Science and Technology Crossword 2

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          

Across

1. Relating to physics
5. Similar to "molecular"
6. Put into coded form
9. Rain falls _ _ earth.
10. Light generating device
12. A branch of mathematics

Down

1. Mercury, Venus, Earth, etc.
2. Fe is the chemical _ _ _ _ _ _ for iron.
3. Data stores
4. It comes from a volcano
7. Network intersection
8. Calendars show it
11. A beam of light