Question 6

the appearance of solid metals can be described as

question 6 options:

a)dull

b)glassy

c)powdery

d)shiny

Solid metals are appeared shiny as metals have plenty of free electrons.

Option: D

Explanation:

The surface of solid metals appear shiny, this is because elements consists of small atoms which has electrons, neutrons and protons in metals the electrons are distant from the nucleus hence, metals appear shiny.

When a bunch of metal atoms come together in a group, these outer electrons move side to side with small rapid movements. Light bounces or reflects these electrons and makes it look shiny.

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increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion