excavation methods

Correct answer: A. Pressure on the trench wall and risk of collapse

Explanation: The governing safety principle is that a spoil heap adds extra load close to the trench edge. This surcharge increases pressure on the soil and may weaken or destabilise the trench wall, especially in loose or wet ground. Therefore, the danger of a collapse rises, making option A correct. The pile cannot change artefact dates, pottery numbers, or the colour of a datum; those distractors confuse excavation safety with recording or laboratory issues.

Correct answer: A. Stop entry and provide safe access and exit

Explanation: The governing concept is safe access and emergency egress in excavation work. A deep trench must not be entered until a stable ladder or another approved means of entry and exit is installed, because a worker may need to leave quickly during a collapse or other emergency. Thus option A is correct. A rope is unreliable, continuing work ignores the hazard, and digging deeper increases danger rather than controlling it.

Correct answer: A. Causes of moisture, soil visibility and conservation changes

Explanation: The governing concept is that archaeological observations are shaped partly by environmental conditions. Rain can increase soil moisture, obscure or reveal colour differences, and damage or alter exposed structures; strong sunlight can also affect visibility and photographic recording. Without weather notes, researchers may misinterpret these changes, so option A is correct. Weather omission does not determine script language, brick proportions, or skeletal sex.

Correct answer: A. From evidence of goods obtained from different regions and transport routes

Explanation: A trading settlement is suggested by non-local goods, imported raw materials, varied finished products and evidence connecting the site with transport or exchange routes. Such findings show contact with regions beyond the settlement. Domestic hearths, field remains and animal bones may indicate ordinary household, farming or subsistence activity, but each can occur without trade. Therefore, option A provides the strongest combined evidence.

Correct answer: B. The spread of remains and the mound

Explanation: The governing archaeological method is site-survey and spatial distribution analysis. Archaeologists examine how far pottery, bricks, walls, tools, refuse, and other remains extend across the surface and mound. This spread helps estimate the probable extent of the settlement, although it may not show its exact original boundary. Therefore, option B is correct; one house, well, or street provides only a very limited sample.

Correct answer: C. It is relatively the oldest

Explanation: The governing concept is stratigraphy, the study of layers formed over time. When deposits accumulate undisturbed, earlier material is generally buried beneath later material. Consequently, the lowest cultural layer is usually relatively older than the layers above it, so option C is correct. The rule is not absolute if digging, rebuilding, erosion, or disturbance has mixed deposits; therefore, “relatively” is important. The other choices reverse or oversimplify the sequence.

Correct answer: C. A specialised economic centre

Explanation: The governing concept is economic specialisation within an urban or regional settlement. Multiple craft workshops indicate organised production, and a market indicates exchange between producers and consumers. Together, these features make option C, a specialised economic centre, the most appropriate conclusion. A temporary pastoral camp, an exclusively agricultural village, or a purely ritual residence would not normally explain both workshops and a market.

Correct answer: C. Identifying old routes, walls, and site forms

Explanation: The governing concept is remote sensing as a survey method. Aerial and satellite images provide a broad view of terrain and can reveal crop marks, buried or eroded walls, ancient routes, mounds, field systems, and the overall shape of a site. Thus option C is correct. Such imagery does not weigh objects, directly read inscriptions, or merely count pottery; excavation and laboratory methods are needed for those tasks.

Correct answer: A. Location helps explain the context and possible use of the object

Explanation: Archaeological interpretation depends on context, meaning the object’s layer, position, nearby finds, and relationship to buildings or activities. Recording the original location can help infer how an artefact was used, deposited, or associated with a group of objects. Once removed without documentation, much of this evidence is lost. Location does not determine colour or market price. Hence option A is correct.

Correct answer: A. Once a layer is removed, its original context cannot be recreated

Explanation: Excavation involves removing soil and cultural layers in a controlled sequence. Once a layer has been taken away, its original position, relationship with neighbouring deposits and undisturbed context cannot be physically restored. Careful plans, photographs, measurements and notes therefore become essential. Option A is correct; excavation does not necessarily destroy every artefact, last one day or involve soil that cannot be removed.

Correct answer: A. It shows relative age through the sequence of layers

Explanation: The governing concept is stratigraphy, the study of the sequence and relationships of soil or occupation layers. In an undisturbed deposit, a lower layer was generally formed before the layer above it, so it is relatively older. Thus option A is correct. Stratigraphy establishes relative order rather than automatically giving an exact calendar date; it does not determine market value, translate scripts, or name a site.

Correct answer: A. Surface survey and mapping scattered remains

Explanation: A surface survey records the distribution of pottery, bricks, tools, structural traces and other remains across the landscape. Mapping these finds helps archaeologists estimate where occupation extended and where the site boundary may lie before selective excavation begins. One test pit gives limited information, while a modern photograph or a changed name cannot establish an ancient boundary. Option A is correct.

Correct answer: A. To know its exact depth and spatial relationship

Explanation: Precise three-dimensional recording preserves an artefact’s archaeological context. Its depth helps relate it to a stratigraphic layer, while horizontal position shows association with buildings, burials, hearths, tools, or other finds. These relationships may reveal chronology and activity areas. Option A is correct; recording does not increase market value, alter size, or automatically decipher writing.

Correct answer: A. Metal craft was separated from residences because of smoke, heat, and fire risks.

Explanation: The governing concept is spatial organisation of craft production. Furnaces and metal waste identify a working area, while their position on the outskirts plausibly reflects separation from houses because smoke, heat, noise, and fire could disturb residents. Option A combines the material evidence with a reasonable urban function. The other options either ignore the industrial remains or make unsupported claims about graves, lack of metal knowledge, or natural furnaces.