Part 1-: Which of the following are normally well-sorted terrigenous clastic sed
ID: 109772 • Letter: P
Question
Part 1-:
Which of the following are normally well-sorted terrigenous clastic sedimentary rocks?
a) tillite
b) sandstone
c) breccia
d) shale
e) both b and d
Part 2-:
Froude number provides an indication of whether stream flow will be subcritical or supercritical. Which of the statements are true?
a) when the Froude number is 0.2, the main water body undercuts the waves and “standing waves” are produced.
b) when the Froude number is 1.3, the surface waves move slower down-stream than the main body of water.
c) when the Froude number is 1.6, the surface waves move faster down-stream than the main body of water.
d) when the Froude number is 0.5, waves will break upstream.
e) both a and b are correct.
Part 3-:
The ________ consists of ___________ that will be deposited _____________.
a) ion load; compounds that are too small to be visible to the naked eye; when water is nearly stagnant
b) suspended load; silt and clay particles; when water is nearly stagnant
c) solution load; silt and clay particles; when water slows
d) suspended load; sand and gravel; when water slows
e) saltation load; ions in solution; when water evaporates
Part 4-:
The competency of a stream is related to its:
a) ability to generate hydroelectric power.
b) flow velocity.
c) ability to transport large particles.
d) volume of fluid.
e) both b and c.
Explanation / Answer
Answer- Part1- Sorting defined the uniformity in the grain size of sediment. it represent the variation in grain size particle. the wellsorted means the grains of sedimentary rock are of same size they may be larger grain or may be finer grain. so common well sorted terriegenous sedimentary rock are sandstone and shale boths option b and d (option E) boths sandstone and shale represent well sorting.
part 2- Froude number defined the ratios of intertial force and gravitational force. when intertial force is greater less then lamellar flow occurs and when intertial force is greater tha ngravitational force turbulent flow will occur.so when the froude number is 1.6 then surface wave downstream move faster than the main body of stream (option C).
part 3- the Ion load consists of so small size particle that are too small to see from naked see and these deposit under when water is stagnant. (option A). silt and sand particle are suspended load. and lime is dissolved load and gravel and boulder are bed load.
part 4- the competency of stream related to ability of transport large size particle (option C) like boulder, cobble, gravel etc. stream having have high comptency can transport boulder too.