Earthquakes are natural events that cause the
ground to shake due to movements beneath the
Earth’s surface. These movements happen when
energy stored in rocks is suddenly released.
Earthquakes can vary in strength, from small
tremors that people hardly feel to powerful ones
that can cause serious damage. Studying
earthquakes helps people understand how they
occur and how to stay safe when they happen.
Exploring Earthquakes
What is an Earthquake?
An earthquake is the sudden shaking of the Earth's
surface caused by the movement of tectonic plates. The
Earth’s crust is made up of large pieces called plates.
When these plates move or collide, energy is released,
causing vibrations known as seismic waves.
Causes of Earthquakes
Parts of an Earthquake
Parts of an Earthquake
Movement of Tectonic Plates
Volcanic Activity
Landslides
Human Activities
Most earthquakes happen when tectonic plates move against
each other.
When magma moves beneath volcanoes, it can cause the
ground to shake.
Large landslides can also create vibrations in the ground.
Mining, drilling, or explosions can sometimes trigger small
earthquakes.
Focus (Hypocenter)
The point inside the Earth where the earthquake
begins.
Epicenter
The point on the Earth’s surface directly above the
focus.
Fault Line
A crack in the Earth's crust where tectonic plates
move.
Parts of an Earthquake
Earthquakes can have serious effects on people
and the environment, such as:
Destruction of buildings and roads
Landslides and ground cracks
Tsunamis if the earthquake occurs underwater
Fires caused by broken gas or electrical lines
Injuries and loss of life
Earthquake Safety
Earthquakes in the Philippines
The Philippines experiences earthquakes because it is
located along the Pacific Ring of Fire, an area where many
tectonic plates meet. Because of this, earthquakes and
volcanic activity frequently occur in the country
Earthquakes are powerful natural events that remind us of
the dynamic nature of the Earth. Although they cannot be
prevented, understanding their causes and learning safety
measures can help reduce their impact and protect lives.