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Science terms
#26-30
Question | Answer |
---|---|
what is a snowline? | a line on very high mountains where snow remains year round and very little if any plant or animal life exists |
how much of earths ice does antarctica have? | 90% |
how much of earths fresh water does antarctica have? | 70% |
what is a summit? | the highest point of a hill, volcano or mountain |
is there a point in maryland that is a mile high? | nope |
what is the highest point east of the mississippi? | The highest point east of the Mississippi river is Mt. Mitchell in North Carolin at approx. 6,70 feet above sea level |
what is magnitude? | the measurement of the amount of energy released at the focus of an Earthquake |
what is the average waste americans discard in a year? | 1,300 pounds of trash per year, with almost half of that being paper |
what is deposition? | When a gas ( water vapor ) changes directly to a solid ( ice ) without ever going through the liquid phase ( becoming water ) |
what is the longest U.S river that is longer than 600 miles? | The "Yellowstone River" in Montana is the only river in the U.S. longer than 600 miles that does not have a dam ( reservoir ) on it |
what is supplamation? | the process of a solid ( like dry ice ) turning into a gas ( steam / vapor ) without ever going through a liquid phase |
how long ago did the astroid strike earth? | Scientific evidence shows that circa 250 million years ago, a large asteroid struck Earth and within 10,000 years, 90% of all living species had become extinct |