Why are we losing ground water?

Water is pumped from aquifers around the world for irrigation, industrial, and household needs. Aquifers do not refill as rapidly as water is being pumped out, so in many areas there is a danger that some aquifers may disappear altogether.

Will there be another ice age?

Yes, eventually the Earth will again cool and ice will cover land at higher latitudes and elevations. It may be a hundred years from now or it may be thousands of years away, but the Earth's climate is always slowly changing.

What are ice ages?

Throughout the life of the planet, the climate has warmed and cooled many times. During the cooling periods, ice ages have occurred. During the ice ages, large sheets of ice cover large portions of land. In the most recent ice age, which ended about 10,000 years ago, large parts of northern Europe and North America were covered by ice sheets.

What is the Coriolis effect?

Due to the rotation of the Earth, any object on or near the Earth's surface will veer to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This applies especially to phenomena such as ocean currents and wind. Imagine a missile being fired at New York by Los Angeles. As the missile flies over the United States, the Earth continues to rotate under the missile and it strikes New Jersey instead. Missile launchers and pilots need to factor the spinning of the Earth into their trajectories in order to end up in the right place. North of the equator, ocean currents and winds rotate clockwise, but south of the equator, the opposite is true.

Does the Coriolis effect make the water in my toilet, sink, and bathtub swirl clockwise?

No, the Coriolis effect has very little effect on such small bodies of water. The flow down the drain is mostly a function of the shape of the container.

If I keep walking in a straight line, will the Coriolis effect cause me to veer?

If your body were completely symmetrical (and no one's is) and neither leg were longer and you were walking on perfectly flat land then yes, you might start veering due to the Coriolis effect.

What is the difference between a bay and a gulf?

Both are bodies of water partially surrounded by land, and a bay is a smaller version of a gulf. Famous bays include the San Francisco Bay (California), the Bay of Pigs (Cuba),

Chesapeake Bay (Maryland/Virginia area), Hudson Bay (Canada), the Bay of Bengal (a large bay near India and southeast Asia), and the Bay of Biscay (France). Famous gulfs include the Gulf of Mexico (southern United States), the Persian Gulf (between Saudi Arabia and Iran), and the Gulf of Aden (between the Red Sea and the Arabian Sea).

Where does the Loch Ness Monster live?

The fabled monster is supposed to live in Loch Ness. The term "loch" is Gaelic and is used in Scotland to refer to a lake or narrow inlet of the sea. Loch Ness is fully surrounded by land and is therefore a lake.

How are waves created?

Waves are created by wind blowing across the surface of the water. Though waves appear to move along the surface of the water, they are simply the movement (oscillation) of water up and down due to the friction of the air. When waves occur near the shore, they may become steeper and "break."

Old Faithful in Yellowstone National Park is the most famous geyser in North America. Its eruptions occur so regularly that you can almost set your watch by them.

Old Faithful in Yellowstone National Park is the most famous geyser in North America. Its eruptions occur so regularly that you can almost set your watch by them.

How does Old Faithful shoot water into the air?

A geyser, such as Yellowstone National Park's famous Old Faithful, is the result of an underground aquifer that is warmed by heated rocks and magma underground. There is a small fissure or crack in the aquifer's surface that allows the steam and heated water to jet from the ground (about every hour at Old Faithful).

 
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