This document is about the hydrosphere and atmosphere. It contains questions about the layers of water on Earth, the movement of water in oceans, the composition of air and layers of the atmosphere. It also asks students to explain reasons for the importance of the atmosphere and factors determining climate. Finally, it provides rainfall and temperature data to create a climatogram for an area.

1. UNIT 9
EV
SCIENCE
Name: ……………..………………………………………………………………………………..……...............
Class: …………………………………………………..……….…….. Date: ……………..……….……………
1 Complete these phrases.
The _______________ is the layer formed by all the water of the Earth, except
the _______________ _______________ in the atmosphere.
The _____________ is the layer of air surrounding the geosphere and the
_____________.
2 What are continental waters?
3 Complete the missing information in this table about the movement of the water from
seas and oceans.
MOVEMENTS ARE…
Waves
Masses of water moving from one place
to the other within the ocean.
Tides
4 Indicate whether the following statements are true (T) or false (F).
The hydrosphere provides the air that living things need.
Most of the Earth's water is fresh water so we don’t have to be careful
how much we use.
5 What is air? Describe its composition.

2. 6 Write the names of the layers of the atmosphere that are marked in the picture.
7 What are atmospheric phenomena? Name three examples.
8 Explain three reasons why the atmosphere is important.
9 Explain the factors determining the climate of an area.
10Draw a climatogram of an area with the following rainfall and temperature data. Use
different colours for rainfall and temperatures.
MORATALAZ 2012 J F M A M J
Rainfall (mm) 40 50 30 70 20 10
Temp.
10 15 20 25 25 30
(°C)
J A S O N D
Rainfall (mm) 10 5 20 50 60 50
Temp.
35 30 25 20 10 10
(°C)