Quarter 1, Lesson 5

Question 1

is the result of a sudden
release of energy in the Earth’s crust that
creates vibrations or seismic waves that
radiate up to the surface, causing the
ground to shake.

Answer 1

Earthquake

Question 2

Vibration of the Earth produced by
the rapid release of energy.

Answer 2

Earthquake

Question 3

Energy moving outward from the focus of an
earthquake

Answer 3

Seismic Waves

Question 4

location of initial slip on the fault; where the
earthquake origins.

Answer 4

Focus

Question 5

location of initial slip on the fault; where the
earthquake origins.

Answer 5

Focus

Question 6

spot on Earth’s surface directly above the
focus.

Answer 6

Epicenter

Question 7

POTENTIAL EARTHOUAKE HAZARD

Answer 7

(GGLETE)
• Ground shaking
• Ground Rupture
• Liquefaction
• Earthquake-induced ground subsidence
• Tsunami
• Earthquake-induced landslide

Question 8

is a term used to describe
the vibration of the ground during an earthquake.

Answer 8

Ground Shaking

Question 9

is the visible breaking and
displacement of the earth’s surface along the
trace of the fault, which may be small or large in extent.

Answer 9

Ground Rupture

Question 10

• When water-saturated granular material like
sand loses its strength temporarily, it gets
converted into a liquid state from solid, and
hence liquefaction takes place.

Answer 10

Liquefaction

Question 11

Lowering of the ground surface, known as
subsidence or settling, often occurs during
an earthquake. Common causes of ground
subsidence during an earthquake include
consolidation or failure of the ground under
a foundation, densification of sand and
gravel layers due to the ground shaking and
liquefaction.

Answer 11

Earthquake induced ground substance

Question 12

gradual settling or
sudden sinking of the Earth’s surface owing
to subsurface movement of earth materials.

Answer 12

Earthquake-induced ground subsidence