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प्रश्न
Find the difference between:
Igneous and sedimentary rocks
Give three points of difference between the igneous rocks and the sedimentary rocks.
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उत्तर
| Igneous Rocks | Sedimentary Rocks |
| These are formed due to the cooling and solidification of ‘magma’ and ‘lava’. | These rocks are formed due to continuous deposition and compaction of weathered pieces of rocks transported to various places by wind, glaciers, rivers, etc. |
| These are hard, homogeneous and heavy rocks. | These are brittle, layered and light in weight. |
| They lack fossils. | They show the presence of fossils. |
| Example: Basalt, Granite, etc. | Example: Sandstone, limestone, etc. |
Notes
Students should refer to the answer according to their questions.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Conglomerate is an example of _____________ rocks.
Fill in the blank
Sedimentary rocks are formed from _____________ accumulated over long periods.
Fill in the blank
Sedimentary rocks such as limestone change into ___________.
What are minerals?
Classify the following rocks by selecting the correct option given below:
limestone
With the help of your teacher, collect different types of rocks such as granite, sandstone, limestone, marble, slate, graphite, etc. and prepare a chart containing information about their colour, hardness, texture, and permeability.
State two characteristics of Basic Igneous Rocks.
Name the three stages of lithification of Sedimentary rocks.
Give two examples of metamorphic rocks.
State the types of rocks for the formation of which the following process is involved.
Solidification of magma on the surface of the earth.
State the types of rocks for the formation of which the following process is involved.
Formation of large crystals, coarse texture and slow cooling and compaction.
Describe how igneous rocks are formed.
How are sedimentary rocks classified on the basis of their formation?
State the chief characteristics of metamorphic rocks.
Name different types of sedimentary rocks.
How are chemically-formed sedimentary rocks formed? Give examples.
What is meant by the term ‘metamorphism’?
Classify the following rock: Peat
Give one word for the following.
The outer layer of the earth.
Give one word for the following.
A sedimentary rock, which is composed of microscopically fine, soft and smooth particles.
Why are Sedimentary rocks called the Secondary rocks?
Give one term for the following statement:
Rounded or sub-rounded fragments, usually water-born cobbles, pebble and gravel, cemented together by a matrix of calcium carbonate, silica, etc.
Give reasons for the following
Man’s habitat is the biosphere and not the lithosphere in the true sense.
How is sand that flows in a river formed? Collect some information about where the sand comes from.
Fossils are found in.
Classify and explain the rocks.
Diamond is an example of _______ rock.
______ rocks are also known as stratified rocks.
Out of 2,000 different types, only ______ are the basic minerals commonly found all over the earth.
The world Igneous is derived from the Latin word ______ meaning ______.
Explain Dynamic Metamorphism.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Match the following.
| Group A | Group B | ||
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
