Rocks
What are three types of rocks ?
Igneous, sedimentary and metamorphic rock
What is an earth quake ?
An earthquake is an intense shaking of Earth’s surface. The shaking is caused by movements in Earth’s outermost layer.
What is a volcano?
A volcano on Earth is a vent or fissure in the planet's crust through which lava, ash, rock and gases erupt.
What is igneous rock ?
Igneous rocks (from the Greek word for fire) form when hot, molten rock crystallizes and solidifies
why does earth quake happen ?
Earthquakes are usually caused when rock underground suddenly breaks along a fault.
Where are volcano located ?
Volcanoes are found along destructive(subducting) plate boundaries
What is metamorphic rock ?
rock, but have been substantially changed from their original form.
what Is use to measure the earthquakes?
Earthquakes are measured using seismographs, which monitor the seismic waves that travel through the Earth after an earthquake strikes.
What is ring of the chain ?
The 'Ring of Fire' is a volcanic chain surrounding the Pacific Ocean.
What is sedimentary rock ?
Sedimentary rocks are types of rock that are formed by the accumulation or deposition of small particles and subsequent cementation
How does an earth quake start ?
During the earthquake and afterward, the plates or blocks of rock start moving, and they continue to move until they get stuck again.
What are the features of volcano ?
Volcanoes are found in three states - extinct, dormant and active. An extinct volcano will never erupt again. A dormant volcano has not erupted in 2000 years. An active volcano has erupted recently and is likely to erupt
What is an rock cycle?
The Rock Cycle is a group of changes. Igneous rockcan change into sedimentary rock or into metamorphic rock.
How long does earth quake last?
. Strong ground shaking during a moderate to large earthquake typically lasts about 10 to 30 seconds.
Why do volcano explode ?
Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts.