Science 4th Quarter

• Geographic coordinate system - enables any place in the world to be located using its latitude and longitude.
• Equator - separates the northern and southern hemispheres.
• Latitude - is the position relative to the equator, referred to as horizontal lines specifying the north-south position.
• Longitude - specifies the east-west position measured from the prime meridian.
• Lithosphere - is divided into seven continential landmasses.
• Celestial navigation - is the action of finding one's way by observing the sun, moon, and stars.
• Equator or the prime parallel - passes horizontally through the center of the Earth, dividing Earth into northern and southern hemispheres.
• 5* to 21* north latitude and 114* to 127* east longitude - This is the absolute location of the Philippines in the world map.
• Prime meridian - the vertical line that passes through Greenwich, England, dividing Earth into western and eastern hemispheres.
• The equator and the prime meridian are referred to as the - Great circles
• Latitude - the north or south location of any place on Earth.
• Latitudes are marked by imaginary lines called - Parallels of latitude.
• Longitudes - the west or east location of any place on Earth.
• Longitudes are marked by imaginary lines called - Meridians of longitude.
• Distances on earth are expressed in angular measurement, so the unit called - degree - is used.
• One degree of a latitude or longitude is equal to - 70 mi (112km).
• Each degree is divided into equal parts called - minutes
• A minute of latitude or longitude is equal to - 70/60 mi, or 1.1667 mi (also called a nautical mile)
• A minute is divided into equal parts called seconds.
• Continents are large landmasses that make up the earth surface.
• Asia is conposed of about 48 countries.
• Africa is the second largest continent in the world. It consists of 54 countries and is home to 1.2 billion people.
• North america is the third largest continent in the world by land area and the fourth largest continent in population.
• South america is the fourth largest continent in terms of land area, and is fifth in terms of population.
• Europe is the sixth largest continent by land area and the third most populated continent in the world after Asia and Africa.
• Australia is the world's smallest contitent by total land area. Because of its size and location, it is also called and "island continent"