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Subjects
Science CBSE
Class 7 New
Changes around us: Physical and Chemical
Pumpa Practice Questions
32.
Difference between weathering and eroson
Exercise condition:
3
m.
Write the difference between weathering and erosion:
Weathering
Erosion
It is the
breaking down of rocks into smaller pieces
Melting of rocks into lava
converting rocks into gases
formation of new rocks from magma
at the same place.
It is the
burning of soil into ash
formation of fertile soil without movement
wearing away and carrying of soil and rock particles
freezing of soil into ice
from one place to another.
It occurs
at the place where the rocks are present
deep inside the Earth's core
only inside rivers
inside volcanoes only
.
It involves the
movement of weathered materials
growth of tree roots
melting of rocks
formation of new minerals
to another location.
It is caused by
wind, water, temperature changes, and plant roots
fire, glass, and rubber
electricity, magnets, and plastic
paper, cloth, and wood
.
It is mainly carried out by
magnets, batteries, and wires
fire, smoke, and steam
flowing water, wind, glaciers, and sea waves
fans, pumps, and machines
.
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