Final answer:
A Cardinal Buoy North indicates that the safest water lies to the north of the buoy, which is true. The north pole of the compass needle points north, and each piece of a shattered magnet retains both a north and a south pole. Displacement is the same regardless of the order of movement, making it false that one person's displacement is more than the other's.
Step-by-step explanation:
A Cardinal Buoy North in navigational terms means that the safest water lies to the north of the buoy. Therefore, the statement that a Cardinal Buoy North indicates that the safest water is to the North is true. It's important to note that these buoys use a combination of colors and shapes to convey information about the position of safe water relative to the buoy.
Regarding the direction in which the north pole of a compass needle points, the answer is a. North. A compass needle aligns itself with Earth's magnetic field, which means the north pole of the compass needle is attracted to the south magnetic pole of Earth, located near Earth's geographic North Pole.
Answering another true or false question, if a magnet shatters into many small pieces, all the pieces will indeed have north and south poles. This statement is true because every fragment of a magnet will maintain its magnetic properties, including both a north and a south pole.
In physics, when considering displacement, two people walking different routes but covering the same eastward and northward distances will have the same displacement. Thus, the statement that the displacement of the first person will be more than the displacement of the second person is false.
When paddling a canoe, going upstream, it is best to stay close to shore due to the slower current, which makes paddling less strenuous. When going downstream, staying nearer to the middle is advisable as the current is faster there, and less effort is needed to paddle.