Answer: Option (A) and (C)
Explanation: In case of slow sea floor spreading, the magma within the crust doesn't get proper way to exert the force upward because of its slower rate of spreading. Due to this, rifting occurs along the mid oceanic ridge.
Due to continuous rifting, it forms a valley known as the rift valley. This rift valley lacks in ridge and is comparatively smooth compared to a fast spreading sea floor, in which the topography appears to be rough and ridges are formed.
Thus, the statements that are true are option (A) and (C).
Answer:
Most economically viable hydrocarbon deposits percolate UP from deeper source rocks. (Exceptions being tar sands, shale oil, etc.) The key factor in whether oil or gas is produced is the pressure, heat, and also dwell time of the organic matter in the source rock.
D) The fresh water lake with the largest surface area
Answer: English(North America), Spanish(Central America/South America), Portugese (Brazil), Inuit (Alaska &Canada)
Explanation:
done.
The Richter scale is a logarithmic scale used to measure the destructive power of an earthquake. For every unit, increase corresponds to approximately a 30-fold increase in the total energy released.
The energy released from a 5.2 Richter scaled quake is:
1). 105.2 ergs
An earthquake occurs when Earth's crust releases <span>stored energy suddenly. Generally,</span> less than 10% of an earthquake's total energy is released in the form of radiated seismic waves. The moment magnitude scale is the one which measures the amount of energy which is released by an earthquake.
