Match each phrase with the correct term from the list of vocabulary words.
1. the modern version of the metric system
2. the amount of space occupied by an object
3. an agreed-upon quantity used for comparison
4. the amount of matter in an object
5. a variable that changes as another variable changes
6. a visual display of data.
7. a test set up under controlled conditions
8. a variable that does NOT change as another variable changes
9. mass per unit volume
10. an educated guess using what you know and observe