Final answer:
Thick soups are opaque rather than transparent. It is due to ingredients like purees, cream, or roux, which make the soup dense and creamy, unlike clear soups that are transparent.
Step-by-step explanation:
Unlike clear soups, thick soups are opaque rather than transparent. Thick soups are made by adding ingredients that thicken the broth, such as purees, cream, roux (a mixture of flour and fat), or other thickeners like cornstarch or arrowroot. These ingredients contribute to the density and creaminess of the soup, resulting in an opaque appearance, which does not allow light to pass through as clear soups do.