Can a snake move in a straight line or backwards?

From what I know, snakes do not crawl backwards. They can however pull their head back as in hiding in underbrush or other dark places, which can give the illusion of crawling backwards. To answer your question about snakes moving on loose sand I'll ask you, "How do you move on loose sand?" By setting your feet at a sideways stance, it is easier to climb up a hill of sand. This key Word of 'sideways' gives insight into how snakes move on sand. There are sidewinders- snakes that look like they moving sideways, common in sandy areas. Other snakes will use a wide sliding pattern to provide more grip, as opposed to trying to 'walk' straight along sand. Snakes do climb trees. Snakes can 'jump' to a certain degree. There are two different types of jumping, one is a basic strike or lunge. This strike comes from the snake coiling itself up and flexing itself forward to attack. The other one is somewhat un-common. The snake will drop out of a tree and land upon its prey. I've heard that some snakes have been known to flatten themselves out on a tree and wait for a high wind and glide down unto the ground (i think this is just an urban legend though). Answer: idk how my snake does it, but she slithers backwards into her log.