Pencil shading

Correct answer: B. Graphite may shine and the paper grain may compress

Explanation: The governing concept is burnishing: heavy pressure forces graphite into the paper tooth and smooths the surface. When a hard pencil is pressed over a soft-pencil layer, the graphite can become shiny and the paper grain can be compressed, so later layers adhere less effectively. Therefore, option B is correct. Option A reverses the main surface effect, while highlights do not automatically improve and the underlying shadow does not simply disappear.

Correct answer: C. Adding new layers and controlling value will become difficult

Explanation: The governing concept is the tooth, or microscopic texture, of drawing paper. Open tooth provides small spaces that can receive additional graphite. Once those spaces are filled, a new layer has less surface to grip, so building darker values and controlling gradual transitions becomes difficult. Option C is correct. The other choices describe no necessary consequence: grain filling does not sharpen pencil movement, increase highlights, or erase a contour automatically.

Correct answer: D. The surface has become overly smooth from compression

Explanation: The governing concept is loss of surface tooth through compression or burnishing. Heavy earlier pressure can polish the graphite and flatten the paper texture, leaving few irregularities for a fresh soft-pencil layer to grip. Thus option D gives the material reason for poor adhesion. Pencil length, paper colour, and a change in light direction do not normally prevent graphite from adhering to the surface. Darken gradually before the surface becomes glossy.

Correct answer: A. The value range and pressure condition on the paper

Explanation: The governing concept is controlled value building. Moving from a hard grade to a softer one should be based on the darkness already achieved and on whether the paper surface still has enough tooth. Checking the value range and pressure condition, as stated in option A, prevents sudden dark patches and burnishing. Pencil length, contour thickness alone, and paper price do not determine whether the next shading grade is appropriate.

Correct answer: B. Control of light values and subtle transitions

Explanation: The governing concept is matching pencil hardness to tonal range. The softest pencils deposit dark graphite quickly, even with light pressure, so they are harder to control in highlights, pale values, and subtle transitions. Option B is correct. Using one soft grade does not change the paper size or the object’s proportion, and it does not affect only the contour. A balanced drawing uses harder grades for lighter areas and softer grades for deeper accents.

Correct answer: C. The surface may become unnecessarily grainy and laborious

Explanation: The governing concept is appropriate mark-making for the size of the area. A sharp tip creates narrow, visible strokes; repeating many tiny marks across a broad region can produce an uneven, grainy texture and requires unnecessary time. Therefore option C is correct. Such strokes do not make a value transparent, create a highlight automatically, or erase a cast shadow. Using the side of the pencil usually gives a broader, more even base tone.

Correct answer: D. Surface unity may break and unwanted texture may appear

Explanation: The governing concept is purposeful mark direction and surface unity. A side-shaded base produces a relatively even tone, but random sharp-tip marks introduce lines with different density and direction. Unless they describe form or material, they interrupt that unity and create unwanted texture. Option D is correct. Random marks do not automatically strengthen volume, correct local value, or clean highlights; those results require planned placement and observation.

Correct answer: B. On the right side opposite the light

Explanation: The governing shading principle is that the light-facing plane receives more illumination, while the plane turned away from the light becomes darker. If the light comes from the left, the core shadow usually develops on the right side of the sphere, making option B correct. The centre may have a middle value, and the lit edge or upper outline is not automatically the darkest area.

Correct answer: B. Graphite becomes deeply embedded in the paper

Explanation: The governing concept is gradual value building. Excessive pressure forces a large amount of graphite into the paper texture and fibres, so an eraser cannot remove it completely without damaging the surface. Therefore, option B is correct. Options A, C, and D are incorrect because pressure does not wet the paper, change the pencil’s colour, or erase lines automatically. Light layers are easier to adjust.

Correct answer: B. Strong contrast between sharp highlights and dark values

Explanation: The governing concept is value contrast and the observation of reflective surfaces. Shiny metal usually shows small, sharp highlights beside relatively dark reflected areas, so strong contrast makes its reflective quality believable. Option B is therefore correct. Uniform grey values flatten the object, dots do not explain its reflection, and a thick outline does not create a metallic surface.

Correct answer: B. It affects graphite deposit and visible grain

Explanation: The governing concept is the interaction between drawing medium and paper surface. A rough grain catches graphite on its raised areas and may leave visible texture, while a smoother sheet allows more even blending and finer detail. Therefore, option B is correct. Paper texture does not change the light direction, the object’s shape, or the length of the pencil. Testing a sample prevents surprises.

Correct answer: B. Following the curvature of the form

Explanation: The governing concept is contour-aware mark making. A cylinder has a rounded surface, so strokes that follow its apparent curvature help the viewer read the change of surface direction and volume. Option B is correct. Straight vertical lines may flatten the form, random marks do not describe its structure, and marks outside the outline do not shade the cylinder itself. Stroke direction should support the observed form.

Correct answer: B. Form shadow is on the object and cast shadow is on another surface

Explanation: The governing concept is the location of shadows in relation to the light source and object. Form shadow appears on the part of the object turned away from the light, whereas cast shadow is projected by the object onto a nearby surface such as a table or wall. Option B is correct. The other choices confuse shadows with outlines, make an unsupported claim about lightness, or deny the role of light.

Correct answer: A. Identify them early and leave them free of graphite

Explanation: The governing concept is planning the value range before applying medium. The cleanest white highlight is usually the untouched paper, so identifying highlight areas first and keeping graphite away preserves maximum brightness and avoids damaged fibres. Option A is correct. Forceful late erasing can roughen the surface, darkening everything first removes control, and erasing only the outline does not preserve highlights.

Correct answer: B. Lifting graphite gently to create highlights

Explanation: The governing concept is subtractive shading, in which value is created by selectively removing graphite. A kneaded eraser can be shaped into a point and gently dabbed or pressed to lift graphite, soften transitions, and create controlled highlights. Therefore option B is correct. It cannot cut paper, draw a dark line, or sharpen a pencil; those actions require different tools.

Correct answer: A. When all values become muddy and edges are lost

Explanation: The governing concept is controlled value modelling: a drawing needs clear differences between light, middle, and dark areas, as well as selected sharp and soft edges. Excessive rubbing spreads graphite beyond its intended area, weakens contrast, and makes every edge equally vague. Therefore, option A is correct. A new sheet, a sharp pencil, or a small object does not by itself cause this loss of structure.

Correct answer: A. Because volume requires different light and shadow values

Explanation: The governing concept is tonal modelling. A three-dimensional object appears solid when its planes or curved surfaces show relationships among light, middle, and dark values. If one grey value covers everything, there is no tonal evidence of turning, illumination, or shadow, so the form looks flat. Option A is correct. An outline alone cannot create volume, and the object’s colour or the pencil’s colour is not the central issue.

Correct answer: A. Harder and sharper

Explanation: The governing concept is the relationship between light-source size and edge quality. A small, intense source sends rays from a relatively narrow direction, so the boundary between illuminated and blocked areas is usually distinct. Thus option A is correct: the shadow edge appears harder and sharper. A broad source creates softer transitions, while source direction is still present and a shadow is not white.

Correct answer: A. The edges are softer

Explanation: The governing concept is diffuse illumination. A broad light source reaches the subject from many nearby directions, so the transition from light to shadow is gradual rather than sharply cut. Therefore option A is correct: the cast shadow generally has softer edges and a wider penumbra. It need not be completely black, it lies outside the object on a surface, and the illuminated area does not disappear.

Correct answer: A. The lighting structure remains clear

Explanation: The governing concept is working from big tonal relationships to small details. First separating the main light, middle, and shadow groups makes the direction of illumination and the overall form readable. Option A is correct because this structure can be checked before details distract the eye. Value grouping does not erase every line, alter proportion, or make the paper whiter; it organizes the drawing’s tones.

Correct answer: A. Better value control and protection of the paper surface

Explanation: The governing concept is gradual graphite layering. Several light passes build darkness step by step, allowing the artist to compare the value after each layer and stop at the desired tone. This method also reduces deep grooves, shiny burnished patches, and damage to the paper caused by excessive pressure. Option A is correct; layering cannot change the light source, lengthen the pencil, or add colour to a graphite drawing.

Correct answer: A. Curving with the surface form

Explanation: The governing concept is directional or contour-based shading. On an oval object, strokes that follow the surface curvature help the viewer read how the form turns in space; they reinforce both surface direction and volume. Therefore option A is correct. Completely straight strokes may flatten the form, dots do not describe continuous curvature, and strokes extending outside the object break its boundary.

Correct answer: A. The effect of light on differently oriented planes will not be shown

Explanation: The governing concept is planar value separation. A cube has faces that point in different directions, so a fixed light source normally illuminates them by different amounts. Giving every face the same value removes that directional light information and weakens the cube’s three-dimensional structure. Option A is correct. The paper does not tear merely from equal values, the outline need not vanish, and the relevant issue is planes rather than roundness.

Correct answer: B. Contact shadow

Explanation: The governing concept is contact shadow, the concentrated darkness where an object meets or nearly meets the supporting surface. Because very little light enters that narrow junction, it is often darker and sharper than the wider cast shadow. Option B is correct. Reflected light slightly brightens a shadow, a middle tone is a value category, and a highlight is a bright area rather than a dark one.

Correct answer: A. Contact shadow and cast shadow

Explanation: The governing concept is visual grounding through shadow relationships. A contact shadow anchors the exact point where the object touches the surface, while a cast shadow extends away according to the light’s direction. Together they communicate weight, position, and contact with the ground, so option A is correct. A thick outline may describe shape but not weight; uniform grey removes modelling, and an empty background gives no supporting plane.