Poster colour

Repeated corrections can build an overly thick, uneven film of paint and may disturb the surface beneath it. When the area has become visually heavy, the sound approach is to stop adding random layers, assess the design, and repaint or rebuild the section with a consistent mixture if needed. Option D is correct. More layers, excess water, or rubbing usually increase damage and unevenness.

A green mixture that looks too blue has a cool or blue bias. Adding a small amount of yellow shifts the mixture toward a more balanced green, but the correction should be tested in a separate sample because drying can change the apparent value and colour. Option B is correct. Black darkens, white lightens, and red can muddy the mixture rather than correcting the blue bias.

The governing concept is visual weight in lettering: apparent heaviness depends on the total shape, width, spacing, and the amount of negative space inside and around a letter, not only on equal stroke thickness. Dense forms or small counters can look darker and heavier, while open forms look lighter. Therefore option C is correct; colour names, paper height, and water-container size do not explain this perceptual difference.

The governing material concept is the response of paper fibres to moisture. Repeated wet layers make fibres swell; if moisture is excessive or distributed unevenly, different parts expand and contract at different rates, producing buckling or warping. Option D is therefore correct. Light colour, a small brush, or a limited colour scheme does not supply the moisture imbalance responsible for the deformation.

The water-to-paint ratio controls the mixture’s consistency, opacity, flow, drying behaviour, and the way the brush marks the paper. Recording the quantities allows the same visual result to be recreated later, which is especially useful when repairing or extending a poster. Option A is correct because it concerns repeatable working properties; the other choices describe effects that water cannot automatically produce.

Poster colour can cover drawing lines when it is applied with suitable opacity and an even, sufficiently thick layer. If the mixture is over-diluted, the brush carries too little pigment, or only one thin coat is applied, the pencil remains visible beneath it. B is therefore correct. Outline size, brush width, and the dryness of the paper do not by themselves explain inadequate coverage as directly as paint thickness and opacity do.

The governing concept is saturation in tint mixing. Too much white raises lightness but weakens the original hue, so the mixture loses brilliance and looks chalky. Adding a very small amount of the original colour restores saturation and depth while keeping the tint light; add it gradually and test after each addition. Black would darken and dull the mixture, while excess water would reduce poster colour’s opacity and control.

The governing concept is consistency of hue and value across a painted area. Preparing one sufficiently large, well-mixed batch before painting keeps the pigment, darkness, and proportion of ingredients uniform from beginning to end. It is wise to prepare a little extra because matching a dried mixture later is difficult. Separate brushes do not guarantee identical colour, added black changes value, and wetting paper is not the relevant planning step.

The governing concept is relating a shadow to the object’s local colour. A shadow should usually be a darker, controlled variation of that hue, sometimes supported by a nearby or complementary colour, so it remains visually connected to the surface. Option B achieves this relationship while allowing adjustment of depth. Pure black can look dead and disconnected, white is a highlight rather than a shadow, and excess water changes opacity instead of creating a convincing dark colour.

The governing concept is accidental colour contamination during opaque painting. If a brush still contains even a small amount of dark pigment, that residue mixes into the white paint and turns the fine line grey. A completely dry dark base normally helps a clean opaque highlight remain distinct, while a thin brush is appropriate for detail and thick paper does not by itself change white paint to grey. Washing and drying the brush before loading white prevents the problem.

The governing technique is controlled layering. Poster colour can disturb or mix with an underlying layer when a new detail is applied before that layer has dried, causing the light edge to spread. Thus adequate drying time between layers was not followed, making B correct. Colour harmony concerns how selected colours relate, symmetry concerns balanced arrangement, and negative space concerns unoccupied areas; none directly prevents wet paint from bleeding into a detail.

The governing concept is a value scale: an ordered sequence from dark to light while keeping the hue sufficiently related. Preparing five separate, measured mixtures allows each value to remain stable and lets the artist compare the steps directly. Arrange them from darkest to lightest and keep a little of each for consistent application. Guessing into one mixture makes earlier values difficult to reproduce, water mainly changes transparency, and changing the base hue destroys a coherent value sequence.

The governing concept is liquid and pigment control. When poster colour or diluted paint collects at the boundary of a painted area, evaporation leaves a higher concentration of pigment there, so the edge dries darker; this is called pooling or an edge-accumulation effect. Therefore A is correct. Proper opacity should produce even coverage, a flat sheet does not concentrate pigment by itself, and a clean brush reduces contamination rather than creating a dark border. Remove excess liquid gently before drying.

The governing concept is control of brush pressure and paint load during a continuous stroke. If the brush begins with too much colour or is pressed firmly, the band starts wide; as the load decreases or pressure becomes lighter, the stroke becomes narrow. Therefore, changing pressure and paint load is correct. White paper, opaque paint, and a round palette do not directly change the stroke width.

The governing concept is reactivation of a water-based poster-colour layer. Repeated brushing introduces water and friction, so the dry layer can soften and mix again. The best procedure is to prepare a coat of suitable, reasonably thick consistency and apply it with a few confident strokes, allowing it to settle. More water and rubbing increase the problem, while scratching damages the surface.

The governing concept is uneven drying caused by edge pooling. Excess liquid flows toward or remains at the boundaries, carrying and concentrating pigment there; the edges therefore dry darker while the centre becomes lighter. The correct prevention is to control paint loading, spread the colour evenly, and avoid liquid collecting at the edges. Adding water or repeated edge painting worsens the imbalance, and tilting can encourage pooling.

The governing concept is opacity and control of the underlying value. A thin white undercoat masks the dark base and creates a bright, light surface on which the poster-colour blue can appear clearer. Thus option A is correct. Adding black makes the blue darker, adding water reduces covering power, and transparent varnish does not provide the opaque light foundation needed for this correction.

The governing concept is controlled paint flow during lettering. Curves often receive extra paint when the brush slows down, pauses, or is pressed too firmly; the liquid then gathers in the rounded section. Reducing the paint load and pressure, while keeping a smooth continuous movement, prevents pooling. Adding water makes the paint runnier, pausing increases the deposit, and changing letter size does not correct brush control.

The governing concept of a value scale is progressive, visible separation between light and dark steps. If the second and third samples look alike, one mixture must be adjusted in a controlled direction: add white to lighten it or add the base colour, or another suitable darker component, to distinguish it. Checking a dried sample is useful because wet paint may look different. Treating both mixtures identically will not restore a clear step.

The governing concept is opacity and even coverage. If the red paint is spread too thinly at the edges, the white undercoat remains visible through it; red mixed visually with white appears pink. A dry white base is normally helpful, while pure red and thick paper do not explain the colour change. Apply an even, sufficiently opaque layer without repeatedly disturbing the edge.

The governing concept is finishing from the larger internal surface to the boundary. First correct thin spots, streaks, or uneven opacity inside the shape. Those additional strokes may spread toward or visually alter the edge, so the boundary should be inspected and refined last. Thickening the edge first can make it heavy, while adding water or erasing is unnecessary and may damage the work. Thus A gives the safest sequence.

The governing concept is visual rhythm, which depends on planned repetition, sequence, spacing, and variation. Equal shapes alone do not guarantee rhythm; if the colour order changes without a deliberate pattern, the viewer may lose the expected visual beat and the design can feel disjointed. Irregular sequence does not make paint transparent or alter paper buckling. Therefore A is the only suitable result.

The governing concept is uniform paint application. If the second coat is thicker, contains more pigment, or covers some places more fully, those areas absorb or reflect more colour and look darker. Therefore, uneven coverage is the main cause, making option A correct. A completely dry first coat generally helps prevent bleeding, while sufficient water and a clean brush do not automatically produce dark patches.

The governing concept is that a paint mixture is judged in interaction with its final surface, not only on the palette. The paper’s base colour can shift the perceived hue, while absorbency can draw in water and pigment, changing darkness, saturation, and edge softness as the paint dries. Thus option A is correct. A round palette, a small brush, or transparent water does not explain the colour change on the paper.

The governing concept is uniform resurfacing. If paint is added only to the old boundary, the thick patch can create a new visible ridge or outline. Applying a controlled coat across the entire area distributes pigment and value more evenly and conceals the earlier edge, so option B is correct. Rubbing with water may damage or disturb the paper, while folding it cannot correct the painted boundary.