Reading Part 4

What does the passage mainly discuss?

• Tsunami in Japan

• Tsunami in Hawaii

• What tsunami is

• The wavelength of tsunami

What does the word that (line 2) refer to?

• tsunami

• harbor wave

• abnormal sea wave

• catastrophic damage

The following are causes of tsunami, EXCEPT_____.

• undersea earthquake

• undersea landslide

• volcano eruption

• the force of an asteroid bumping into the ocean

The word catastrophic (line 2) probably means _____.

• disastrous

• auspicious

• save

• fortunate

Where in the passage does the author explain the process of tsunami caused by undersea earthquake?

• Lines 3 – 4

• Lines 5

• Lines 5 – 7

• Lines 7 – 9

Where do most tsunami come from?

• a circle in the Hawaiian Islands

• a zone surrounding the Hawaiian Islands

• a circle in the Pacific Ocean

• a zone surrounding the Pacific Ocean

The word which (line 8) refers to _______.

• a zone of volcanoes

• seismic activity

• Pacific Ocean

• 40 tsunamis

These are the characteristics of tsunami, EXCEPT ________.

• Its wavelengths are 100 to 200 kms.

• It may move hundreds of kilometers across the deep ocean.

• Its speeds can reach about 725 to 800 km/h.

• In the deep ocean, it has an enormous height.

The words notice (line 16) can best be replaced by____.

• note

• record

• feel

• verify

What are the factors influencing the form of tsunami?

• the speed of the tide

• the depth of the sea

• the width of the sea floor

• the form of the sea floor