Convergent
What is a convergent boundary?
two plates pushing towards each other
What is a divergent boundary?
two plates pulling away from each other
What is the first layer of the earth called?
Crust/ Lithosphere
What is a hazard?
A natural disaster
What are the three types of impacts caused by hazards?
Environmental
Social
Economic
What type of hazards does a convergent boundary create?
Volcanic eruptions
Earthquakes
Tsunamis
What type of hazards does a divergent boundary create?
Earthquakes
What is the second layer of the earth called?
Asthenosphere (Upper mantle)
What are hazards caused by?
Movement in the tectonic plates
What is a long term impact?
A consequence that occurs for a long time
What is a ocenic-oceanic convergent boundary?
Two ocean floors pushing towards each other
What is a rift valley?
Is a long or short valley between two plates causing a deep gap between either plate.
What is the third layer of the earth called?
Mantle
Can hazards be predicted?
Yes
What is a short term impact?
A consequence that only lasts a short while
What is an oceanic-continental convergent boundary?
Ocean crust collides with the continental crust causing the ocean crust to subduct.
What are mid-oceanic ridges?
Are caused when the sea floor slowly moves apart creating bumps between the two plates.
What is the centre of the earth called?
Core
What does a 'Richter Scale' measure?
What is a natural impact?
Impacts on the environment
True or false? Convergent boundaries are only along continental crusts.
False
What type of landforms would a oceanic-oceanic divergent plate make?
Fault zones/ trenches
What is the hottest section of the earth?
core
How are volcanoes caused?
By movement in the plates
What is a built impact?
Impacts on infrastructure such as buildings, roads etc
Convergent boundaries create mountains. True or False
True
True or false. Divergent boundaries ONLY create tsunamis.
False
What are the three tectonic plates?
Convergent, transform and Divergent
How do tsunamis begin?
Tsunamis are created by the aftershocks of earthquakes, pushing the water back creating momentum for the seismic waves.
List a social impact of an earthquake
People dying/injuries, housing destroyed, business's destroyed
Name a country/place with convergent boundaries.
Japan
Tonga
What type of landforms does divergent boundaries create?
Rift Valleys
Mid-oceanic ridges
Define, 'Continental crust'
Crust on land/continent
How are volcanoes created?
Convergent boundaries push together causing friction which heats up from the core pushing magma up to the crust surface.
List an environmental impact of a volcanic eruption?
Water quality drops
lack of food growing
habitats destroyed
Oxygen quality drops
What type of landforms does convergent boundaries create?
Mountains
Volcanoes
Subduction Zones
Trenches
Explain how ridge valleys are created by divergent boundary movement?
By pulling apart both plates create little bumps of crust which are breaking off the plates at either ocean or continental crusts.
Define 'oceanic crust'
Crust on the ocean floor
What is the Pacific Ring of Fire?
A connecting ring of circles where the most tectonic plate movement occurs.
List a social, economic and environmental impact of a tsunami.
Social: Injuries
Economic: Business closure
Environmental: Animals habitat ruined