Colour filling and blending

The governing concept is blending to reduce abrupt changes between colours. For a soft cloud effect, gentle blending allows adjacent light tones to merge gradually, producing rounded, airy transitions without a sharp outline. Hard straight lines and dark hard edges make forms look rigid, while scratching paper damages or alters the surface rather than creating a soft painted transition. Therefore, option B is the suitable method.

The governing concept is blending, in which adjacent colours are gradually joined instead of being separated by a hard boundary. Light overlapping strokes allow a small amount of one colour to merge with the next, producing a smoother transition and better control. Striking the paint can disturb the surface, keeping the brush away makes no mark, and pressing only vertically does not create a continuous blend. Therefore, option B is correct.

The governing concept is colour gradation, which means a gradual, smooth transition from one colour, shade, or tone to another. The change is blended so that a sharp boundary is not visible. Therefore, option C, Gradation, is correct. Drawing creates marks, cutting removes material, and printing transfers an image; none of these names describes a smooth colour transition.

Blending works by gradually softening the boundary between neighbouring colours. Moving the brush gently back and forth allows the wet or workable colours to meet and mix without creating a harsh line. Thus option D is correct. Cutting the paper changes its shape, keeping the brush dry prevents useful blending, and scraping removes colour instead of joining it.

Even colour filling requires adjacent brush strokes to meet or overlap slightly. If a gap remains between two strokes, the unpainted paper shows through as a white line or patch. Therefore option A is correct. A clean brush, new paper, or a long handle does not by itself create these gaps; the problem is the spacing of the strokes.

The key principle of even colour filling is continuous coverage of the surface. Neighbouring strokes should overlap slightly, so small spaces are covered and the colour appears uniform. Hence option B is correct. Strokes placed far apart leave gaps, scattered strokes make coverage irregular, and strokes only at the edge cannot fill the whole area.

The relevant brushwork principle is gradual release of contact. When the brush is gently lifted at the end of a stroke, less pressure and a smaller bristle contact area leave less paint, causing the mark to taper into a thin, pointed end. Therefore option A is correct. The other choices describe neither the normal result of lifting nor a useful stroke-ending effect.

The governing concept is gradual colour transition. Blending softens the boundary between neighbouring colours so that one tone changes progressively into another without a harsh edge. Therefore, option B is correct. Scratching removes or marks the surface, stamping transfers a repeated shape, and hatching uses sets of lines for tone; none of these primarily creates a smooth colour transition.

The governing concept is controlled, consistent application of paint. Moving the brush in one regular direction helps neighbouring strokes overlap predictably, producing a more uniform layer and reducing visible gaps, streaks, and accidental changes in texture. Therefore, option B is correct. Constantly changing direction can create uneven marks; circular movement is not always suitable for a flat fill; and painting without direction removes control rather than improving evenness.

White gaps appear when the brush marks do not overlap enough to cover the surface. Uneven, widely spaced strokes leave uncovered areas between one mark and the next, especially when the artist changes direction or pressure carelessly. The correct method is to use a suitable amount of paint and overlap neighbouring strokes slightly. A clean brush, correct paint quantity, or consistent direction does not by itself cause gaps.

The governing basic painting concept is colour filling: applying pigment within the boundary of an already closed shape. The aim is to cover the interior evenly while keeping the colour inside the outline. Therefore option A gives the correct name. Erasing removes marks, cutting changes the paper, and printing transfers an image or design; none of those describes brushing colour into the enclosed area.

The governing colour-application concept is blending, in which two neighbouring colours are gradually merged so the transition appears smooth rather than abrupt. This may be done with a suitable brush, a damp tool, or carefully overlapped layers depending on the medium. Option B is therefore correct. Shading mainly describes changes in light and dark, drawing creates lines, and collage joins separate materials.

The governing concept is using an outline as a visual boundary. A clear, continuous outline shows exactly where the colour should be placed, helping the artist stay within the intended shape; therefore, option C is correct. An outline does not dry the paint, thicken the paper, or change the length of the brush. It improves accuracy and makes the final coloured form cleaner.

The governing concept is controlling the paint-to-water ratio. When excessive water is added, the mixture becomes too thin and mobile; it can run toward the edges, spread into unwanted areas, and dry unevenly as patches. Therefore, option D is correct. Water cannot turn colour into metal, enlarge the drawn shape, or normally break the brush. A suitable amount preserves control and even coverage.

The governing concept is gradation, a controlled progression in colour value or intensity. When a light tone changes gradually into a darker tone without an abrupt break, the effect is called gradation; therefore, option B is correct. Blending is the process that can help create this smooth transition, while shape, printing, and cutting describe different artistic ideas or actions and do not name the colour change.

The governing concept is creating a soft transition by overlapping colour edges. Use light, controlled strokes across the meeting point, allowing the two colours to overlap gradually rather than leaving a sharp boundary. Thus, option C is correct. Letting both colours dry completely can preserve the hard line, a black line makes it stronger, and cutting the paper does not blend colour. Gentle pressure prevents muddy or damaged areas.

The governing concept is using gentle pressure to protect the paper while blending. Excessive rubbing can lift, roughen, or weaken the paper fibres; it may also disturb the paint and create a patchy or muddy appearance. Therefore, option D is correct. A smoother blend comes from light overlapping strokes, not force. Hard rubbing does not reliably increase shine or straighten the bristles.

The governing concept is even colour coverage. When small white gaps remain, the paint has not reached or covered every part of the surface, so the filling is incomplete or uneven. The correct answer is A. Correct blending produces a gradual transition, a dark colour concerns tone, and a clean edge concerns the boundary rather than uncovered areas.

The governing concept is uniform paint consistency. If the paint has a similar thickness and moisture level throughout the work, each stroke deposits colour more evenly and reduces light or dark patches. The correct answer is B. Changing consistency between strokes causes variation; completely dry paint cannot spread smoothly, while a watery mixture may become weak or run.

The governing concept of blending is a gradual transition between adjacent colour areas. The edges of the two wet or workable colours must meet so that the brush can soften the boundary and merge the tones. Therefore C is correct. Separate papers and closed containers cannot create a transition, and completely dry colours generally resist smooth blending.

The governing concept is controlled stroke direction. Repeatedly changing direction can make overlapping strokes, uneven pressure and visible brush marks, so the filled surface may look irregular. The correct answer is D. Colour does not automatically become lighter, paper size does not change, and a hole is not the normal result of varied brush direction.

The governing concept is preparation of tools and materials before painting. A clean brush carries colour without unwanted residue, and suitable paint spreads with better control, helping produce neat and smooth strokes. Therefore A is correct. A broken brush, dirty water and folded paper interfere with control or colour purity and are not requirements for good filling.

The governing concept is colour contamination during tool use. Residual paint in the brush mixes with the new colour, changing its hue, value or clarity; several mixed residues may make it look muddy. The correct answer is B. The new colour will not always become white, disappear from paper or change the physical length of the brush.

The governing concept is form-following brushwork. When strokes follow the curve of a round shape, they support its visual structure, keep coverage controlled and make the rounded form appear clearer. Therefore C is correct. Square directions do not follow the form, outward strokes risk crossing the boundary, and directionless marks usually create uneven filling.

The governing concept is matching brush direction to the structure of the shape. Straight horizontal or vertical strokes fit the straight sides of a square and help maintain even coverage within its boundaries. Thus D is correct. Circular marks and random splashes do not support the form, while strongly diagonal patches are less controlled for this basic square-filling exercise.