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Science and Technology Crossword 9

Click on a number in the crossword, write your answer, and then click "Enter". (Click "Hint" if you need help to get the next letter in each word.)
1    2       3   
4      5      
7       8     


1. One of the planets
4. Height above sea level
6. Convert into an ion
7. Numerical series midpoint
9. Geological time periods


1. Nuclear reactor fuel
2. Maximum displacement in a standing wave system
3. Performs a surgical procedure
5. Seed coats
8. Symbol of "nobelium"