True or False: A fossil is the remains of a living thing that has been preserved for millions of years.
True
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10
What do we call strong winds and heavy rainfall?
storms
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15
How old is the Earth?
Dating by radioactivity shows that the Earth is about 4600 million years old.
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baam
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fairy
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fairy
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lifesaver
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15
What happens to air when it moves from high pressure to low pressure?
It moves from areas where air pressure is high to areas where air pressure is low.
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15
How do geologists determine the age of rocks?
Geologists determine the age of rocks by measuring their radioactivity with special detectors.
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5
True or False: The first mammals appeared at about the same time as dinosaurs.
True
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10
What is the ideal humidity level for comfort?
45%
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5
True or False: Dinosaurs were the most important animal group during the Mesozoic era for nearly 200 thousand years.
False. Dinosaurs were there for 200 million years!
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10
What forms when air rises and cools?
clouds
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10
Who measures the conditions that describe the weather?
Meteorologists
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15
Describe how the continents changed during the Phanerozoic eon.
During the Phanerozoic eon, animals became common, and the continents drifted together to form the supercontinent Pangaea, which later split into the continents
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10
What do we call the temperature, winds, and other conditions of the atmosphere?
