. Read the statements given below. If the statement is true, write “T” on the line in front of the statement. If it is false, write “F” and rewrite the statement to make it true.

_____ 1. Electromagnetic waves do not need medium to transfer energy.
_____ 2. Most EM waves are invisible and undetectable.
_____ 3. X-Rays can be used to scan unborn babies.
_____ 4. Radiant energy spreads out from its source in all directions.
_____ 5. In general, the most dangerous waves are the high frequency ones.
_____ 6. Electromagnetic radiation includes only visible light waves.
_____ 7. The Sun radiates both visible energy and invisible energy.
_____ 8. X rays have more energy than gamma rays.
_____ 9. Radio waves, microwaves and ultraviolet waves all have longer
wavelengths than visible light.
_____ 10. Communication with satellites is an application of gamma rays.
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