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Molten rock that erupts and flows onto the Earth's surface is known as...
Lava
Which island chain in the Pacific Ocean was formed from layers of lava that flowed, cooled, and hardened into rock?
Hawaii
All volcanic materials, including lava, rocks, ash, and gases, travel up through a central pipe called a...
Vent
During an eruption, the widening of the central vent at the Earth's surface forms a....
Crater
The most common type of volcano, built from alternating layers of ash and lava into a cone-shaped mountain, is a....
secondary cone
What does the word **'quake'** literally mean in the term earthquake?
Shaking
Most earthquakes and volcanoes in the world are concentrated in an unstable geological region known as the...
Pacific ring of fire
A tsunami is a huge ocean wave triggered by an earthquake ...
under the sea
When tsunami wave reaches a shallow coastal area, it (decreases/increases) in height.
increases
The molten rock while its beneath the Earth surface in the mantle is called ...
magma
The benefit of volcanic activity for the soil is ...
fertile the soil
The primary disaster caused when a massive tsunami wave strikes land is ...
flooding/ damage/ people injured
What happens to lava after it stops flowing and cools down?
It hardens into rocks
Beside lava, what material can volcanoes send out during an eruption?
Rocks/ Volcanic ash/ gases
What is the most common type of volcano on Earth?
A composite volcano
What is an Earthquake?
A shaking of the Earth
