Question

What are fossils? How are the formed? List two methods detrminning the age of fossils.

Answer 1

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

Answer 2

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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