EarthquakesEarthquakes

Lesson 26 & 27Lesson 26 & 27

RevisionWords & phrases: a large number of buildings the number of people who lost homes

reached as many as… the electricity was cut off… scientist Pacific plate movement … along the lines where two earthquake… … strong ones may stay up … earthquake will hit … The population … is now ten times more than …

Revision Grammar

San Francisco was shaken by a earthquake.

A great part of the city was destroyed and a large number of buildings were burnt.

A road which was built like a bridge over another road fell onto the one below.

The pacific plate which is moving towards the northwest meets the North American plate.

US

Map

•

San Francisco

Coit Tower

Fill in formMain Idea Details

It happened at

was destroyed.

were

burnt.

people lost their homes.

people died.

5:13 on the morning of April 18th, 1906.

A great part of the city 1906 Earthquake

A large number of buildings

250,000

700

The

Para. 1

Paragraph 1 At 5:13 on the morning

of April 18th, 1906, the city of San Francisco was shaken by a terrible earthquake. A great part of city was destroyed and a large number of buildings were burnt. The number of people who lost homes reached as many as 250,000. About 700 people died in the earthquake and the fires.

Fill in form

Main Idea Details

It happened

It was America’s

Many people were in their

Buildings and a lot of

fires

The electricity

on the evening of October 17th,1989.

second strongest earthquake.

cars.

were destroyed

happened.was cut off for several days too.

The1989Earthquake

killedPara. 2-3

Paragraph 2 Another earthquake shook San

Francisco on October 17th, 1989. It was

America’s second strongest earthquake

and about 100 people were killed.

Paragraph 2 It happened in the evening as people were

traveling home.

Paragraph 2

A wide and busy road which was built like a bridge over another road fell onto the one below.

Paragraph 2Many people were killed in their cars, but a

few lucky ones were not hurt.

Paragraph 3 Luckily the

1989 earthquake did not happen in the center of town but about 50 kilometers away. In one part of town a great many buildings were destroyed.

Paragraph 3 These

buildings were over 50 years old, so they were not strong enough.

Paragraph 3There were a

lot of fires all over the city. The electricity was cut off for several days too.

Paragraph 4

•San Francisco

Pacific plate

American plateEurasian plate

India plate

African

plate

Antarctic plate

Paragraph 4

•Pacific plate

North

South

WestEast

↖

American plate

Why do earthquakes happen? Scientists explain that the outside of the earth is made of a number of different plates. At San Francisco the Pacific plate which is moving towards the northwest meets the North American plate. The Pacific Plate is moving very slowly — at 5.3 centimeters a year.

Paragraph 4

Sometimes these two plates stop and do not move for years. Then Suddenly, they jump and an earthquake is felt. As a result of the movement of these plates, west America near the sea has always been a bad place for earthquakes. When the 1906 earthquake happened, the Pacific plate jumped 5-6 meters to the north.

ContinentOceanic plate★ ★

Fill in formMain Idea Details

The outside of the earth is made of

Two of the earth’s plates which join

together suddenly .

Causes of Earth-quakes

six different plates.

jump

Para. 4

Paragraph 5 We cannot stop earthquakes, but we can

do things to make sure they do not destroy whole cities. First, it is not a good idea to build houses along the lines where two of the earth’s plates join together. Second, if you think there may be an earthquake, it is better to build houses on rock not on sand. Third, you must make the houses as strong as possible. Weak buildings will fall down in an earthquake, but strong ones may stay up.

Fill in formMain Idea Details

Don’t build houses

Build houses on not on .

Make the houses

along the lines where two of the earth’s plates join together.

rock sand

as strong as possible.

Struggles

against

Earth-quakes

Para. 5

Fill in formMain Idea Details

Many more people in and around San

Francisco may .

Many more houses and buildings will

die

be destroyed.Para. 6

“The Big

One ”

Paragraph 6 Scientists are

afraid that one day an even bigger earthquake will hit the area around San Francisco. They call it “ The big one”. However, people today are still building more houses.

Paragraph 6 The population in

And around San Francisco is now ten times more than it was in 1906. This means that if There is another big earthquake, a great many houses and buildings will be destroyed.

Fill in formMain Idea Details

It happened at

was destroyed.

were

burnt.

people lost their homes.

people died.

5:13 on the morning of April 18th, 1906.

A great part of the city 1906 Earthquake

A large number of buildings

250,000

700

The

Para. 1

Fill in form

Main Idea Details

It happened

It was America’s

Many people were in their

Buildings and a lot of

fires

The electricity

on the evening of October 17th,1989.

second strongest earthquake.

cars.

were destroyed

happened.was cut off for several days too.

The1989Earthquake

killedPara. 2-3

Fill in formMain Idea Details

The outside of the earth is made of

Two of the earth’s plates which join

together suddenly .

Causes of earth-quakes

six different plates.

jumpPara. 4

Fill in formMain Idea Details

Don’t build houses

Build houses on not on .

Make the houses

along the lines where two of the earth’s plates join together.

rock sand

as strong as possible.

Struggles

against

earth-quakes

Para. 5

Fill in formMain Idea Details

“The Big

One ”

Many more people in and around San

Francisco may .

Many more houses and buildings will

die

be destroyed.Para. 6

T or F1. The earthquake is so terrible that who

le cities would be destroyed if a strong earthquake happened. T

F

F

2. The number of deaths in 1989

earthquake is larger than it was

in 1906.

3. It will probably be more dangerous

if the earthquake happens in the

day not in the evening.

T or F4. If one of the two plates begins moving, the earthquake will be felt. F

T

F

5. The Pacific plate moving towards the

northwest sometimes stops moving

for quite a long time.

6. We can do something to prevent the

earthquake from happening.

T or F7. The lines where two of the earth’s

plates join together are always

dangerous places for earthquakes.

T

T

8. The new earthquake may cause

greater damage if we build a great

many houses on the ground ever

hit by earthquakes.

Fill in Blanks The earth is a little blue

planet. There always happen

some disasters (灾祸 ) such

as floods, volcanoes (火山 )，and earthquakes …

Fill in Blanks In 1976, the strong earthquake happe

ned in Tangshan. Millions of people homes and a large of buildings were destroyed.

lost number

Fill in Blanks On the morning of

September 21th, 1999,

another strong earthquake

Taiwan province.

It happened in the of

Taiwan province. About 2000

people died in the earthquake.

number of people

who were hurt reached

as as 4005.

hit / shook

center

The

many

Fill in Blanks A lot of cheap houses were destroyed.

Only a few strong stayed luckily. The city’s electricity supply was cut at once.

uponesoff

Fill in Blanks explained the Taiwan earthqu

ake happened because the Pacific plate and the Eurasian plate . In the past, the

earthquake

happened

in the ocean,

but this time

it moved to the

ground. So it

caused a worse result.

Scientists

jumped

Homework Homework

Do Exx. 1, 2 on page 89. Read part 3 on page 28 and

write about an earthquake in China