Author Question: The difference between a groin and a jetty is that A) a jetty is longer than a groin. B) a ... (Read 74 times)

rl · **on:** Jul 16, 2018

The difference between a groin and a jetty is that

A) a jetty is longer than a groin.
B) a groin is higher than a jetty.
C) a groin is perpendicular to the shoreline and a jetty is parallel to the shoreline.
D) a jetty is perpendicular to the shoreline and a groin is parallel to the shoreline.

Question 2

Judge the following sentence according to the criteria given below.

In barrier-island shorelines tidal currents are much stronger in tidal inlets between adjacent islands than on the nearby tidal flats because neap tides occur when the Moon's gravitational attraction is oriented perpendicular to that of the Sun.
A) The assertion and the reason are both correct, and the reason is valid.
B) The assertion and the reason are both correct, but the reason is invalid.
C) The assertion is correct but the reason is incorrect.
D) The assertion is incorrect but the reason is correct.
E) Both the assertion and the reason are incorrect.