9
A C T I V I T I E S
2
8
Sing
The Earth moves
song.
3
Copy and complete the sentences in your notebook.
a)
The Earth spins on its own
. We call this movement
.
b)
is the movement that causes the seasons.
c)
When it’s summer in the Southern Hemisphere, it’s
in the Northern Hemisphere.
d)
is the movement that causes day and night.
4
Test a partner. Give clues for rotation or revolution.
5
Find out what time it is in these places when it’s 5.00 pm in Madrid. Is it day or night?
a)
Sydney, Australia
d)
Bangkok, Thailand
b)
Rio de Janeiro, Brazil
e)
Cape Town, South Africa
c)
Tokyo, Japan
f)
Los Angeles, United States
6
9
Q
U
Z
I
Check your learning.
Rotation is the movement of the Earth on its own axis. It spins around. The Earth takes
24
hours to make
a complete rotation. This causes
day
and
night
. It’s day in the parts of the Earth where the Sun is shining.
It’s night in the parts of the Earth where the Sun isn’t shining.
anticlockwise
rotation
Earth’s axis
day
night
Why do we have
an extra day once
every four years?
G
E
O
-
Q
U
E
S
T
It’s winter in the Northern Hemisphere ... It’s night...
