Find a photographic image from any source (not a painting or drawing and not an advertisement or an image with words in it) that you find interesting or compelling in some way. Describe your reaction to it in terms of what it shows, the look and feel of it, why you think it was created, and any other information you know or can find out that seems relevant to it.
What is the most important aspect of each approach in terms of the image you picked. For Content, what do you notice or recognize that is most significant for the impact? For Appearance, what aspect of the look or feel of the image seems important to you? For Use, why do you think the image was created in the first place? For Context, is there anything else you know about the image that you feel affects its impact for you?