Earth is of 29% land and 71%ocean

Earth is of 29% land and 71%ocean

1)

a.)Earth is of 29% land and 71%ocean. Out of total ocean abyssal plain constitute 50%, and abyssal plain starts from 3000 to 6000 meter .So hypsographic curve shows maximum distribution of earth surface around 4000m-5000m.

b.) High elevation landmasses or mountains are eroded due to weathering action water, wind and various factors. These factors tend to erode and try to equilibrate up to sea level, so they deposited near just around sea level may be above or below of sea level. So maximum land surface found in this region

c.)If the earth surface were not of water the curve would have been following type given in figure

d.) Thehypsographic curve of Venus will be Gaussian distribution or symmetrical single curve but earth has two bell type curve because of land distribution and oceanic distribution

2)

a.) Here the coastlines have been formed by the activity of river. As we know river activity changes with season so this coastline will seem different in different seasons. This figure looks like a delta deposit. The more the sediment supply by river the more the accumulation and the more the growth of the delta. At 2100 these features will be more prominent.

b.)Here the long shore current affects the coast thus resulting in causing erosion parallel to the shore. And sands are found which are the depositional feature whose concentration increases or deposition increases which the increase in accommodations. Its variation with the season is very slow because the rate of erosion is equal to the rate of deposition along the coast. But in long term that is in 2100 may vary because of the ecstatic sea level change due melting of ice due to global warming and may be due to subsidence of the land is statically.

3)

a.)

1. The records from the Blue Hill Observatory clearly indicates the heating effect and the rise of the temperature month wise that is January to September. And July being the warmest of all.
2. This data is very much useful since the observations show the co-relation of the months with the increasing temperature.
3. The arguments that perhaps may arise is that the observations reflected in the graphs shows that the month of May is cooler which perhaps be a trade off from the previous months and the temperature for the month of September is shown to be receding. The month of Oct- Dec shows no records of the heating temperature but the average temperature.

b.)

1. It is indicative that yes-Global Warming is occurring, as there is ever increasing temperature in the observations.
2. An average of 51.9 Degree Fahrenheit is recorded from Jan-Sept and there is no major receding record from the observations made.

C.) The Average temperature in Vancouver is 50 Degree Fahrenheit (Source – https://www.tripsavvy.com)

The Average temperature for Canada will be varying namely for the east and west coasts it will be around 70 Degrees Fahrenheit,between the east coast it will be 77 to 86 Degrees Fahrenheit. (https://weather-and-climate.com/average-monthly-Rainfall-Temperature-Sunshine-in-Canada)

When compare with the observation of the Blue Hill Observatory, The following can be derive

1. Temperature on an average it appears to be on the higher side.

4)

a.) Antarctica is present in Southern hemisphere. The September is a summer season of southern hemisphere because sunrays are directly falling on tropic of Capricorn. This initiates heat. The heat is trapping because of enormous amount of CO2 is present in atmosphere. This leads to make ozone hole bigger.

b.) No, there is no ozone hole in spring in arctic. Because arctic is present in Northern hemisphere and in spring time, the sun rays are in southern hemisphere which keeps northern hemisphere cool so there is no such ozone hole in spring time.

c.) Ozone hole is formed because of heat trapped in atmosphere. The radiations, which are coming from sun, are trapped because of CO2 gas. This gas affects ozone layer and tries to escape in space. This leads to create hole. In history, hole is small because the CO2 is less in atmosphere. Now a day, the due to fuel burning, CO2 is more in atmosphere.