Tuesday, June 10, 2008

Bizarre Science facts

Did you know?

1) Do you know what colour is the sky on Mars?
Ans-The sky on Mars is pinkish-orange. Mars is covered with a layer of orange dust called iron oxide. Wind catches the dust, forming during dust storms, and the dust colors the Martian sky.

2)Why do some potato chips have green edges?
Ans-Potatoes, like most other plants, contain a chemical called chlorophyll. Chlorophyll helps plants turn sunlight into energy and makes them green. Usually potatoes grow underground, but sometimes they can grow near the top of the soil. If the sun shines on a potato, it will begin to produce chlorophyll and turn a little green.

3)What rock floats in water?
Ans-Pumice, a rock that comes from volcanoes. Pumice can float because it is full of holes that hold air and make the rock buoyant.


4)What's the coolest place on Earth?
Ans-Plateau station, Antarctica—which holds the record as the coldest place on the planet. The average annual temperature there is minus -89°C.

5) What's the hottest place on Earth?
Ans-Dallol, Ethiopia holds the record for the hottest place on Earth. The average annual temperature there is 34.4°C. That's almost human body temperature!

6)Which resource can you live without longer—food or sleep?
Ans-Food. You can live for only about ten days without sleep, but you can survive for several weeks without food.

7)Which animal sleeps for most of its life?
Ans-The Western European hedgehog loves to sleep. In the summer it sleeps about 18 hours a day, waking only at night to eat. During the winter it sleeps constantly, curling into a prickly ball to protect itself from curious animals.

8)What is the oldest living thing on Earth?
Ans-The oldest living thing is a bristlecone pine tree that is more than 4,600 years old. It lives in the White Mountains of California.

9)What kind of bird can fly upside down?
Ans-The tiny bird called a hummingbird can fly forward, backward, and even upside down! Hummingbirds are the smallest kind of bird, and they eat nectar from flowers. Their wings move so quickly that they can hardly been seen, and the fast flapping makes a soft noise like a hum.

10) What kind of bird can fly when it is asleep?
Ans-The albatross can fly while it sleeps. These large birds spend a lot of time flying over the ocean looking for food. If an albatross cannot find land or a ship where it can stop to rest when tired, the bird can sleep while it flies at about 40 kilometers per hour.

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