(a) A fold in the layers of rock in the earth's surface which curves down:
(b) Relating to changes in the structure of the earth's surface:
(c) An upward, curved fold in the layers of rock in the earth's surface:
(d) A branch of a river that flows away from the main stream:
(e) A deep, narrow crack in rock or the earth:
Answers
Answer:
a) An anticline is a fold in the rocks which is curved upwards like an arch with the oldest rock layers at its core. A syncline is a fold that is curved downwards in a U- or V-shape, with the youngest rocks in its core.
Explanation:
b) The surface of the earth changes. Some changes are due to slow processes, such as erosion and weathering, and some changes are due to rapid processes, such as landslides, volcanic eruptions, and earthquakes.
c) A dome is such a fold that is convex upward; this means that its strata dip outward from a central area. A basin is a circular fold that is concave upward—i.e., the strata dip inward toward a central area.
d) A distributary, or a distributary channel, is a stream that branches off and flows away from a main stream channel. Distributaries are a common feature of river deltas. The phenomenon is known as river bifurcation. The opposite of a distributary is a tributary.
e) noun. 1A long, narrow opening or line of breakage made by cracking or splitting, especially in rock or earth. ''Earth fissures several feet wide and deep have been observed in Lucerne Valley,' he said.