A

LUBANG FAULT

34
Q

Marked by a slope between mountains of western Mindoro and the flatlands of eastern Mindoro.

A

THE CENTRAL MINDORO FAULTS