Give short answers for the following questions.
1. Explain Wegener's Theory of Continental Drift.
2. Explain how earthquakes occur.
3. Name the major earthquake belts of the earth. Where are they located?
4. What are the causes of the Bhuj earthquake?
H. Give long answers for the following questions.
1. Explain the concept of Plate Tectonics.
2. Explain the different types of forces.
3. How are volcanoes distributed on the earth?
1. Describe the different types of earthquake waves.
cimil
Answers
Answer:
1. Continental drift was a theory that explained how continents shift position on Earth's surface.
2. Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. ... After a while, the rocks break because of all the pressure that's built up. When the rocks break, the earthquake occurs.
3. The two major seismic belts are the Circum-Pacific Belt, which surrounds the Pacific Ocean, and the Alpide Belt, which stretches from the Azores through the Mediterranean and Middle East to the Himalayas and Indonesia, where it joins the Circum-Pacific Belt.
4. The earthquake was caused at the convergent plate boundary between the Indian plate and the Eurasian plate boundary.
1. 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.
2. Contact Forces, Action-at-a-Distance Forces, Frictional Force, Gravitational Force, Tension Force, Electrical Force, Normal Force, Magnetic Force, Air Resistance Force, Applied Force, Spring Force.
3. Volcanoes are distributed all around the world, mostly along the edges of tectonic Plates , although there are intra-plate volcanoes that form from mantle Hotspots (eg, Hawaii). Some volcanic regions, such as Iceland, happen to occur where there is both a hotspot and a plate boundary.
4. Earthquakes produce three types of seismic waves: primary waves, secondary waves, and surface waves. Each type moves through materials differently. In addition, the waves can reflect, or bounce, off boundaries between different layers.