What is a tsunami?
A tsunami is a very large wave.
How does a tsunami happen?
It happens after underwater earthquake, underwater volcanic eruption or underwater landslide.
What is an earthquake?
An earthquake is the sudden shaking of the ground.
How does an earthquake start?
Layers of rock deep inside the ground push against each other.
How is a volcano different from a mountain?
A volcano has a hole at the top, called crater.
What can we see after the earthquake?
Destroyed buildings and roads, cracks in the ground.
What is a flood?
Water that covers land not usually covered by water.
What is a landslide?
A landslide is when the side of a hill or mountain falls down.
What does water do to the soil?
Water makes soil lose.
What is lava?
Lava is hot melted rock.
What happens to lava after a volcanic eruption?
It cools down and turns into rock.
