Half of a sphere or ball. People use the word to describe one half of the earth. The Hemisphere earth can be divided into the northern and southern hemispheres. Imaginary line around the middle of the Earth at an equal distance from the North Equator and South Pole. North and South Pole The places on earth which are the farthest north and the farthest south. The area of the world around the North Pole. It is extremely cold and there is very The Arctic little light in winter and very little darkness in summer. The Antarctic The area of the world around the South Pole. The region of the world around the equator. The part of the earth where the sun Tropics shines directly downwards. Tropic of Cancer An imaginary line which marks the northern edge of the tropics. 23.5° north Tropic of Capricorn An imaginary line which marks the southern edge of the tropics. 23.5° south Latitude Indicates the distance north or south of the equator. Longitude Indicates the distance to the east or west of the prime meridian. The line of longitude at zero degrees from which all other lines of longitude are Prime Meridian calculated. It passes through Greenwich, England. Normal body temperature is 36.5—37.5 °C. Hypothermia affects the body when its temperature drops below 35°C. Hypothermia is a potentially dangerous drop in body temperature, usually caused by prolonged exposure to cold temperatures You can use the sun to navigate if you are lost. The sun rises in the east and sets in the west. At midday, the sun is to the south (northern hemisphere). The six key survival skills are—1) Finding and purifying water 2) Finding / building shelter 3) Starting a fire 4) Navigating back to safety 5) Signalling to help rescuers find you 6) Finding food .