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If you start with 48 atoms of Carbon 14 and have 24 atoms remaining after 20 days, what is its half-life?
20 days
What segment of geologic time is longest? (era, eon, period, epoch)
Eon
What are two of the three main types of rocks?
Sedimentary, metamorphic, and igneous
What is the type of fossil often found in Egyptian tombs?
Mummification
What is the type of fossil exhibited by mosquitoes in Jurassic Park?
Amber
What type of dating is shown with tree rings?
Absolute
What type of rock cools above Earth's surface very quickly?
Extrusive... or an example of one.
What relative dating law says the oldest stuff is down deepest?
Superposition
Other than the "youngest is on top" rule for relative dating, what are other signs that show something happened more recently?
Intrusive relationships or faults... or any close description of these things.
What classification of sedimentary rock has visible rocks cemented together?
Clastic or conglomerate
Approximately how old is the Earth, based upon geologic evidence?
4.6 billion years
What are three of the four spheres of Earth?
Geo, hydro, atmo, litho
What is the latitude of the Equator?
0 degrees
What type of rock is formed by magma coming near rocks under high pressure but not being melted completely?
Metamorphic
What is one example of mechanical weathering?
Frost wedging or wind
