Frostbite results when the body is exposed to extreme cold. It usually occurs in the ears, fingers, nose, and toes. The immediate effect of frostbite is that the frostbitten area becomes whitish...
My skin covers me
My skin is tough. I scratch it and scrub it and scrape it and rub it. Sometimes I bruise it or cut it. But it always grows back. Tiny bits of color are in my skin. They make my skin black or brown...
Frozen food
Fresh foods keep their color and flavor for only a short time. You have to eat them soon after they are bought. Is your piece of apple pie homemade, or did it come frozen? Sometimes it's hard to...
How does a picnic cooler work?
What kinds of food can you take on a picnic? Any kinds you like---hot baked beans, steaming cocoa, chilled potato salad, or ice- cold lemonade. You can put the food in a picnic cooler, or in special...
Moving molecules
Here is a way to show that hot and cold molecules move at different speeds. A hot-and-cold contest Materials - bowls (2, large) - food coloring - medicine dropper - pan (bigger than bowl) -...
The Christmas trees’ home
In the northern parts of the world, winters are long and cold and summers are cool. This is where many of the trees people use as Christmas trees live. There are huge forests of spruce trees, fir...
Hiding from winter
Amphibians are cold-blooded. Their bodies are just about as warm or as cold as the air or water around them. So when winter comes, and the days get colder, an amphibian's body gets colder, too. The...
Playing hide and seek with the sun
It is night in a desert. A small lizard lies covered with sand. Only its head sticks out. It is using the sand like a blanket to keep its body warm during the cool night. When the sun comes up,...
Icy daggers
It's a bitterly cold winter day. Snow lies in a great white sheet on the ground and on the roof of your house. The roof is warm from the heat inside the house, so the snow on the roof is slowly...
Sparkly pictures on your window
The door was shut, as doors should be Before you went to bed last night; Yet Jack Frost has got in, you see, And left your window silver white. He must have waited till you slept; And not a...
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