Advertisements
Advertisements
Question
Distinguish between rocks and minerals.
Solution
The rocks contain minerals in the form of ores, but minerals do not contain rocks. Sedimentary rocks contain fossil fuels like coal and petroleum etc, igneous rocks are rich in minerals like copper, gold, iron etc, metamorphic rocks contain valuable building stones like marble and garnet, feldspar etc. Rocks have no definite chemical composition, while minerals have particular chemical composition.
APPEARS IN
RELATED QUESTIONS
Write True or False. Rewrite the false statement correctly :
Sedimentary rocks are formed by the cooling and solidification of molten rock called magma
How are igneous rocks formed?
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.
Describe the process that leads to exfoliation.
Name the rocks which are most widespread on 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.
What are the chief characteristics of metamorphic rocks?
Classify the following rock: Limestone
Give one word for the following.
The outer layer of the earth.
Give one word for the following.
Rocks formed by the cooling and solidification of molten rock from beneath the earth crust.
Give one word for the following.
The core of the earth occupied by rock in iron and nickel.
Fill in the blanks
______ rock contain a low percentage of silica and a high percentage of basic oxides.
Fill in the blanks
Extrusive rocks are also known as ______ rocks.
Why are Sedimentary rocks called the Secondary rocks?
Give one term for the following statement:
Type of metamorphism in which changes are caused due to high pressure.
Chemical sedimentary rocks are found in the beds of reservoirs.
What is Thermal Metamorphism?
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.
| A. | Granite | 1. | Bed rock |
| B. | Soil layer | 2. | Plutonic rock |
| C. |
Barren island |
3. | Strip farming |
| D. | Soil conservation | 4. | Active Volcano |
