Question

Q.2 (A) Explain the following terms. 1. Water fall 2. SiAl 3. Fossils​

Answer 1

Explanation:

water fall:A waterfall is an area where water flows over a vertical drop or a series of steep drops in the course of a stream or river. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf.

Fossils:Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. Fossils also include any preserved trace of life that is typically more than 10 000 years old.

Answer 2

Answer:

1. Water fall

A waterfall is an area where water flows over a vertical drop or a series of steep drops in the course of a stream or river. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf.

2. SIAL

SiAl is the assemblage of rocks, rich in silica and alumina, that comprise the continental portions of the upper layer of the earth's crust.

3.Fossils

Fossil is the remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in Earth's crust.