Rotational movement is the Earth’s revolution around an imaginary axis towards the __________.The axis of rotation is tilted with respect to the orbital plane on which the Earth moves around the ____________The rotational movement causes the succession of ___________ and ____________which is the reason for the difference in time throughout the Earth’s time zones. As the Earth is spherical, only the part exposed to the sun is ____________.

As it turns around itself, the illuminated _____________is not always the same. Thus, the illuminated portion (day) and the dark portion (night) are constantly changing.

The main consequences of the Earth’s rotation are:_________ and night and uniform amount of __________ on Earth.

Orbital movement: Is that which the Earth makes around the Sun, having an elliptic orbit of 93 million km, a speed of 28.9 km per second.

In this movement, ________________ days and 6 hours are invested. These 6 hours that accumulate over each year, after 4, add up to 24 hours (one day). So every four years, there is one that has _________days, which is called a __________year. 

The plane that determines the orbit of the Earth is called the ____________orbit and it is the maximum the Earth may move in its rotation around the Sun.

Orbital movement causes the four __________________The seasons are determined by the tilt of the Earth’s ________________with respect to the elliptical. According to the position of the Earth with respect to the Sun, some areas on Earth receive more solar radiation than others.

The seasons alternate according to the proximity of each _________________ to the Earth. When the Northern Hemisphere is far from the Sun, it will be _________________while the Southern Hemisphere is closer to the Sun and there it will be summer.

There are four key positions of orbital movement: Spring and Autumn (equinox) and Summer and Winter (Solstice).

During the Spring __________ (21st of March) in the Northern Hemisphere it is Spring and in the Southern Hemisphere it is Autumn.

During the Autumn Equinox (23rd of September) in the Northern Hemisphere it is Autumn and in the Southern Hemisphere it is ____________________

During the Summer Solstice (21st of June) in the Northern Hemisphere it is ___________ and in the Southern Hemisphere it is ___________.

Another effect of the tilt of the Earth’s ______________ is the difference in the length of day and __________, according to whether it is _________________] or Winter.

The parallels are imaginary circles _______________ to the Earth’s axis. As their name indicates, they are parallel to each other. They measure _____________degrees. 

The _____________ is the largest of the parallels and divides the Earth into two ________________: Northern and Southern.They have the following CHARACTERISTICS:-They are parallel to each other-Their number is ________________.-They have the direction of East-West.-They are divided by the _______________ at a right angle. -They have a circumference of __________________degrees.

PRINCIPAL PARALLELS:In the Northern Hemisphere: In the Southern Hemisphere:

The Tropic of ________________: 23° 27 'N. The Tropic of __________________: 23 º 27 'S.The __________________Circle: 66 ° 33 'N. The _____________________Circle: 66 ° 33 'S.

1. The meridians are maximum imaginary semicircles drawn from the North Pole to the South Pole. They measure ___________________degrees.

The reference meridian (0 degrees) is the ___________________, a name that comes from an astrological observatory located near _______(London).

CHARACTERISTICS The number of meridians is ___________________.

Their _____________________is N-S.

Their point of maximum separation at the __________________and they converge at the poles.

They divide parallels in _________________ angles.

The arch of the parallels has a value of _____________________degrees.

1. Learn about the position of the Earth in the solar system, its shape and size.2. Describe the conditions which make life on Earth possible.3. Define the movements of rotation and revolution and explain their consequences.4. Recognise the main parallels and meridians on the Earth.5. Define the terms latitude and longitude and locate the position of a point on the Earth’s surface

using geographic coordinates.6. Understand the causes of the different time zones in different parts of the Earth.7. Recognise the different cartographic projections.8. Explain what maps are and how they are used to represent the Earth’s surface.9. Interpret the scale and legend on maps.10. Use appropriately the specific geography vocabulary of the unit.