Van Gogh painted Cypresses in 1889. Tall trees fill much of the upright canvas. Their dark shapes stand against a lighter sky.
Look at the repeated curved brushstrokes. They give your eyes routes to follow through the trees and clouds. Calling that effect movement is an interpretation; the painted scene remains still.
Art becomes easier to discuss when we connect an idea to visible evidence. Try saying, “These curving marks make the sky feel lively to me.” Someone else may notice something different.

