Brush techniques

The governing concept is safe care of natural bristles. Repeated exposure to very hot water can weaken natural hairs and may also affect the adhesive that holds them in the ferrule. Therefore, option A is correct: the bristles can lose strength and their original shape. The other choices describe impossible or unrelated effects; hot water does not turn a brush into metal, lengthen its handle, or make paint permanent.

The governing concept is protecting the brush tip during storage. When a wet brush stands on its bristles, its weight and contact with the container press the hairs sideways; repeated or prolonged pressure can bend them permanently. Option B is correct. Colour darkness, handle drying, and ferrule shine are not the main consequences of this storage position. Drying flat or with bristles upward protects the point.

The governing concept is controlled practice and fair comparison. A stroke chart should usually change one variable while keeping the others as constant as possible. If pressure and angle change together, any difference in width, direction, or texture could come from either factor, so option D is correct. Immediate drying, transparent paper, and identical strokes do not explain the analytical problem.

The governing concept is negative space. In negative painting, the artist leaves the intended subject relatively unpainted and applies colour to the surrounding area. The contrast between the painted background and the reserved shape makes the subject visible, so C is correct. Filling inside the object would be positive painting, while erasing boundaries or drawing only a black outline does not describe the method.

The governing concept is edge control. Negative painting requires placing colour close to the reserved subject without crossing its boundary. A controlled round brush with a good point, or a small flat brush with a clean edge, gives predictable contact and allows short corrective strokes; therefore D is correct. A worn brush spreads unpredictably, a large fan brush is designed for broad texture, and an excessively dry stiff brush can scratch or deposit uneven paint.

The governing concept is the expressive direction of a brushstroke. Short, repeated horizontal marks are commonly associated with a level surface, rest, and visual stability because they lack strong directional thrust. Consequently A is the likely result. Rapid motion is better suggested by longer, diagonal, curved, or strongly varied marks; stroke direction does not automatically darken colour or turn every form round.

The governing concept is intentional mark-making. Expressive brushwork may be bold, loose, varied, or visibly energetic, but its direction, pressure, rhythm, and placement support the subject, composition, or emotion. Therefore B is correct. Carelessness means marks are uncontrolled or unrelated to the visual purpose; it is not defined by thinness. Expressive and careless brushwork are consequently not the same.

The governing concept is dry-brush texture. A brush carrying very little water or paint skims across the surface instead of flowing into every groove. The bristles touch the raised areas first, so pigment is deposited mainly there and the recessed parts remain comparatively bare. Therefore option A is correct; the paper, colour direction, and handle do not cause this selective mark.

The governing concept is continuous line control. A long thin line breaks when the brush has insufficient fluid colour, the stroke is made too quickly or slowly, or pressure changes unevenly. Loading the brush adequately and moving at a steady speed maintains a continuous paint film. Thus option D is correct; heavy pressure, changing paper, or repeated rubbing will not reliably restore a clean line.

The governing concept is form-following brushwork. Curved strokes imitate the direction in which a rounded surface turns, so the viewer reads the marks as wrapping around the object. This strengthens the visual impression of curvature, light, and volume. Therefore option A is correct. Stroke shape does not determine drying time, paint capacity, or the thickness of the paper.

The governing concept is pressure-and-lift control. Beginning with firm pressure spreads the brush hairs and deposits a broad amount of colour, creating the leaf base. Gradually reducing pressure while lifting allows the hairs to gather into a narrow mark and produces the pointed tip. Hence option C is correct. Starting lightly reverses the desired shape, constant pressure prevents tapering, and rotating in place does not create a leaf stroke.

The governing concept is uniform paint loading in a flat wash. If the brush begins with a full load and loses pigment as it travels downward, later strokes contain less colour and the lower area becomes lighter. Reloading with the same mixture and overlapping strokes helps maintain an even tone. Therefore option A is correct; paper thickness, a constant angle, or keeping the work upright does not normally create this gradient.

The governing concept is proper brush maintenance. Paint that dries near the ferrule hardens the bristle roots and can force individual hairs apart. With repeated use, the brush loses its designed point or edge, becomes difficult to control, and may produce irregular marks. Thus option B is correct. A dirty ferrule does not make the handle flexible, improve water absorption, or brighten the paint.

The governing brush-technique concept is controlled variation. Real grass blades differ in length, angle, thickness, curvature, and spacing, so repeating one identical mark creates a mechanical pattern. Varying the pressure, direction, and distance between strokes while keeping an overall rhythm makes the texture believable. Therefore option A is correct; colour instability, a round brush tip, or supposedly rough paper does not by itself explain the unnatural repetition.

The governing concept in stippling is tonal value through dot density. When the dots are placed progressively closer, less of the light paper remains visible, so the eye reads the area as gradually darker. Option C is therefore correct. Making dots suddenly larger or applying only black can produce harsh, uneven changes, while a long line is a different mark-making method and is not stippling.

Scumbling is based on applying a broken, irregular upper layer rather than covering the surface with an opaque, perfectly even coat. Gaps in that layer allow portions of the lower colour to show through, producing optical interaction, surface variation, and visual depth. Option D is correct. The technique does not dry the paper, clean the brush, or make the colour appear cheap; those choices do not describe its artistic purpose.

The governing concept is directional mark-making: strokes should respond to the structure and curvature of the object. On a rounded form, strokes that follow the surface help the viewer read its turning planes, while light and shade reinforce the same volume. Option A is correct. Random directions can flatten or confuse the form, and neither stroke direction nor modelling can be replaced by simply naming a colour.

The governing surface-care principle is to protect the paper fibres from mechanical abrasion. Heavy pressure and repeated back-and-forth rubbing roughen or lift the surface, especially when it is damp. Option C is the first correction: lighten the pressure, reduce unnecessary passes, and let each stroke do its work. Adding water can worsen damage, while brush colour and holding the ferrule do not address abrasion directly.

The governing concept is continuous brush movement. A flowing vine line depends on coordinated hand and wrist motion, steady pressure, and sufficient paint in the brush. If the hand repeatedly stops, the paint film breaks and visible pauses appear. Option D is therefore correct. Attractive colour, a large sheet, or a new brush does not inherently interrupt a line; poor movement control does.

Dry-brush technique uses relatively little paint or moisture, allowing broken marks to catch the irregular texture of the surface. Using different light and dark tones with directional strokes follows the bark grain and suggests raised and recessed areas. Option A is correct. An even wet surface removes the dry-brush character, while one black band or erased marks cannot describe varied texture and illumination.

The governing concept is brush control: the mark changes when the angle, pressure and contacting edge change. Light pressure with a narrow edge can create a thin leaf vein, while greater pressure or a flatter angle uses more bristles to produce the broad blade. Therefore option C is correct. Merely changing colour or washing the brush does not change the mark’s width, and folding the paper is irrelevant.

The governing principle is visual observation of water reflections. A calm lake tends to spread the image sideways, so reflection marks are usually more horizontal than the original object. Broken, soft strokes suggest the slight movement and loss of sharpness caused by the water surface. Thus option D is correct. Identical, dark, sharp or rigid strokes would make the reflection look copied rather than reflected.

The governing concept is consistent paint loading. If the paint-to-water ratio changes from one brush load to the next, some strokes deposit stronger pigment and look bright, while watery loads look lighter or duller. Option A is therefore correct. The handle colour, a written title and the brush’s round shape do not by themselves change the mixture strength. Preparing a uniform mixture helps keep a large area even.

A long liner brush is valued for producing flowing, continuous lines through the flexibility of its long hairs and the movement of the hand and wrist. A tight grip restricts that movement, making the brush drag or produce a stiff, broken line. Therefore option B is correct. Grip pressure does not rename the colour, increase water capacity or automatically make the line transparent; a relaxed but controlled hold is preferable.

The governing concept is the relationship between brush angle and contact area. At a flatter angle, many bristles touch the surface and create a wider mark. As the brush gradually becomes upright, fewer bristles make contact, so the stroke tapers and becomes thinner. Option C is correct. The angle does not erase the colour or shorten the bristles, and the stroke does not become wider as contact decreases.