Rock Brain Busters
What is a sedimentary rock?
A rock that is made of sediments that have been naturally compacted and cemented together.
What is geology?
What is chemical weathering?
a process that breaks down rocks by changing the minerals they contain.
What is a tsunami?
A gigantic wave of seawater was caused by an earthquake in the oceanic crust.
What is an active volcano?
A type of volcano that has erupted in the past 10,000 years and is likely to erupt again.
What is a geyser?
an underground hot spring that periodically erupts shooting hot water and steam into the air.
What is an igneous rock?
A rock that forms when magma cools and solidifies.
Geysers, volcanoes, and hot springs all share what?
They form both along plate boundaries and above hotspots.
What is a hydrothermal vent?
a deep-sea geyser that forms as seawater sinks down through cracks in the oceanic crust and then releases extremely hot, mineral-rich water back up through cracks in the crust.
What is a mid-ocean ridge?
An underwater mountain.
What are fold mountains?
Mountains formed when rocks are pushed up into huge folds by moving tectonic plates; they often contain quite a bit of sedimentary rock.
What is an earthquake?
What is a metamorphic rock?
The theory of plate tectonics is?
Earth's crust and part of the mantle are broken up into sections that slowly move.
What is a seamount?
An underwater volcano forms wherever magma is erupting through oceanic crust.
What is an ocean trench?
A narrow, extremely deep valley.
What are fault-block mountains?
Mountains are formed when gigantic blocks of rock move up and down along faults.
What is a rock?
Natural occurring nonliving solid made of minerals.
What is erosion?
What is physical weathering?
A process that breaks big rocks into smaller rocks without changing the minerals they contain.
What is the rock cycle?
Rocks are created, destroyed, and recreated in a continuous cycle.
What is an extinct volcano?
A type of volcano that has not erupted for at least 10,000 years and is not likely to erupt again.
What is the Richter Scale?
The scale applies numbers to measure the magnitude of an earthquake.
What is a hotspot?
A very hot region deep within Earth's mantle where a huge magma chamber forms.
What is a dormant volcano?
a type of volcano that is considered active but hasn't erupted for a very long time.
What are dome mountains?
What is a seismograph?
A graph that produces lines to show the energy of seismic waves.
What does a myth help explain?
An unpredictable natural event.
What is a fault?
A crack in Earth's crust.
The continental drift hypothesis explains what?
All of the continents were once joined, until they broke apart and slowly moved away from each other.