1. Write short notes on the following:
a) Types of volcanoes (5)
b) Criteria for recognition of fault (5)
2. Discuss classification of mountains based on their period and mode of
origin
(10)
3. Explain briefly the erosional landforms of wind with the help of neat
labelled sketches.
(10)
4. Explain the causes of physical weathering in rocks. (10)
5 Discuss the significance of geology in our daily lives. (10)
Part B
6. Differentiate between fault and joint and discuss their genetic
classification.
(10)
7. Differentiate the following :
a) Asteroid, meteorite and comet (5)
b) Convergent, divergent and conservative plate boundaries (5)
8. What is unconformity? Add a note on different types of unconformities. (10)
9. Discuss the depositional landforms of glaciers with the help of suitable
diagrams.
(10)
10. Write short notes on the following:
a) Field equipments. (5)
b) Evidences of sea floor spreading. (5)
Answers
Answer:
Mark me Brainliest to get other 5 answers :-)
Explanation:
1.=Cinder cones
Cinder cones are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped as well as throughout other volcanic terrains of the world.
=Composite volcanoes
Some of the Earth's grandest mountains are composite volcanoes--sometimes called stratovolcanoes. They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8,000 feet above their bases. Some of the most conspicuous and beautiful mountains in the world are composite volcanoes, including Mount Fuji in Japan, Mount Cotopaxi in Ecuador, Mount Shasta in California, Mount Hood in Oregon, and Mount St. Helens and Mount Rainier in Washington.
=Shield volcanoes
Shield volcanoes, the third type of volcano, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield. They are built up slowly by the accretion of thousands of highly fluid lava flows called basalt lava that spread widely over great distances, and then cool as thin, gently dipping sheets. Lavas also commonly erupt from vents along fractures (rift zones) that develop on the flanks of the cone. Some of the largest volcanoes in the world are shield volcanoes.
2.Classification of mountains on the basis of the period of origin. A total of nine orogenic or mountain building movements have taken place so far. Some of them occurred in Pre-Cambrian times between 600-3,500 million years ago. The three more recent orogenies are the Caledonian, Hercynian and Alpine.
3. The landforms which are created by erosional and depositional activities of wind are called as Aeolian Landforms. ... An erg (also known as sand sea / dune sea / sand sheet if it lacks dunes) is a broad, flat area of desert covered with wind-swept sand with little or no vegetative cover.
4.Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water. ... Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart.
5.Geology in everyday life is not restricted to resources. It is also about hazards and risk associated with rock falls, radon, landslides, quick clay, landslides and earthquakes. Geology is detective work. Geology helps us understand climate change in the past, which may help us predict future scenarios.
Answer:
Write short notes on the following:
a) Types of volcanoes (5)
b) Criteria for recognition of fault (5)