Inventors and Discoveries

Inventors and Discoveries — page 3
Fire Now We’re Cooking Fire has always been important to humans We use it for warmth We cook with it Early humans unable to make their own fire noticed that lightning set fire to dry grass and brush They learned to gather burning sticks and embers and use them to start their own campfires Then people used wood to start fires The larger piece of wood would have a small dip in the center A person would set the larger piece on the ground and place dry grass in the dip Then he would put one end of the second stick in the dip and rotate it rapidly between his palms After awhile the friction between the sticks would raise the temperature enough to ignite the dry grass Men learned to make fire by rubbing two pieces of wood together 6