Class Book 4 - page 21

19
A C T I V I T I E S
2
15
Sing the
Atmosphere
song.
3
With your partner, mime the atmospheric conditions.
4
T
h
i
n
k
!
Copy and complete the sentences using the words in the box.
The atmosphere has three
. They surround the
. The first is the
, which
contains the
we need to
. In the third layer there are few gases and no one can live
here. The second layer is called the
. This contains the
which protects us from the
Sun’s harmful rays.
5
16
Q
U
Z
I
Check your learning.
rainbow  rain  snow  thunder  lightning  hail
ozone layer  troposphere  layers  living things
As we have seen, the troposphere is where weather occurs. Here we can see:
thunderstorms
with
lightning
,
rainbows
and
precipitation
. These are all atmospheric conditions.
Lightning happens when frozen particles
collide
with one another in clouds and create an
electrical
discharge
.
Thunder
is the noise made by lightning.
A rainbow is an arc of the colours of the
spectrum
. It’s produced when sunlight shines through the water
droplets of clouds and is
refracted
.
Precipitation is the water that condenses in the clouds. It can be
rain
,
snow
or
hail
.
thunderstorm
rainbow
precipitation
1...,11,12,13,14,15,16,17,18,19,20 22,23,24,25,26,27,28,29,30,31,...60
Powered by FlippingBook