Science and Technology Crossword 6

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    6     
     7    8   
9    10    11    12    
        
13          
        

Across

1. Eighth planet from the sun
4. Rising current of warm air
7. Unit of digital data
9. Heart, lung, liver, etc.
12. What is 3.1415926535...?
13. Designer of machines, bridges, etc.

Down

1. Atmospheric gas
2. Type of graph
3. Oval shapes
5. Submerged valley forming a coastal inlet
6. Short for "abdominal muscle"
8. Chemical symbol for "titanium"
10. Megabyte, _ _ _ _byte, terabyte
11. Even smaller than "micro"