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A       D I V I S I O N      O F      E K L A V Y A      E D U C A T I O N      F O U N D A T I O N    Code: TLM-Sc-004 Age: 9-16 yrs    Name: Geology Demonstration Kit   1. Position the three simulated rock formations as shown below: Place two blocks under the center rock formation. Graben or Rift Valley: It is defined as a depression formed by the going down of land between two parallel faults. Example Rhine rift Valley (Germany) To illustrate the formation of a GRABEN a depression formed by the subsidence or dropping of land between two parallel faults: 1. Set up the three simulated rock formations as shown below: 2.Place two blocks under each of the large formations as shown below:   DIP AND STRIKE The terms DIP and STRIKE are used to describe the attitude or orientation of a rock layer in the earth's crust. The dip of the bed is the angle from the horizontal at which the bed is inclined and the direction of this inclination. You can measure the angle of dip by holding a protractor in the position shown. The strike is the direction of outcrop of a level surface: it is always at right angles to the dip. The T shaped symbol shown in the diagrams represents the dip and strike. The long line or top of the T represents the strike, and the line at right angles to it represents the direction of the dip. The number of degrees on each diagram indicates the inclination from the horizontal. ADDITIONAL ACTIVITIES 1. Discussion and / or Research Report: The basic differences in the ways in which mountains are formed. Volcanic - Mt. Fujiyama Fold - Himalayas Residual - Arravalli Block - Vidhyan & Satpura 2. Mountains appear very tall and impressive. Actually, they are quite small when compared with the size of the earth (The earth's diameter at the equator is approximately 8,000 miles; the highest mountain is less than six miles in height.)

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