Answer:
Option (4)
Explanation:
Seismic P and S waves are generated during an earthquake that has the potential to propagate through the interior of the earth. P waves are also known as the primary waves and they move in a compression and extension way in their direction of propagation. S waves are shear waves. This P waves travel faster than the S waves and can travel in both solid as well as in liquid. Whereas the S wave can travel only through solids. They get absorbed when they reach the core-mantle boundary. These two waves are helpful in determining the epicenter of an earthquake by recording the arrival of these waves.
Hence, the correct answer is option (4).
Answer:
Correct answer is A Greeks
.
Explanation:
A is correct answer as Greece was the cradle of democracy, especially city-states Athens, from where the ideals of democracy spread to other countries. They had their political bodies, such an Assembly, where people could participate in the decision making.
All other options are wrong, as in this countries also these ideals spread from Ancient Greece.
Gravels are the largest particles formed from the breakdown of rocks.
Hope this helps!
Answer:
Carbon dioxide and water vapour concentrations will lead to change in temperatures.
Explanation:
- Most of the common volcanic gases include carbon dioxide, sulphur dioxide and hydrogen sulphide along with small quantities of volatile compound and elements present such as hydrogen, helium and chloride etc.
- The carbon dioxide and water vapour alter the temperature During the experiment the concentration of carbon dioxide goes up and the temperature goes down. Thus volcanic eruption often leads to global cooling.
