Guess which natural phenomenon or natural disaster is being defined.
tsunami: an earthquake happening
under the sea floor
6
earthquake: a sudden violent movement
选修 6
Unit 5
1. To be able to list some natural disasters 2. To have a general understanding about volcanoes 3. To know some basic information about Mount Kilauea
What results does it bring?
P33 2
Group discussion
Have you ever considered how weak humans are compared with a volcano, hurricane or earthquake? In your groups discuss ways human beings protect themselves from powerful natural forces.
winds and blowing sand or dust
9
flood: a lot of water in an area which
is usually dry
10
tornado: a column of air that turns
very quickly 11
typhoon: a tropical cyclone (热带气旋)
A geologist taking a sample on July 14, 2010, from a recently formed skylight (天窗) on the Quarry flow lava tube (采石场流岩管). The
Quarry lava flow began in 2010.
3
What’s the video about?
More and more natural disasters and extreme weather are impacting
on our lives. Can you list any? 4
There are some words about natural phenomena or
Please look at the diagram below. It shows an erupting volcano.
ash cloud/volcanic ash crater
lava
The magma erupts from the crater;
the lava flows slowly down the mountain.
occurring in the western Pacific or
Indian Ocean
12
hurricane: a violent storm with
extremely strong winds and heavy rain 13
landslide: a large amount of earth and
The position of the Kilauea volcano Let’s learn something about one of the most active volcanoes —The Kilauea volcano.
Now watch a piece of video about Mount Kilauea to know more about it.
1983.
An aerial (空中的) view of Pu'u O'o crater, where the eruption has been occurring, at dusk, soon after the Kilauea eruption began. (June 29, 1983)
An aerial view of Pu'u O'o crater from the southeast on April 21, 1988.
Possible answers:
We can help lessen the damage and losses caused by it through combined efforts of risk assessment (评估) and early warning.
We should do more to protect the environment to reduce the natural disasters.
Group work
Have you ever thought about how powerful nature is? Try to complete the table.
flood hurricane tornado earthquake
What phenomena does it have?
magma
1. How is a volcano formed?
The rocks under the earth become hotter and hotter and erupt from the mountain.
2. From where is it most probable for a volcano to erupt?
Mount Kilauea in Hawaii has erupted __6_2___ times
since 1952.
The current eruption began in _1_9_8_3__ and has been going on ever since.
Let’s enjoy some wonderful moments of the long eruption.
of the Earth’s surface, sometimes causing great damage
7
thunderstorm: a lot of rain falling
quickly, with loud noises and flashes of light
8
sandstorm: a storm caused by strong
Lava from Kilauea volcano flows from a tube into the sea
near Kupapau Point in Hawaii. (Nov. 27, 1989)
Lava enters the ocean in May 2010 from the Kalapana flow at Kilauea volcano in Hawaii.
natural disasters. Match them up.
闪电
flood
洪水lΒιβλιοθήκη ghtning龙卷风thunderstorm
雷暴
sandstorm
火山喷发
hurricane
沙尘暴
tornado
海啸
typhoon
地震
landslide
飓风
earthquake
滑坡
tsunami
台风
volcanic eruption 5
Homework
1. Look up the new words and expressions of the text in the dictionary.
2. Preview the reading passage— AN EXCITING JOB
Joints between the plates. Often near the oceans.
3. What types of volcanoes do you know?
An extinct volcano
An active volcano
A dormant
volcano (休眠火山)
Haleakala Crater, the largest dormant volcano in the world (Maui, Hawaii)
Hawaii’s Kilauea volcano began erupting in January 1983 with a spectacular arching (拱起) lava fountain.
This photo was taken on Feb. 25, 1983.
Geologists preparing to collect samples near an active vent (排放口) erupting in the background at Kilauea’s east rift zone (断裂带) on Jan. 7,
An aerial view of the lava lake in Pu'u O'o crater, taken Aug. 30, 1990. The crater was about 800 feet (250 meters) in diameter.
Kilauea volcano’s eruption destroyed Hawaii Volcanoes National Park’s Wahaula Visitor Center, shown on the top in 1987. The building was set aflame (着火的) by molten (熔化的) lava on June 22, 1989.