It takes up to 1000 years for a stalactite to grow 1/2 inch.

What are hemispheres?

A hemisphere is half of the globe. All countries north of the Equator are in the Northern Hemisphere, while all countries south of the Equator are in the Southern Hemisphere. The Northern Hemisphere includes Asia, North America and Europe while the Southern Hemisphere includes Australia, Southern Africa and most of South America.

Did you know?

Sound travels about 4 times faster in water than in air.

Diamonds are the hardest substance known to man.

There is a high and low tide because of our moon and the Sun.

The moon is 27% the size of the Earth.

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