Bill Nye Movie-Glatz – Flashcards
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The first layer is the crust, a skin of rock covering the planet.
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Earth
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The core that Lehman had found was the Earth's inner core.
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The inner Core
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The core that Richard Oldem had discovered turned out to be the Earth's outer core.
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The outer core
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At the center of the core, the temperature can be as high as 13,000 degrees Fahrenheit, which is 2,000 degrees hotter that the surface of the sun.
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Earth's Core
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Pangaea comes from the Greeks and means "all Earth."
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Continental Drift
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When the United States entered WWII, Harry Hess was a geology professor at Pinceton University.
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Sea-Floor is spreading
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In 1953 a 12,000 mile long mountain range called the mid-Atlantic ridge was discovered in the Atlantic Ocean.
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had discovered that the seafloor was spreading.
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Harry Hess
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is the process that recycles the crust.
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Subduction
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The surface of the planet is broken into large interconnected plates, that are constantly in motion.
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Plate Tectonics
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they are NOT plowing.
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The plates are spreading,
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is a fault where the plates move by one another.
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A Strike-slip
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Weather has so many variables it can change quickly.
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One lightning bolt can strike with the power of 100 million volts.
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100 million volts
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Sphere of change.
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Troposphere means
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Sphere of layers.
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Stratosphere means
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discovered cosmic radiation.
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Victor Hess
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It is estimated that each year more than 100,000 people die from cancer caused by the small natural dose of radiation.
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the Earth's magnetic field acts as a shield, protecting our planet from the Sun's dangerous radiation.
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Magnetic field
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The Earth's magnetic field has reversed about 60 times in the last 20 million years.
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Every 40,000 years or so the angle of the Earth's axis tilts slightly.
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Ice Ages
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The Earth may have experienced as many as 17 ice ages over the last several million years.
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Over the past 100 years the surface temperature of the Earth has increased about 1 degree Fahrenheit.
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Global Warming
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has retreated by 1.2 miles over the last century.
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South Cascade Glacier
