| A | B |
| audible | heard or able to be heard |
| aud | hear |
| astr | star |
| graph | write |
| audience | group of people watching something |
| audio | the sound that is heard on a radio |
| audition | short performance to show your talents |
| auditorium | large room or building |
| asterick | a symbol used to indicate that more information is at the bottom of the page |
| asteroid | a small planet |
| astronaut | a person who travels in space |
| astronomer | a person who studies planets |
| astronomical | extremely large |
| autograph | signature of someone famous |
| graffiti | pictures or words on a wall or building |
| graphite | the black substance in pencils |
| paragraph | part of a piece of writing that is about one topic |