SCI7 LESSON#1 4TH-Q

• Earth – the third planet from the sun
• the only known planet to have the capability of supporting life.
• the planet is formed at about 4.5 billion years ago.
• The Earth is an oblate spheroid
• Models of the Earth

  Globe & World Map
• Globe - a 3dimensional spherical model of the Earth
• World Map - a 2 dimensional representation of the surface of the Earth
• Latitude (also known as parallels)
• Latitude Starts at 0 degree going up or down in 15 degree increments
• Equator- the line that divides the map,

  separating the Northern Hemisphere and the

  southern Hemisphere.

  0o measure
• Longitude (also known as meridians)
• lines run from top to bottom — longitude
• PRIME MERIDIAN - the line that bisects the globe in half, separating the

  east and west
• The prime meridian Agreed to be in Greenwich, London United Kingdom

  0o measure
• International Date Line- located

  halfway around the world from the prime meridian or about 180° east (or west) of Greenwich, London, UK

  - the reference point of time zones
• Tropics – latitudes that correspond to a specific region.
• Arctic circle – the topmost part of the globe

  where the North pole is located
• Antarctic Circle – the Bottommost part of the

  globe where the South Pole is located
• Northern hemisphere - half of the Earth that is north of the Equator
• Southern hemisphere - half of the Earth which is the south of the equator
• Eastern hemisphere - half of the Earth that is east of the Prime Meridian
• Western Hemisphere - half of the Earth that is west of the prime meridian
• How to find coordinates?

  Latitude is read first. Longitude is read second.
• the image is latitude

  
• The image is Longitude

  
• The image is equator

  
• The image is prime meridian

  
• The image is an example of International Date Line

  
• q1 who is Almario in Portia, his Crush cakes