Q I Complete the passage by filling in the missing words:
Weathering is the breaking down or dissolving of rocks and minerals on
Earth’s surface. Water, ice, acids, salt, plants, animals, and changes in
temperature are all agents of weathering. Once the rock has been broken
down, a process called erosion transports the bits of rock and minerals
away. No rock on the Earth’s surface is hard enough to resist weathering.
Weathering and erosion constantly change the Earth. Weathering wears
away exposed surfaces over time. It smoothes sharp, rough areas on
rocks. Weathering also helps create soil as tiny bits of weathered rock mix
with plant and animal remains. Weathering can be a mechanical or a
chemical process. Often, these two types of weathering work together.
1. Identify the landform in the picture.
Ox – bow lake
2. How is this particular design formed?
An oxbow is a crescent-shaped lake lying alongside a winding river. The
oxbow lake is created over time as erosion and deposits of soil change
the river's course.
Think and answer
Follow the clue and write the answer in the box give below:
BREAKING DOWN OF ROCKS: weathering
ANOTHER NAME FOR PHYSICAL WEATHERING : erosion
SEEPAGE OF RAINWATER,FREEZING,EXPANSION & BREAKING OF
ROCKS : Freeze-thaw weathering
A TYPE OF CHEMICAL WEATHERING : carbonation
THIS HAPPENS DUE TO WORK OF WIND: wind erosion
Weathering is the breaking down or dissolving of rocks and minerals on
Earth’s surface. Water, ice, acids, salt, plants, animals, and changes in
temperature are all agents of weathering. Once the rock has been broken
down, a process called erosion transports the bits of rock and minerals
away. No rock on the Earth’s surface is hard enough to resist weathering.
Weathering and erosion constantly change the Earth. Weathering wears
away exposed surfaces over time. It smoothes sharp, rough areas on
rocks. Weathering also helps create soil as tiny bits of weathered rock mix
with plant and animal remains. Weathering can be a mechanical or a
chemical process. Often, these two types of weathering work together.
1. Identify the landform in the picture.
Ox – bow lake
2. How is this particular design formed?
An oxbow is a crescent-shaped lake lying alongside a winding river. The
oxbow lake is created over time as erosion and deposits of soil change
the river's course.
Think and answer
Follow the clue and write the answer in the box give below:
BREAKING DOWN OF ROCKS: weathering
ANOTHER NAME FOR PHYSICAL WEATHERING : erosion
SEEPAGE OF RAINWATER,FREEZING,EXPANSION & BREAKING OF
ROCKS : Freeze-thaw weathering
A TYPE OF CHEMICAL WEATHERING : carbonation
THIS HAPPENS DUE TO WORK OF WIND: wind erosion
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