Across
- 3. a device that uses pulsed laser light to measure distance to a target
- 6. an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study
- 7. an ice sample that is typically removed from an ice sheet or a high mountain glacier
Down
- 1. a big difference in normal climate patterns over a long period of time
- 2. to break off
- 4. a person who wanted to end slavery, especially in the United States before the Civil War
- 5. to maintain something in its original or existing state