UnScramble this Word: a d l s r e s d?

Questions

Science To make a car go backwards you have to put it in what gear?

Science What are these: Ceres, Juno, Iris, and Flora?

Science What branch of science studies the motion of air and the forces acting on objects in air?

Science What did Lewis E. Waterman invent in 1884?

Science What does the "lithosphere" refer to?