This week's topic is: The End of the Dinosaurs
deposit:(n.) a natural underground layer of rock, coal, or other material
element:(n.) a substance that cannot be broken down any further. E.g. oxygen/calcium etc.
hothouse period: a period of high temperatures when there were no continental glaciers on Earth
aquatic: (adj.) consisting of, or related to, water
excavating: (v.) a process undertaken by archaeologists to remove earth carefully in order to find old objects buried in the ground or learn about the past
(A) is consistent with (B): in agreement with facts
spherule:(.n) tiny remains of molten rock that crashed back to Earth after asteroids hit it
terminal velocity:(n.) the highest speed an object can free fall
rule out:(v.) To reject as a possibility.
seismic:(adj.) subject to, or caused by, an earthquake
resonance:(n.) a vibration caused by various phenomenon
Deccan Traps: an area of intense volcanic activity 66 million years ago in what is now India.