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Sci Lesson 1 Earthquakes > Sci Lesson 1 Earthquakes > Flashcards

Sci Lesson 1 Earthquakes Flashcards

1
Q

What is always moving?

A

Crust of the earth

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2
Q

What causes earthquakes?

A

the sudden movement of the Earth’s crust can cause rocks to change its position and release a big amount of energy that can cause earthquakes.

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3
Q

What are the 3 main ways to do when an earthquake occurs?

A

Drop, Cover, and Hold

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4
Q

What are the Earth’s 3 layers?

A

Crust, Mantle, and Core

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5
Q

Outermost layer where living things exist?

A

Crust

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6
Q

What is Crust made up of?

A

Basalt and granite rocks

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7
Q

What is crust?

A

Outermost layer where living things exist

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8
Q

What is the second layer?

A

Mantle

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9
Q

Why the properties and physical state of the mantle are not uniform throughout?

A

Due to the difference of temperature

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10
Q

Stable and mostly solid?

A

Upper Mantle

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11
Q

is liquid because of extreme heat or very extreme heat or very high temperature and pressure

A

lower mantle

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12
Q

What is upper mantle?

A

stable and mostly solid

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13
Q

What is lower mantle?

A

is liquid because of extreme heat or very extreme heat or very high temperature and pressure

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14
Q

What is the liquid part of the mantle?

A

Hot molten rocks

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15
Q

What is the core’s two layers?

A

Outer core and Inner Core

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16
Q

What is the outer core made out of?

A

liquid

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17
Q

What is the inner core made out of?

A

Solid

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18
Q

The crust and the solid upper part of the mantle make up the what?

A

Lithosphere

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19
Q

The liquid part of the mantle and the outer core make up the what?

A

Asthenosphere

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20
Q

What is Lithosphere?

A

The crust and the solid upper part of the mantle

21
Q

What is Asthenosphere?

A

The liquid part of the mantle and the outer core

22
Q

The lithosphere floats in the what?

A

Asthenosphere

23
Q

According to the Plate Tectonic Theory, the Earth’s crust is broken into separate pieces is called what?

A

Tectonic Plates

24
Q

Tectonic Plates move relative to each other at a rate of what?

A

5 to 10 centimeters per year.

25
Q

Are the sites of many processes that shape the surface of the Earth, including earthquakes.

A

Plate Boundaries

26
Q

3 Types of Tectonic Boundaries

A

Convergent Boundary, Transform Boundary, and Divergent Boundary

26
Q

What occurs when two plates move towards each other?

A

Convergent boundary

27
Q

What happens when plates move away from each other?

A

Divergent boundary

28
Q

Two plates sliding past each other forms what?

A

Transform boundary

29
Q

What causes the movement of molten rocks?

A

Heat and pressure in the asthenosphere

30
Q

What are waves that travel through the Earth’s layers and give out low frequency energy?

A

Seismic Waves

31
Q

Seismic waves are recorded using a what?

A

Seismograph

32
Q

How does an earthquake occur?

A

When rocks break in a fault or crack in the crust

33
Q

The point of origin of an earthquake underground is the what?

A

Focus

34
Q

The point directly above the focus on the surface of the Earth is the

A

Epicenter

35
Q

Earthquake is felt the strongest in the what?

A

Epicenter

36
Q

The movement of the breaking rocks underground release large amount of energy that caused what?

A

Seismic Waves

37
Q

Sudden movement of the rocks or when two tectonic plates collide against each other, it is called a what?

A

Tectonic Earthquake

38
Q

Due to the movement of magma within the volcanoes, it is called a what?

A

Volcanic Earthquake

39
Q

Sometimes, earthquakes occur because of human activity such as big explosions in the wrong treatment of the ground may trigger what?

A

Man-made earthquakes

40
Q

Earthquakes generally occur along what?

A

Faults

41
Q

What are cracks in the Earth’s crust between two big plates?

A

Faults

42
Q

What agency of the government monitors earthquakes?

A

PHIVOLCS

43
Q

PHIVOLCS

A

Philippine Institute of Volcanology and Seismology

44
Q

The strength and damage caused by an earthquake is measured by what?

A

Magnitude or intensity

45
Q

Magnitude is recorded by a what?

A

Seismograph

46
Q

Is associated with the energy released by an earthquake which is a way to tell its strength

A

Magnitude

47
Q

Measures the extent of damage caused by an earthquake on the surface of the ground

A

Intensity

48
Q
A

Sci Lesson 1 Earthquakes (1 decks)

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