8. Explain different types of volcanic landiorms
9. Explain the structure of the earth with the help of diagram.
10. What do you mean by earthquake? Explain the three earthquake wa
11. What do you mean by scismologist? Discuss focus hypoxcenter and
measure its magnitude and intensity?
12 Explain the continental drift theory given by Alfred Wegener
13. The chief cause of a volcano is disturbances in earth's crust". Elabo
14. Explain Tectonic plate theory and its working
15. Explain the occan floor configuration with the help of diagram
16. Explain the rock cycle with the help of diagram,
17. Why are minerals important for us?
18. What is meant by geomorphic process? What are its agents? Give e
Answers
Answer:
8.Volcanic eruptions pull materials up from deep within the earth to form various volcanic landforms, such as lava domes, lava plateaus, fissure eruptions, craters and calderas. Learn about these volcanic landforms and how they are created.
9.The structure of the Earth is divided into layers. These layers are both physically and chemically different. The Earth has an outer solid layer called the crust, a highly viscous layer called the mantle, a liquid layer that is the outer part of the core, called the outer core, and a solid center called the inner core.
10.An earthquake is an intense shaking of Earth's surface. The shaking is caused by movements in Earth's outermost layer.There are many different types of earthquakes: tectonic, volcanic, and explosion. The type of earthquake depends on the region where it occurs and the geological make-up of that region.
11.The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the point directly above it at the surface of the Earth. Also commonly termed the focus. See also epicenter.
12.Continental drift was a theory that explained how continents shift position on Earth's surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents.
13.Learn more about the causes and effects of earthquakes in this article. ... located at the fringes of the huge tectonic plates that make up Earth's crust.
14.The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.
15.An oceanic basin is the land surface under an ocean that includes the topography under the water. The ocean floors can be divided into four major divisions: The Continental Shelf. The Continental Slope.
16.The process of transformation of rocks from one form to the other in a cyclic manner is known as the rock cycle. It includes the following processes: Hot lava cools down to form igneous rocks. Igneous rocks are then broken down into small particles which are transported and then deposited.
17.Minerals are important for your body to stay healthy. Your body uses minerals for many different jobs, including keeping your bones, muscles, heart, and brain working properly. Minerals are also important for making enzymes and hormones. There are two kinds of minerals: macrominerals and trace minerals.
18.Running water, groundwater, glaciers, wind, waves and currents, etc., can be called geomorphic agents. The endogenic and exogenic forces causing physical stresses and chemical actions on earth materials and bringing about changes in the configuration of the surface of the earth are known as geomorphic processes.
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