高中英语人教版 (2019)必修 第一册Unit 4 Natural disasters课文配套ppt课件

这是一份高中英语人教版 (2019)必修 第一册Unit 4 Natural disasters课文配套ppt课件，共25页。PPT课件主要包含了Tsunami，cause，where，path，leave，higher，passed，Homework 等内容，欢迎下载使用。

Learning bjectives
In this class, yu will cllect infrmatin abut the cause and the damage f a tsunami;learn abut scientists’ effrts t predict a tsunami.
What natural disaster is shwn in the pictures?
What is a tsunami?
What causes it?
What is its damage?
BEFORE YOU WATCH
tectnic plates地壳板块
expand v. t becme bigger in size 扩大
WHILE YOU WATCH
WHILE YOU WATCH
There are few warning signs just befre a tsunami hits.A tsunami breaks just like an rdinary wave but is bigger.Scientists at the Pacific Tsunami Warning Center mnitr the earth’s mvements 24 hurs a day in rder t track tsunamis.
There are few warning signs just befre a tsunami hits.
A tsunami breaks just like an rdinary wave but is bigger.
Scientists at the Pacific Tsunami Warning Center mnitr the earth’s mvements 24 hurs a day in rder t track tsunamis.
An earthquake ccurs when plates belw the earth’s surface push tgether / pull apart.
Tsunami waves deep at sea mve fast and rise nly a few/ hundreds f feet.
As these killer waves enter shallw waters, their speed is reduced/ raised.
Mst tsunami damage is caused when the waves cme in frm/ mve back ut t the sea.
What have yu learnt abut tsunamis?
What causes a tsunami?
What is the damage f a tsunami?
What d scientists d in predicting a tsunami?
If they discver a quake big enugh t _______ a tsunami, the scientists try t find ut ______ the wave will head and warn peple in its _____.
Fill in the blanks.
Their advice is simple: _______ the castal areas and mve t _______ grund. Wait fr news that the danger has _______.
AFTER YOU WATCH
What kind f help d yu think peple wh have suffered frm a tsunami need?
When peple are injured,
medical team shuld be sent there.