<h2>Answer: D. Rayleigh wave
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Rayleigh waves are a type of surface acoustic wave that causes particles on the surface of solids to travel along an elliptical path in the vertical plane that contains the direction of wave propagation.
These waves include longitudinal (P wave) and transverse (S wave) movements whose amplitude decreases exponentially as the distance from the surface increases.
This means Rayleigh waves are generated by the interference between the P and S waves on the surface of the Earth.
Answer:
The five process bu which rocks can change from one form to another are -
1. Weathering 2. Metamorphism 3. Cooling and crystallization 4. Lithification of sediments 5. Igneous rocks change into metamorphic rocks
Explanation:
The processes by which rocks can change from one form to another are as follows :
1. Weathering : It wears/breaks down the rocks at the surface of Earth’s into smaller pieces.
2. Metamorphism : This changes the entire texture as well as the mineral composition of the rock under conditions of extremely high temperature and pressure.
3. Cooling and crystallization from a molten magma material results in the generation of igneous rocks.
4. Lithification of sediments with proper compaction and cementation leads to the formation of consolidated sedimentary rocks.
5. Igneous rocks change into metamorphic rocks when subjected to high temperature and pressure conditions deep inside the Earth.
Answer:
Anyone with access to wireless internet or advanced radio technology
Explanation:
Anyone with access to wireless internet or advanced radio technology have the ability to access GPS systems locally, nationally and world wide.
GPS is the short form of Global Positioning Systems. It is made up of a system of satellites which are used to locate positions on earth. They work on principle of triangulation.
- Most of these system of satellites are accessible over a wireless internet. For example, most of our mobile phone have this ability.
- Also, over advanced radio technology we can access these gps systems. This is used mostly in the military for more secured access.
The largest water reservoir is the ocean, containing 97.3% of all water on Earth.
