高一英语人教版Unit 4 Natural Disasters Video Time任务单
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Unit 4 Natural Disasters Video Time任务单
【学习任务一】
Look at the pictures, and answer the questions.
Q1. What natural disaster is shown in the pictures?
Q2. What is a tsunami?
Q3. What causes it?
Q4. What is its damage?
【学习任务二】
BEFORE YOU W ATCH
Read the sentences about the formation and effects of tsunamis. Then match each sentence
with the correct picture.
A.Tectonic plates push together.
B. A series of waves expands in all directions.
C.Whole sections of cities are destroyed.
【学习任务三】
WHILE YOU WA TCH
Decide whether the statements are true (T) or false (F).
1.There are few warning signs just before a tsunami hits.
2. A tsunami breaks just like an ordinary wave but is bigger.
3.Scientists at the Pacific Tsunami Warning Center monitor the earth’s movements
24 hours a day in order to track tsunamis.
【学习任务四】
WHILE YOU WA TCH
Circle the correct word(s) in each sentence.
1.An earthquake occurs when plates below the earth’s surface push together/ pull
apart.
2.Tsunami waves deep at sea move fast and rise only a few / hundreds of feet.
3.As these killer waves enter shallow waters, their speed is reduced/ raised.
4.Most tsunami damage is caused when the waves come in from / move back out to
the sea.
【学习任务五】
WHILE YOU WA TCH
Answer the questions below.
•What have you learnt about tsunamis?
•What is a tsunami?。