6 This is our planet, the EARTH Earth is the third planet in our Solar SystemThat, in turn, is located in the galaxy “Milky Way”The Earth is 12,756 km in diameterIt is 1.5 million km from the SunPhoto of the Earth: cnice
7 THE EARTH’S MOTIONS Earth rotation: The Earth moves in two different ways:It spins around its own axis every 24 hoursEarth rotationEarth revolutionThe spinning gives rise to night and dayPhoto of the Earth: cnice
8 THE EARTH’S MOTIONS Earth revolution: It occurs on a plane called the “ecliptic plane”It revolves around the Sun, each revolution having a period of a year.The rotation axis has an angle of 23.5 degrees in relation to the perpendicular axis of the ecliptic plane.Its orbit has an elliptical shape and the Sun is placed in one of the two focuses.23.5ºPhoto of the Earth: cnice
9 SEASONSIn our hemisphere each season starts on…As a consequence of revolution and this inclination, the Earth has seasons.Spring Equinox: 21st MarchWinter Solstice:22nd DecemberSummer Solstice:21st JuneAutumn Equinox: 22nd SeptemberPhoto of the Earth: cnice
10 OUR PLANET HAS FOUR LAYERS… It is the rocky part of the EarthIt is the aqueous layer. It’s made up of liquid and solid waterIt is the gaseous layer that surrounds the Earth. Its made up of airATMOSPHEREIt is all living thingsHYDROSPHEREBIOSPHEREGEOSPHEREPhoto of the Earth: cnice
11 CRUST UPPER MANTLE LOWER MANTLE OUTER CORE INNER CORE The crust is the first rocky layer.It’s made up of granite and basaltThe core is the deepest layer. It’s made up of ironThe mantle is located below the crust, between 35 and 2,900 kmPhoto of the Earth: cnice
12 The Moon is the Earth’s Satellite The Moon is the only satellite of the Earth.Main CharacteristicsIt is 3,760 km in diameterIt is located 384,400 km from the EarthPhoto of the Moon: cnice
13 The moon is always addressing us with the SAME FACE The Moon’s MotionsIt has TWO different movements:1. ROTATION:with a 28-day period2. REVOLUTION:also with a 28-day periodAs a consequence of these synchronized movements…The moon is always addressing us with the SAME FACEPhoto of the Moon: cnice
14 The Moon seen from Earth: Seen from Earth, the Moon’s look varies according to its position in the orbit…Photo of the Moon: cnice
15 This way, LUNAR PHASES are distinguished: The Moon seen from Earth:This way, LUNAR PHASES are distinguished:THIRD QUARTER MoonNEW MoonFULL MoonFIRST QUARTER Moon
16 ECLIPSESAn eclipse occurs when the Earth, the Moon and the Sun form a line:If the Moon comes into the Earth’s shade, a lunar eclipse takes place.If the Earth comes into the Moon’s shade, a solar eclipse takes place.
17 SOLAR ECLIPSE A solar eclipse occurs when the Moon is in the middle. This means that the Moon has to be a New Moon.NEW Moon
18 LUNAR ECLIPSE A lunar eclipse occurs when the Earth is in the middle. This means that the Moon has to be a Full Moon.FULL Moon
19 Why aren’t there eclipses every month? NEW MoonFULL Moon
20 This is the ecliptic plane (where the Earth revolves around the Sun) 5ºHowever, the Moon revolves around the Earth on a plane that forms a 5º angle with this plane…… This is why we only can get an ECLIPSE:- When the Moon is on the ecliptic plane- And, at the same time, the Earth, the Moon and the Sun form a line.
21 A LUNAR ECLIPSE occurs. A SOLAR ECLIPSE occurs. If the EARTH is in the middle…If the MOON is in the middle…A LUNAR ECLIPSE occurs.A SOLAR ECLIPSE occurs.
22 The Moon is between the Earth and the Sun (NEW Moon) The MOON is on the ECLIPTIC PLANEEcliptic planeA SOLAR ECLIPSE occurs.
23 The Earth is between the Moon and the Sun (FULL Moon) The MOON is on the ECLIPTIC PLANEEcliptic planeA LUNAR ECLIPSE occurs.
24 Although the Moon is located on the ecliptic plane… The SUN, the EARTH and the MOON DO NOT FORM A LINEEcliptic planeThere IS NOT an ECLIPSE
25 Although the Moon is located BETWEEN The Earth and the Sun, a New Moon… …or it is a Full Moon……The Moon IS NOT on the ECLIPTIC PLANEThere IS NOT an ECLIPSE