What are fossils? How are the formed? List two methods detrminning the age of fossils.
Answers
Remains or impressions of dead animals due to disasters like earthquake, flood etc got buried underground. These are called fossils
A method used to determine the age of a fossil - Carbon Dating method
Question:
What are fossils?
Answer:
◆ Fossils: Fossils are prevented traces of living organisms.
◆ Fossils archaeopteryx process features of reptiles as well as birds.
◆ This suggest that birds have evolved from reptiles.
◆ The study of fossils is known as Palaeontology.
Question:
How are the formed?
Answer:
◆ Some invertebrates living on the sea bed died amd were buried in the sand.
◆ More sand was accumulated and formed sandstone under thr pressure.
◆ After the millions of years, dinosaurs living in the area died and and their bodies were buried in the mud.
◆ The mud got compressed into the rock, just above the rock containing earlier invertebrate Fossils.
Question:
List two methods detrminning the age of fossils.
Answer:
◆ RELATIVE METHOD: When we dig into the earth and start finding Fossils, it is reasonable to suppose that the Fossils we find closer to the surface are more recent.
◆ CARBON DATING METHOD: Second way of dating Fossils by detecting the ratio of different isotopes of the same element in the Fossils material.
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