Name and surname: .....................................................................................................................................
Form: ...................................................................... Date:
WorksheetUNIT
8
A Fill in the blanks:
The atmosphere has …………………………………. layers. The highest layer is the
…………………………………….., where the aurora borealis takes place. The next layer is the
………………. and there meteorites disintegrate, producing what are called ………………………
……………………… The stratosphere is a layer inside of which there is an area called the
………………………………, where a gas ,…………………………………………, is abundant. This gas is
of vital importance because it absorbs the ………………………………. rays of the Sun, which are
harmful. The inner layer is the ………………………………………….., where
………………………………………… phenomena take place and where all living beings of the Earth can
be found.
B How many litres of oxygen are there in a room which has 9 square metres of surface and is 2 m high?
Explain your calculations.
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C Fill in the blanks in the picture. Write in the arrows (I, II, II, IV) the name of the corresponding layer of
the atmosphere; in the blanks on the left (V, VI, VII) the altitude of each of them; and on the blanks on
the right (VIII, IX, X) the name of the limit between each layer.
D Copy and complete the sentences with the correct words in your exercise book.
a)
b)
c)
d)
The ionosphere reflects/ absorbs………………. Radio waves back to Earth.
The stratosphere contains horizontal/ vertical……………… layers of gas.
The ozone layer retains/ protects…………………us from harmful solar radiation.
The layer furthest/ nearest……………….to the Earth is the troposphere.
E Did you know?
On 14 October 2012, Felix Baumgartner did the highest ever skydive. He jumped from a balloon at
an altitude of 39 km. During the jump he travelled faster than the speed of sound. When he did the
jump, Baumgartner had to wear a special space suit to protect him.
a) The International Space Station orbits the Earth at an altitude of about 350 km. Which layer
of the atmosphere is it in?
b) Which layers did Felix Baumgartner jump through?
c) Why did Baumgartner wear a space suit? Write down all of the correct answers.
I)
It made him go faster
II)
It protected him from extreme temperatures
III)
It kept his body at the right pressure
IV)
Because he went into outer space.