Hazards Flashcards

1
Q

volcano

A

A rupture in the crust of Earth that allows hot lava volcanic ash and gases to escape

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2
Q

tsunami

A

a large sea wave caused by an earthquake

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3
Q

earthquake

A

a violent shaking of the ground, typically causing great destruction, as a result of movements of the earth’s tectonic plates

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4
Q

Richter scale

A

the scale used to measure the magnitude of an earthquake

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5
Q

seismic waves

A

waves of energy that travel through the earth as a result of an earthquake, volcanic eruption or explosion

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6
Q

subduction zone

A

where one tectonic plate slips below another

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7
Q

rift zone

A

a large area of the earth in which tectonic plates are moving away from each other

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8
Q

hotspot

A

an area of the earth’s surface where the crust is thin and there can be volcanic activity

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9
Q

sheild volcano

A

a domed volcano with gently sloping sides

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10
Q

Cinder Cone Volcano

A

Cinder cone volcanoes form when lava erupts from a single opening in the ground. The eruption forms a hill with a crater in the center.

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11
Q

Dome Volcano

A

a volcano that forms when thick, viscious lava erupts, hardening into a dome shape

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12
Q

Composite Volcano

A

a composite volcano, is a conical volcano built up by many layers of hardened lava

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13
Q

weathering

A

the breaking down of bare rock mainly by water cooling and freezing as a result of temperature change

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14
Q

erosion

A

the wearing away and removal of soil by natural forces such as wind, water and human activity

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15
Q

deposition

A

the laying down of material carried by rivers, wind, ice and waves.

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16
Q

plate tectonics

A

a scientific theory explaining the structure of the earth’s crust

17
Q

transoortation

A

the movement of eroded materials to a new location by natural forces such as wind and water

18
Q

hot desert

A

a desert thats temperatures range between 45C and-15C in a 24 hour period. mostly located between the Tropic of Cancer and Tropic of Cspricorn

19
Q

cold deserts

A

cold deserts lie on high gorund usually north of Tropic of Cancer and South of the tropic ofCapricorn/ they include polar deserts and any precipitation falls as snow

20
Q

hot desert examples

A

the sahara, the arabian desert, the mojave desert

21
Q

cold deserts

A

antarctic desert, patagonian desert, gobi desert

22
Q

convergent plates

A

plates that move towards eachother and may create mintain ranges

23
Q

diverging plates

A

lpates that move away from eachother

24
Q

folding

A

geologic process by which surfaces in rocks become curved during deformation.

25
Q

faulting

A

an area on the earth’s surface that has a fracture

26
Q

uplifting

A

Uplifting is the process by which Earth’s surface slowly rises

27
Q

importance of soil

A

soil is essential for healthy plant growth, human nutrition, and water filtration.

28
Q

australian landforms

A

uluru
cradle mountain
flinders ranges

29
Q

how are mintains formed

A

when pieces of Earth’s crust (tectonic plates) converge against each other in a process called plate tectonics

30
Q

karst landscapes

A

karst landscapes are landscapes where the dissolving of bedrock has created sinkholes, sinking streams, caves and springs. karst landscapes have soluble rock types like limestone and marble. karst caves contain stalagmites and stalactites

31
Q

4 landform regions of australia

A

the coastal plains
the eastern highlands
the central lowlands
the western plateau