You should spend about 20 minutes on this task.
The graphs below show the development of the cutting tools made by stone, one was made 1.4 million years ago, and the other was made 800 thousand years ago, viewing from back view, front view and side view. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.
Write at least 150 words.
Model Answer
The given diagram illustrates the cutting stone tool and how it was advanced, from 1.4 million years ago to 800 thousand years ago. It can be clearly seen that the stone tool was improved into a sharper and better one, over the years.
The stone tool made 1.4 million years ago was more rounded at the top and bottom edges. From the front and the back view of the tool it is clear that the diameter in the middle was almost 5 cm and towards the top and bottom, it was around 3 cm wide. The side view shows that the tool was wider in the middle, with a diameter of around 3 cm and it tapered towards the top and the bottom ends. The back of the stone had fewer cuts than the front and they were also not very fine.
800 thousand years ago, this tool developed into a sharper, more refined tool. In the front and the back view it can be seen that the maximum diameter of the tool was the same as in the older tool, but it was more towards the lower side. The bottom tapered into a 1 cm point, but the top tapered more sharply into a 1 cm point. The side view makes it clear that it was much lesser in width (1.5 cm) than the older tool. The stone was more chiseled than the previous one.
Overall, it can be observed that the tool was improved over the years to a more refined and finer cutting tool.