| A | B |
| analyze | to break down into parts in order to study |
| apprehensive | worried or uneasy about what might happen |
| coincide | to be in the same place or occur at the same time |
| compose | to create or write, as a poem or song |
| disk | any thin, circular object |
| envelop | to hide or cover on all sides |
| exist | to be real |
| extraordinary | very unusual; remarkable |
| fuse | to join together by or as if by melting |
| mere | nothing more than;only |
| revolve | to go around something in a circle |
| scale | an instrument for measuring weight |
| solar | of or having to do with the sun |
| trace | to copy by following the lines of a drawing through thin paper |
| velocity | rate of movement; speed |