| A | B |
|---|
| altitude | height of an object above sea level |
| convert | to turn into something else |
| gradual | making slow progress in steps or degrees |
| thermometer | instrument for measuring temperature |
| triskaidekaphobia | fear of the number 13 |
| geology | the study of the earth |
| pyromaniac | someone who is crazy about fire |
| vision | the ability to see |
| biology | the study of life |
| autograph | to write your name |
| microscope | a tool to look at very small objects |
