If picture file extensions are "file endings" then the other set should also be "file endings" not "file extensions"

Natural materials was classed as incorrect, as was man made materials. Correct answers given as natural fibres and synthetic fibres. There is no difference in definition.

Agree with Michelle and Mike - these need to have the option for multiple correct answers (e.g. "image file formats" as well as "picture file endings") - also, "natural fibres" was counted as incorrect because it was spelt "natural fibers" by the grid-setter - this either needs to be a global site that can transpose between UK and US spellings or it needs to separate them out more clearly (as "English" is the language I speak, not "UK" or "USA").

not good