ACROSS

1. Degree of hotness of a body (11)
7. Vibration produces (5)
8. Chemical symbol of gold (2
10. The rang and direction of submarines inside sea water can be found using (5).
11. Rays are said to be soft when they have low energy .(4)
12. The sign of Leo is .(4)
13. The land surface is made up of aloss powder called.(4)
14. Material used in the preparation of tiles is.(4)
15. Fly ing Mammal.(3)

Down
2. device which detected the radiation of Heat.(11)
3. Red Planet.(4)
4. -----terns blue litmus paper into Red.(4)
5. Exploding star called.(9)
9. an imaginary line running from the North pole to South pole.(4)