(Q).
By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.  David is getting ready to fly into space on a rocket. As the rocket shoots upwards, part of the mass falls away, allowing the rocket to go higher or lower?
(A).
higher


(Q).
As the amount of water increases, the melting point of rock decreases.  Rocks that have no water in them have a high melting point or low melting point?
(A).
high melting point


(Q).
The voice becomes deeper as the larynx in the throat grows larger.  A person that has a small larynx will have what type of voice High or low?
(A).
High