Suppose the Sun’s surface temperature suddenly cools to 2000oC. Why would the sky appear more red than blue?
What will be an ideal response?
ANSWER: Based on Wien's Law, if the Sun were to cool to a lower temperature, the Sun would emit a peak in radiation at longer wavelengths. The longer wavelengths would be shifted toward the lower energy red portion of the visible spectrum. At present, the top of Earth's atmosphere reflects shorter blue wavelengths of light. If the Sun's energy spectrum were to be shifted, the Earth's atmosphere would be impacted by longer wavelengths of light and create a redder atmosphere.
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Which part of the government is responsible for making environmental policy laws?
A) Legislative branch B) Environmental Protection Agency (EPA) C) Judicial branch D) Executive branch
Why is plutonic a synonym of intrusive?
A) They mean the same thing. B) Plutonic comes from the Greek god of the underworld; intrusive rocks are formed beneath the surface of the Earth. C) Plutonic comes from the Roman god of the ocean; intrusive rocks are formed in water. D) Plutonic comes from the Roman god of fire; intrusive rocks form from lava on the earth's surface.
Most karst topography forms in ________
A) limestone B) granite C) basalt D) sandstone
What was wrong with Benoit de Maillet's method of determining the age of Earth?
A) He did not use the scientific method and instead made guesses. B) He based his theories on personal observations without taking into account actual evidence. C) His measuring instruments were of poor quality so he could not collect accurate data. D) He studied the knowledge and assumptions of the scientists of his time and before.