Tertiary colours

Correct answer: A. Yellow and green

Explanation: The governing concept is the colour-wheel position of a tertiary colour. Yellow-green lies in the interval between yellow and green, so option A is correct. Yellow-orange occupies the interval between yellow and orange, green-blue between green and blue, and red-violet between red and violet. These comparisons show why the other three options refer to different tertiary colours.

Correct answer: B. Green and blue

Explanation: The governing concept is that a tertiary colour occupies the interval between its two neighbouring colours on the colour wheel. Blue-green is positioned between blue and green, which is the same pair written in reverse order in option B. Yellow-green lies between yellow and green, blue-violet between blue and violet, and red-orange between red and orange, so the remaining options are incorrect.

Correct answer: B. Blue and violet

Explanation: The governing concept is the placement of a tertiary colour between its neighbouring colours. Blue-violet lies in the section between blue and violet on the colour wheel, so option B is correct. Yellow-orange belongs between yellow and orange, yellow-green between yellow and green, and red-orange between red and orange. Therefore none of those alternative pairs describes blue-violet’s position.

Correct answer: A. Red and violet

Explanation: The governing concept is the relationship between a tertiary colour and its two neighbouring colours. Red-violet appears in the transition between red and violet on the colour wheel, so option A is correct. Yellow-green lies between yellow and green, yellow-orange between yellow and orange, and blue-green between blue and green. Those alternatives therefore represent different tertiary positions.

Correct answer: C. Red-orange

Explanation: A tertiary colour is formed by mixing a primary colour with a neighbouring secondary colour on the colour wheel. Red-orange combines red and orange, both associated with warmth, so it produces a warm visual effect. Blue-green, blue-violet and yellow-green are generally treated as cool or cooler blue- and green-influenced colours. Therefore, option C is correct.

Correct answer: C. Blue-green

Explanation: Tertiary colours are made by mixing a primary colour with an adjacent secondary colour. Blue-green contains a strong blue and green influence, so it is normally classified as a cool colour. Red-orange, yellow-orange and red-violet contain stronger warm red or yellow influences. Thus, option C is the best answer for a cool tertiary colour.

Correct answer: A. Yellow-orange

Explanation: A sunset is commonly represented with warm light near the horizon. Yellow-orange is a tertiary colour made by mixing yellow with orange, and it can suggest glowing sunlight, illuminated clouds or a warm horizon. Blue-green, blue-violet and yellow-green may be useful in other scenes, but they do not express the warm sunset effect as directly. Therefore, option A is correct.

Correct answer: B. Blue-green

Explanation: Blue-green is a tertiary colour formed from blue and green, and it can represent the cool, bluish-green appearance of sea water. Red-orange, yellow-orange and red-violet are warm or reddish alternatives that may suit fire, sunsets or flowers, but they do not normally suggest water as directly. Hence, option B is the most suitable answer.

Correct answer: A. Yellow-green

Explanation: Soft new leaves are often suggested with a light, fresh yellow-green because young foliage has a tender green appearance with a yellowish quality. Yellow-green is a tertiary colour related to yellow and green. Red-violet, blue-violet and red-orange are darker or warmer choices and are less suitable for this particular natural subject. Therefore, option A is correct.

Correct answer: B. Blue-violet

Explanation: A deep evening sky is commonly shown with cool, dark blue and violet influences. Blue-violet is a tertiary colour that combines blue with violet, so it can communicate depth, coolness and the fading light of evening. Yellow-green, yellow-orange and red-orange are brighter or warmer choices and are less suitable for the stated atmosphere. Thus, option B is correct.

Correct answer: A. Red-violet

Explanation: Deep pink or magenta-like petals can be represented effectively with red-violet, a tertiary colour formed by mixing red with violet. Its red component provides warmth while violet deepens the hue. Blue-green and yellow-green suggest foliage or cool areas, while yellow-orange suggests a different warm range. Therefore, option A is the most suitable answer.

Correct answer: B. Red-orange

Explanation: Brick and fire are commonly associated with warm red and orange hues. Red-orange is a tertiary colour combining red and orange, so it can show heat, glow and a warm surface effect. Blue-green and blue-violet are cool colours, while yellow-green is generally linked with foliage or fresh natural tones. Hence, option B is the best answer.

Correct answer: C. Orange

Explanation: A tertiary colour is produced by mixing a primary colour with the adjacent secondary colour. Yellow-orange is made by combining primary yellow with secondary orange. Therefore, the required secondary colour is orange, making option C correct. Green would combine with yellow to produce yellow-green, violet with red produces red-violet, and blue is a primary colour rather than the requested secondary colour.

Correct answer: C. Violet

Explanation: Red-violet is a tertiary colour formed by mixing the primary colour red with the neighbouring secondary colour violet. Thus, violet is the required secondary colour and option C is correct. Orange mixed with red produces red-orange, while green and yellow do not provide the adjacent secondary component needed for red-violet. This follows the colour-wheel rule for making tertiary colours.

Correct answer: A. Green

Explanation: The governing concept is tertiary-colour formation: a tertiary colour is produced by mixing a primary colour with a neighbouring secondary colour. Blue-green therefore contains blue and green, so option A is correct. Yellow mixed with blue gives a greenish mixture rather than the named blue-green in this classification, while red or violet would shift the result toward different hues. The compound name itself provides the key.

Correct answer: B. Green

Explanation: The governing concept is the naming and formation of tertiary colours. Yellow-green is made by combining yellow, a primary colour, with green, the adjacent secondary colour. Thus option B is correct. Yellow mixed with orange would produce yellow-orange, not yellow-green; violet or red would create mixtures with different colour relationships. Reading the two parts of the compound colour name is the quickest valid method here.

Correct answer: C. Blue

Explanation: The relevant concept is tertiary-colour formation on the colour wheel. Blue-violet is formed from blue and violet, so option C is correct. Violet is already a secondary colour, and blue is the neighbouring primary colour used to create this tertiary hue. Red would move the mixture toward red-violet, while yellow or green would produce other relationships. The two words in the colour name identify the required components.

Correct answer: B. Orange

Explanation: The governing concept is the colour-wheel definition of a tertiary colour. Red-orange combines the primary colour red with the neighbouring secondary colour orange, so option B is correct. Red mixed with violet would move toward red-violet, and mixtures with blue or green would not have the red-orange relationship. In a compound colour name, both named colours usually indicate the colours that are blended to make it.

Correct answer: A. By combining the names of two related colours

Explanation: The governing concept is tertiary-colour classification and naming. Tertiary colours are generally identified by combining the names of the two neighbouring colours used in their mixture, such as red-orange, yellow-green, or blue-violet. Therefore option A is correct. A number alone does not describe the hue, and a tertiary colour is not named only after one primary colour or after black. The compound name communicates its colour relationship.

Correct answer: A. Between primary colours and adjacent secondary colours

Explanation: The governing concept is the arrangement of colours on the colour wheel. A tertiary colour occupies the interval between a primary colour and the adjacent secondary colour formed near it; for example, red-orange lies between red and orange. Therefore option A is correct. Tertiary colours are not placed between neutral colours, black and white, or simply between two primary colours. Their position shows a gradual transition between neighbouring hues.

Correct answer: A. More detailed and gradual

Explanation: The governing concept is continuity of hue on the colour wheel. Tertiary colours add intermediate steps between primary and secondary colours, so the wheel becomes more detailed and shows smoother, more gradual transitions. Option A is therefore correct. They do not turn the wheel black, white, or colourless; those choices remove colour rather than explain the additional hues. Tertiary colours make relationships among neighbouring colours easier to observe.

Correct answer: C. Yellow-green and blue-violet

Explanation: The governing concept is classification by colour type. Yellow-green and blue-violet are both tertiary colours because each combines a primary colour with a neighbouring secondary colour, so option C is correct. Red and yellow are primary colours; green and orange are secondary colours; and blue is primary while violet is secondary. The compound names in option C are a useful clue, but the classification also follows their positions on the colour wheel.

Correct answer: C. Red-orange yellow-green blue-violet

Explanation: The governing concept is the classification of colours into primary, secondary, and tertiary groups. Red-orange, yellow-green, and blue-violet are tertiary colours because each is named from a primary colour joined with an adjacent secondary colour. Therefore option C is correct. Red, yellow, and blue are primary; orange, green, and violet are secondary; and black, white, and grey are neutral colours rather than tertiary hues. This comparison rules out every other group.

Correct answer: A. Red-orange

Explanation: The governing concept is the effect of colour proportion in a mixture. Orange already lies between red and yellow, and adding a little more red shifts the hue toward the red side. The resulting named tertiary colour is red-orange, so option A is correct. Yellow-green, blue-green, and blue-violet contain green or blue components and cannot describe a mixture of orange with additional red. The direction of the added colour determines the new hue.

Correct answer: B. Yellow-green

Explanation: The governing concept is proportional colour mixing. Green is shifted toward yellow when a little more yellow pigment is added, so the resulting intermediate hue is called yellow-green. Option B is correct because yellow becomes the dominant component in the green mixture. Red-violet, blue-violet and red-orange require different neighbouring colour combinations, so they do not match this change on the colour wheel.