natural hazards and the earth Flashcards

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1
Q

what is a natural hazard?

A

is when a tornado,hurricane, tsunami etc occurs and not a large sum of people are harmed.

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2
Q

what is a natural disaster?

A

a natural disaster is a event such as a tornado that effects a lot of people and live stock

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3
Q

name a natural hazard

A

1990 Queensland flood

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4
Q

name a natural disaster

A

2004 Southern India tsunami.

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5
Q

name the 4 layers of the earth

A

inner core,outer core,mantle crust.

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6
Q

how are earthquakes created?

A

earthquakes are caused by the release of built-up pressure inside the Earth’s crust.

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7
Q

what are convection currents?

A

movement with the earth’s mantle that drives tectonic plates to move.

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8
Q

what is the main reason hazards and disasters occur?

A

built up energy.

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9
Q

define tectonic plate

A

the division of the earth’s crust.

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10
Q

define the mantle

A

the largest and semi molten part of the earth’s structure

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11
Q

what is continental drift?

A

the gradual movement of continents through geological time.

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12
Q

what are pate boundaries?

A

the place where two or more tectonic plate meet.

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13
Q

define core

A

the inner most part of the earth’s structure.

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14
Q

what should and regency survival bag include?

A

food, water,any items you wish to save.

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