Answer:
Parallax would be most effective in measuring distances to stars which are close to the Earth.
Explanation:
In the experiment,
- The parallax shift would decrease as the pencil would move further away from the scientist's eye, so option 1 would be invalid.
- the size of the pencil remains constant, so option 2 would be invalid.
- the parallax shift can be observed when the pencil has objects in the background to provide relation, that is to say, the shift of the pencil when seen relative to background objects; therefore, if we assume that the pencil is a star nearby to the Earth, and the background objects are stars that are further away, then the shift of, and thus, distance to the nearby star can be easily observed.
The way to tell them apart from each other lies in the speed of the wind. When the speed of the wind is between 39 mph to 73 mph, the tropical depression developed (low pressured areas in the ocean that have the power to grow stronger) is classified as a tropical storm. Hurricanes are more intense and are formed over oceans with the wind speed reaching at least 74 mph. Hurricanes also have a noticeable eye in the center of the storm and tropical storms don't have any at all. Basically, a hurricane is a more intense version of a tropical storm that appear to be smaller compared to a tropical storm.
Hope I answered this correctly and hope it helps! :)
The southern part, because the altitude increases as you go south in Egypt and leads into the Ethiopian highlands
