Pookie's Cool Facts archive.

Filter  Item Title North America is the oldest continent on the Earth. North America broke away from Europe about 100 million years ago. Earthquakes can begin as much as 435 mi (700 km) below the Earth's surface. The heart is a remarkable double pump, with two pumping chambers, the left and the right ventricles. Capillaries are the smallest vessels, only visible under a microscope. In old age the artery walls can become very stiff. As adults grow older, their bodies begin to deteriorate. Pollen can often cause allergies like hayfever. Microphones pick up sound wave and turn them into electrical signals. Pierre and Marie Curie were the scientist who discovered the nature of radioactivity. Black panthers are leopards with back pigmentation. Snow leopards, which inhabit the mountains of Central Asia, have never been know to roar. The polar bear is the only bear which is almost exclusively a meat-eater. The donkey evolved from African ass ancestors, and is capable of carrying heavy loads. Strong and healthy new born lambs are on their feet within minutes. The giraffe is the world's tallest animal. The South American capybara is the world's largest roedent. Many tropical bats, which eat pollen and nectar are important pollinators of plants. The celestial sphere is like a great blue ball dotted with stars, with the Earth in the middle. Mars' surface is cracked by a valley called the Vallis Marineris. Most of the nine planets in our Solar System have been known since ancient times. European and Asian reindeer have mainly gray topcoats, with fawn legs. Your vulnerable eyes are protected by tears which wash away germs. Doctors can get clues to illnesses by testing what substances there are in urine. The ancient Greeks realized that the Earth is a globe. The lithosphere is the upper, rigid layer of the Earth. Paleontologists tell the age of a fossil from the rock layer in which it is found. Laser light is a bright artificial light. It creates an intense beam that can punch a hole in steel. Steel ships float because although stell is denser than water, their hulls are full of air. Energy is measured in joules (J). The rhino has one or two horns, depending on species, perched on a tough area of the skull. A koala weighs less than 0.2 oz at birth, and remains in its mother's pouch for 7 months. Hippos are probably Africa's most dangerous animal. Horses have a very strong homing instincts. The more of the Sun's energy there is in the air, the windier it is. The more of the Sun's energy there is in the air, the windier it is. Pluto is tiny in comparison to the Earth, which is why it was so hard to find. Pluto was the last of all the planets to be discovered. Manatees and dugongs, known as sirenian, are the only vegetarian sea mammals in the world. The chipmunk is one of the most common small mammals in North America. The Wright brothers, Orville and Wilbur, built the world's first successful plane, the Flyer. The biggest and strongest steam locomotives ever were nicknamed "Big Boy". Vaccination is also called immunization, it builds up your resistance or immunity to a disease. The Apollo 13 mission to the Moon suffered near tragedy when an explosion ripped through one module. All river channels tend to wind, and the nearer they are to sea level, the more they wind. As temperature rises, solids melt to become liquids. Glass is one of the most versatile materials, transparent, easily molded, and resistant to weather. Velociraptor lived 75-70 million years ago, in what is now the barren scrub and desert of Mongolia. The arms and hands of Tyrannosaurus were so small that they could not pass food to its mouth. If you sweat a lot during excersice, you need to make up for all the water you have lost by drinking   << Start < Prev 1 2 3 4 5 6 7 8 9 10 Next > End >> Results 151 - 200 of 772

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