Question

Cross-hatching provides an illusion of various ______(1)_______, while impasto provides an illusion of ______(2)_______.

Answer 1

1= form and light 
2=depth

refer to these websites for more info on both illusions 
1- thevirtualinstructor.com/hatchingcrosshatching.html
2- www.udel.edu/artfoundations/beg_paintingtechniques.html