Quiz 21 Flashcards
At a conservative margin, what direction are plates moving?
Sideways past each other or in the same direction at different speeds
What is the theory of plate tectonics?
The earths crust is split into tectonic plates which can move
Explain why tectonic plates are moving?
Complex interactions between the dense crust and the less dense mantle
What is the difference between a primary effect and a secondary effect of a natural hazard?
Primary effects happen immediately as a result of the hazard, secondary effects can be delayed
At what type or types of plate margin are earthquakes more likely?
All types
What are 2 types of crust?
Oceanic and continental
Which natural hazards are found at a plate boundary?
An earthquake or volcano
Give 3 examples of secondary effects of earthquakes
Tsunamis,food shortages and economic weakening
Where is continental crust found?
Under land
At a destructive margin,which direction are the plates moving?
Towards each other
Give 4 examples of climatic hazards
Flooding
Tropical storms
Tornadoes
Droughts
What are the 3 types of plate margin?
Constructive
Destructive
Conservative
At what type of types of plate margin are volcanoes more likely?
Destructive and constructive
Give 4 examples of tectonic hazards
Earthquakes
Volcanoes
Tsunamis
Avalanches
What is meant by hazard risk?
The chance of a natural hazard affecting people
What are the 2 main types of response to a natural hazard?
Immediate and long-term
What is a natural hazard?
An extreme natural process that can cause significant damage and disruption to humans
Where is oceanic crust found?
Under the oceans
What are main 2 types of natural hazard?
Tectonic and climatic
What do plate margins or boundaries mean?
Given to the area where different plates meet
