Tertiary colours

The governing concept is colour mixing on the colour wheel. A tertiary colour is produced when a primary colour is mixed with the adjacent secondary colour, for example red with orange to make red-orange. Black and white make a neutral grey, while equal mixing of three primaries does not define a tertiary colour. Water changes a paint’s consistency, not its colour category. Thus, option A is correct.

The governing concept is the distinction between primary, secondary, and tertiary colours. Red and blue are primary colours, while green is a secondary colour made from yellow and blue. Red-orange is tertiary because it combines the primary colour red with the neighbouring secondary colour orange. Therefore, option C is the only correct choice; the other three belong to different colour categories.

The governing concept is the naming of tertiary colours from adjacent wheel colours. Red and orange are neighbouring colours, so their mixture is called red-orange, making option A correct. Yellow-green comes from yellow and green, blue-violet from blue and violet, and yellow-orange from yellow and orange. These distractors are plausible because they are also tertiary colours, but they use different component pairs.

The governing concept is that a tertiary colour usually carries the names of the two adjacent colours mixed to create it. Yellow combined with orange produces yellow-orange, so option B is correct. Red-violet, blue-green, and red-orange each result from different neighbouring pairs. Checking the two ingredients against the colour name eliminates the distractors and confirms the answer.

The governing concept is the relationship between adjacent colours and tertiary mixtures. Yellow and green combine to produce yellow-green, so option C is correct. Yellow is a primary colour and green is a neighbouring secondary colour, which gives the mixture its tertiary classification. Blue-green uses blue and green, while red-orange and blue-violet use entirely different pairs.

The governing concept is the naming of a tertiary colour from its two neighbouring components. Mixing red with violet gives red-violet, making option C correct. Blue-green is formed from blue and green, yellow-green from yellow and green, and yellow-orange from yellow and orange. Comparing the stated ingredients with each compound name shows why the other options cannot be correct.

The governing concept is the structure of the traditional 12-colour wheel. It contains 3 primary colours, 3 secondary colours, and 6 tertiary colours, giving the calculation 3 + 3 + 6 = 12. Each tertiary colour fills a space between a primary and an adjacent secondary colour. Therefore, option C, six, is correct; three refers to the number of primary colours.

The governing concept is the descriptive naming of tertiary colours. A tertiary colour is generally named by joining the names of the two colours used in its mixture, such as red-orange or blue-green. Writing only one component would omit important information, and a number does not identify the colour relationship. Therefore, option A correctly describes the naming convention.

The governing concept is the position of a tertiary colour between its two component neighbours. Red-orange is made by combining red, a primary colour, with orange, a secondary colour; therefore it is placed between red and orange on the colour wheel, making option A correct. Yellow-orange lies between yellow and orange, so option B names a different tertiary colour.

The governing concept is the classification of tertiary colours on the colour wheel. Yellow-orange is produced by combining yellow, a primary colour, with orange, a secondary colour. Therefore, its position is between yellow and orange, making option B correct. Yellow-green belongs between yellow and green, while blue-green belongs between blue and green; these plausible distractors name other tertiary colours.

The governing concept is the placement of tertiary colours between their two neighbouring colours. Yellow-green is made by mixing yellow, a primary colour, with green, a secondary colour. It therefore lies between yellow and green, so option A is correct. Green-blue, red-orange, and blue-violet are also tertiary colours, but each occupies a different adjacent pair on the colour wheel.

The governing concept is tertiary-colour placement. Blue-green is formed by mixing blue, a primary colour, with green, a secondary colour, so it is placed between blue and green on the colour wheel. Thus option C is correct. Yellow-orange occupies the yellow–orange interval, while red-orange occupies the red–orange interval; these distractors describe different tertiary colours.

The governing concept is that a tertiary colour lies between the two neighbouring colours from which it is formed. Blue-violet combines blue, a primary colour, with violet, a secondary colour. Therefore it is located between blue and violet, making option A correct. Green-blue, yellow-green, and red-orange are other tertiary colours and occupy different intervals on the wheel.

The governing concept is the arrangement of tertiary colours. Red-violet is produced by mixing red with violet and is therefore placed between red and violet on the colour wheel. Option B is correct. Yellow-green, blue-green, and yellow-orange are also tertiary colours, but their names identify different neighbouring pairs and consequently different positions on the wheel.

The governing concept is colour classification. Tertiary colours are formed by combining a primary colour with a neighbouring secondary colour; red-orange, yellow-green, and blue-violet are examples. Green, however, is a secondary colour formed by mixing blue and yellow, so it is not tertiary. Therefore option C is correct. The other three choices are valid tertiary colours.

The governing concept is tertiary-colour formation through mixing. Red-orange is made by combining red, a primary colour, with orange, a secondary colour. Thus the primary colour included in red-orange is red, making option A correct. Blue and yellow are also primary colours in this system, but neither is the named primary component of red-orange; black is not a primary colour here.

The governing concept is the composition of tertiary colours. Yellow-green is formed by mixing yellow, a primary colour, with green, a secondary colour. Therefore green is the secondary colour included in it, so option B is correct. Orange and violet are secondary colours as well, but they do not form yellow-green; red is a primary colour rather than a secondary one.

The governing concept is the formation of a tertiary colour by combining a primary and a neighbouring secondary colour. Blue-violet contains blue, the primary colour, mixed with violet, the secondary colour. Therefore option C is correct. Yellow is another primary colour, red helps form violet, and green is secondary, but none of these is the primary component named in blue-violet.

The governing concept is tertiary-colour composition. Yellow-orange is formed by mixing yellow, a primary colour, with orange, a secondary colour. Therefore orange is the secondary colour present, making option C correct. Green and violet are also secondary colours, but they are not components of yellow-orange. Blue is a primary colour and is not the required secondary component.

Blue-green is a tertiary colour formed from blue and green. Blue is a primary colour, while green is a secondary colour made by mixing blue and yellow. Therefore, blue is the primary colour present in blue-green, so option B is correct. The word green should not be selected merely because it appears in the name; it is not a primary colour in the traditional colour wheel.

Red-violet is a tertiary colour located between red and violet on the traditional colour wheel. It is produced by combining the primary colour red with the secondary colour violet. Therefore, violet is the secondary colour included in red-violet, making option A correct. Green and orange are also secondary colours, but neither is the neighbouring component used for this particular tertiary mixture.

Red-orange is a tertiary colour made by combining red and orange. If the mixture contains a greater proportion of red, its hue moves closer to red and therefore appears red-biased. Option B is correct. It would move toward yellow only if the yellow influence within the orange were increased. Blue and green are not the expected directions for this red-orange mixture.

Yellow-orange is a tertiary colour between yellow and orange. Increasing the amount of yellow makes the mixture visually closer to yellow, so option A is correct. It does not automatically become pure orange, because the proportion of yellow has increased rather than disappeared. A red-orange shift would require stronger red influence, and the mixture would not change to green without different pigments.

Blue-green is made by combining blue and green, so it is a tertiary colour. When more green is added, green has the stronger influence on the mixture and the visible hue shifts toward green. Therefore, option B is correct. Yellow may be associated with how green is produced, but simply increasing green in a blue-green mixture does not make the result shift directly toward yellow.

Blue-violet is a tertiary colour positioned between blue and violet. If the amount of blue is increased, blue becomes the dominant influence, so the resulting shade appears closer to blue. Thus option A is correct. More red would be relevant to a red-violet mixture, while yellow and orange are not the expected directions when blue is increased in blue-violet.