Brush techniques

The governing concept is atmospheric or aerial perspective: distance reduces apparent edge sharpness, contrast, and surface detail because intervening air softens visual information. Option B is correct, so distant trees should receive softer edges and less distinct texture, while nearby trees can have clearer marks and stronger detail. Harder distant edges or identical treatment would weaken the sense of depth, and leaving foreground trees unpainted is unrelated.

A filbert has a rounded end designed to produce curved, petal-like marks when its shape is used properly. Square edges usually result from pressing the brush flat, stopping abruptly, or failing to release pressure. Option C is correct: use the rounded edge, gradually reduce pressure, and lift at the end of the stroke. Darker paint cannot correct the shape, while cutting bristles would damage the tool.

Stippling creates dots through a controlled press-and-lift action. When the brush is lifted vertically, its contact remains approximately circular; when it is dragged before leaving the surface, the contact travels sideways and produces an elongated mark. Option D is therefore correct. Paint purity, paper brightness, and brush size may affect appearance or scale, but they do not explain the directional stretching of individual dots.

Cross-brushing can add texture or even coverage, but repeated wet strokes disturb the paint film and mix pigments excessively. The governing control is timing and the number of passes. Option B is correct: allow the first direction to settle slightly, then use only a few controlled strokes in the second direction. More wet brushing, extra contrasting colours, or heavier pressure would increase pigment mixing and make the muddy result worse.

The governing concept is that brush direction, paint load and surface texture work together to show light. In dry brushing, a relatively dry brush carrying a light colour touches mainly the raised parts of rough bark, so those ridges catch the highlight while recesses remain darker. A white wash covers everything evenly, a black outline describes shape only, and complete wet blending removes the useful texture contrast. Therefore, option A is correct.

The governing concept is even brush loading and the different roles of the tip and belly. A dry tip may fail to release paint at the beginning, producing a broken or faint start; as the brush bends or pressure increases, paint from the loaded belly reaches the surface and the mark becomes fuller. Thus option B is correct. An even fine line requires a properly loaded tip, while a dot or a colourless surface does not describe this pressure-and-paint sequence.

The governing concept is pigment concentration: more water relative to paint produces a thinner, more transparent mark, while more pigment produces a denser, less transparent mark. Therefore, even with constant brush speed, changing the water-to-paint ratio changes the stroke’s opacity. Handle colour, the paper’s name and the subject do not directly alter the paint concentration in the loaded brush. Option C is correct.

The governing concept is following form: painted marks should describe the direction, thickness and softness of the object’s folds. Fabric bends, overlaps and catches light unevenly, so strokes should curve with each fold, vary in width, and soften at selected edges. Option D creates this natural variation. Straightening every fold, using only black, or removing shadows would flatten the fabric and reduce its volume.

The governing concept is controlled variation in texture. Bark, stone, soil and similar natural surfaces contain irregular changes in direction, scale, spacing and density. Repeating one identical stroke creates a mechanical pattern that does not describe those changes, so the texture looks artificial. Option A states the real reason. A single stroke is not always wrong, and the question does not imply that the brush or paper cannot carry paint.

A taper is governed mainly by gradual pressure control. A round brush spreads its bristles and deposits a wider mark when the hand presses harder; releasing pressure narrows the bristles and produces a fine branch tip. Since the stroke became thick at the end, the pressure must have increased or failed to release, making option C correct. Colour choice, paper choice and a clean brush do not directly determine this sudden change in width.

The governing principle in foliage texture is variation of mark, spacing and pressure. Repeatedly pressing a fan brush at one location deposits overlapping marks in the same area until individual leaf indications merge into a compact, flat-looking patch. Therefore, option A is correct. Varying the position, angle and pressure preserves broken edges and visual depth; repetition does not separate leaves or automatically increase depth, and it does not make the brush thinner.

The governing concept is form-following or contour-aware brushwork. When strokes run parallel to the outer contour, their direction echoes the way the rounded surface turns, giving the viewer a visual cue about its structure. This strengthens the illusion of curvature and three-dimensional volume, so option C is correct. Stroke direction does not make paint dry, change a round object into a square, or increase the thickness of the paper.

The governing concept is control of paint load, distance, and flicking force. A small load limits the amount of paint released, so the droplets remain fine. Holding the brush slightly farther from the surface increases the area over which those fine droplets land, while a gentle flick prevents oversized spots. Pressing or pouring removes control and usually produces larger, uneven marks. Therefore, option C gives the best balance between small size and wider spread.

The governing concept is deliberate variation: droplet size depends mainly on paint load, brush moisture, distance, and flick force. For small stars, use a lighter load and gentler flick; for larger stars, use more paint or a stronger, still controlled flick. Repeating one heavy motion cannot create both sizes, pouring is unpredictable, and a dry brush may not release paint. Thus option D is the most controlled method.

Negative painting defines a subject by painting the surrounding area rather than filling the subject itself. To preserve the first unpainted shape, its edge must be identified before the second layer is applied, and colour should be placed carefully outside that boundary. Covering the shape destroys the preserved negative form; wetting it can disturb the layer; uncontrolled movement can cross the edge. Therefore option A is correct.

Fine-line control depends on stable posture, relaxed muscles, and consistent movement, not merely on brush quality. Lightly resting the wrist or little finger reduces unwanted shaking, while controlled breathing prevents sudden tension. Moving very fast can reduce accuracy, and an unsupported hand is less stable. Holding far above the ferrule is useful for loose gestures but not for precise lines. Therefore option C is best.

The governing principle is matching the scale of body movement to the length of the mark. Fingers provide precise, small movements, but relying on them alone for a long expressive stroke can produce a cramped, interrupted, or stiff line. The wrist, elbow, or shoulder can create broader and smoother motion. Finger-only movement does not automatically change paint thickness or brush capacity. Thus option D correctly states the limitation.

A close grip shortens the effective lever between the hand and brush tip, giving greater precision for small details and controlled edges. Its trade-off is reduced freedom: the hand and wrist cannot make broad, relaxed gestures as easily, so expressive strokes may feel restricted. Grip position does not increase paint load or brush length. Therefore option A correctly presents the paired benefit and limitation.

The governing concept is the relationship between grip distance and motor precision. Holding the far end increases the lever length, making tiny movements at the tip harder to control and magnifying small hand movements. This grip is useful for loose, broad marks, but a pupil requires near-tip control and a steady small stroke. It does not change the brush tip, drying time, or paper absorbency. Therefore option B is correct.

The governing concept is process documentation for repeatable practice. A stroke sample is most useful when its brush, paint consistency, pressure, and other relevant conditions are recorded. Without the brush name and consistency, the learner cannot reliably reproduce the mark or explain why it looks different from another sample. The chart may still exist visually, but its technical evidence is incomplete. Therefore option D states the real disadvantage.

The governing concept is tool care and the effect of prolonged moisture. When a natural-hair brush remains submerged, water can enter the ferrule area and weaken glue or swell the wooden handle. Over time, the ferrule may loosen from the handle, even if the bristles appear usable. Thus option B is correct. The paper, palette, and frame are not parts of the brush and are not directly affected by this soaking practice.

The governing concept is preserving brush shape for controlled mark-making. During drying, bristles can remain bent, separated, or splayed if they are not guided back into shape. On the next use, the irregular tip will divide or wobble, making fine lines and precise edges difficult. Option C is correct. The other options concern paint brightness, paper absorption, or liquid capacity, none of which follows directly from failing to reshape the tip.

The governing concept is matching brush stiffness to paint consistency. Thick acrylic resists the movement of a brush, so very soft, long bristles bend and spread instead of transmitting a firm, controlled stroke. This produces weaker edges and less distinct marks. Option D is correct because it explains the interaction between bristle flexibility and paint resistance. The other options describe changes that do not result from brush softness.

The governing concept is selective emphasis through contrast. A focal point becomes prominent when it has greater visual weight than nearby areas. If every region receives equally thick and dark strokes, no area has a clear advantage; the viewer’s attention is divided and the intended centre weakens. Option C is correct. The other options do not describe the visual effect of distributing identical heavy marks throughout the composition.

The governing concept is visual direction and movement. Brushstrokes act like directional cues: repeated strokes leaning one way guide the eye in that direction. If the intended subject movement goes left to right but the dominant marks point right to left, the cues conflict, weakening flow and confusing the viewer. Therefore option D is correct. Stroke direction does not by itself change colour, shape, or brightness.