Page 6 - SDT 8. Sınıf İNG

Answer the questions (17 - 18) according to the passage below.
17. Volcanoes --------------------------- .
A) can be seen only on Earth
B) erupt when there is enough pressure C) are not mountains
D) are only in Africa
18. The passage gives information about --------------------------- . A) how to survive a volcanic eruption
B) what a volcano is
C) where to find active volcanoes
D) why there are volcanoes on Mars
19 - 20: For these questions choose the best option to fill in the blanks.
19. If people don’t stop wasting water, --------------------------- . A) there will be a serious drought in the future B) the air pollution will be a problem
C) natural disasters happened in the past
D) they can build a colony in Mars
A volcano is a mountain where lava comes
from the ground. Most volcanoes have a
crater at the top. When a volcano is active,
materials come out of it. The materials
include lava, steam, gases, ash and broken
rock pieces. When there is enough pressure,
it causes the volcano to erupt. The pressure
blows off the top of the volcano. The
magma comes out, sometimes quickly and
sometimes slowly. Magma and lava are the
same thing, but in different places. When it
is underground we call it magma, but when
it erupts to the surface we call it lava. On
Earth, we have about 1500 volcanoes. They
are all over the world, and in every continent.
Volcanoes are found on planets other than
Earth, too. An example is Olympus Mons on
Mars. RNEKTİ
SDT - 8 6 SINIF 8
20. To solve the problem of petrol shortage and air pollution, --------------------------- .
A) we must produce more cars
B) we should use public transport
C) we must keep the school garden clean D) we should cover our faces and head
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