science
Grade-4-
Easy
Question
Which of the following component is related to rock?

- Biosphere
- Atmosphere
- Hydrosphere
- Lithosphere
Hint:
The lithosphere in the diagram can be related to the rocks.
The correct answer is: Lithosphere
- The lithosphere is a layer composed of hard rocks and some soil particles.
- The rocks are formed from the lithosphere.
- The crust and a portion of the mantle form the lithosphere.
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Which of the following is produced by mechanical weathering?
- Smaller particles
- Calcium particles
- Oxide particles
- Big rocks
Which of the following is produced by mechanical weathering?
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________ affects the rate of weathering.
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The process by which rocks are broken down into smaller pieces is called_________.
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The planet earth is at ________ position from the sun.
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________ contains highest mountains and deep oceans.
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Carbonic acid, which causes chemical weathering is formed by___________.
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_________layer solid and comprises of tectonic plates.
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_________layer solid and comprises of tectonic plates.
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_________ is an example of chemical weathering.
- Breaking of rocks by water
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_________ is an example of chemical weathering.
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Mantle is divided into _________.
- Upper and lower mantle
- Upper and middle mantle
- Thick and thin mantle
- Left and right mantle
Mantle is divided into _________.
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Splitting of rock along a fracture is an example of _______.
- Chemical weathering
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Splitting of rock along a fracture is an example of _______.
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- Chemical weathering
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Mantle expands up to a depth of _________below the crust.
- 5000 km
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Mantle expands up to a depth of _________below the crust.
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