VolcanoesOpracował Wojciech Szuster kl. Ia

VolcanoesTable of contents1.What is a Volcano?2.Construction of a volcano.3.Types of volcanoes.4.Flowing lava.5.Kilauea.6.Volcanoes in the world.7.The effects of volcanic eruptions.8.Research scientists.

Volcanoes1.What is a Volcano?Volcano (from the

Latin Vulcanus is the name of the Roman god of fire)- is a place on the Earth’s surface, which throws out lava,volcanic gases,pyroclastic material.

Volcanoes2.Construction of a

volcano.Volcano has:-magma chamber, which

is a source of magma-channels through

which magma comes out

-lava-other material ejected

during eruptions

Volcanoes 3. Types of volcanoes.

There are three kinds of volcanoes: -active volcanoes -dormant volcanoes - dead volcanoes Active volcanoes often erupt.Dormant

volcanoes are not usually dangerous but they erupt from time to time. Dead volcanoes don”t erupt for a long time and probably will not explode anymore.

Volcanoes4.Flowing lava. Magma is hot. It‘s

temperature is about 1200*C. It glows red. From the cooling lava gases come out.

Volcanoes 5. Kilauea. There is a Kilauea on

Hawaii islands . This is one of the five volcanoes on the islands.

Kilauea is the most active volcano. It is also the most visited volcano on the Earth. It appeared on the Earth 600000 years ago.Since 1983 it constantly erupts. It can throw lava up to 600 meters . According to the legend Pele, ( the goddess of volcanoes )lives in Kilauea.

Volcanoes 6. Volcanoes in the

world.MOUNT PELEE,

Martinique, 1902 eruption 8th of May

1902 destroyed the town and killed more than 26000 people.

Volcanoes6. Volcanoes in the world.

C.dMAUNA LOA, Hawaii , USA,

1984 it’s the largest Volcano on

the Earth which has been, active for thousands of years. Its last eruption was from 24th

March to 15th April in 1984. No one died. Previous eruptions destroyed the entire village.

Volcanoes6. Volcanoes in the

world. C.d KRAKATAU, Indonesia,

1883 Krakatau eruption

was a series of violent explosions, which could be heard in Perth, Australia. Volcano threw solids at a height of over 30 km.

Volcanoes6. Volcanoes in the

world. C.dMOUNT PINATUBO,

Philippines, 1991 Violent eruption of

the volcano blew up almost 150 meters of its top. It threw out dust and gases to the height of 40 km.

Volcanoes6. Volcanoes in the

world. C.dTARAWERA, New

Zealand, 1886 This volcano

erupted in three places. It killed about 120 people.

Volcanoes6. Volcanoes in the

world. C.dGALUNGGUNG,

Indonesia, 1982 Outbreak was

from April 1982 to January 1983. 68 people were killed. Two planes nearly crashed when they flew into a cloud of ash. Their engines stopped working.

Volcanoes 7.The effects of volcanic eruptions. Volcanic eruptions cause:a lot of damagethe formation of hot cloudsavalanches and mudflowsthe appearance or disappearance of volcanic

islands

Volcanoes 8.Research scientists. Scientists report that the eruptions are

usually preceded by warning signs for example :

tremorsgases emissionchanges in the shape of volcanoesBut some types of volcanoes can erupt without

warning.

Volcanoes THANK YOU FOR YOUR ATTENTION

Made by: Wojciech Szuster kl.Ia Literature: Encyklopedia dla dzieci „Ziemia” – Michael

Allaby