Answer:
9. b
10. d
11. a
12. a
13. c
14. a
15. c
16. d
17. b
Explanation:
9. from the name itself. EM (electromagnetic waves): electric and magnetic fields
EM radiation is so-named because it has electric and magnetic fields that simultaneously oscillate in planes mutually perpendicular to each other and to the direction of propagation through space (irina.eas.gatech.edu)
10. interference is found in all types of waves
11. red light waves are scattered the least by atmospheric gas molecules
12. diffraction is more pronounced through a small opening, where small is compared to a wavelength
13. they all travel in the same speed in a vacuum
14. this is the reason kung bakit mas mainit sa pakiramdam magsuot ng black shirts than white shirts
15. electromagnetic waves do not require a medium to propagate. this means that em waves can travel not only through air and solid materials, but also through the vacuum of space
16. assuming the two radiations are in a vacuum, the main difference between a radio wave and a light wave is the frequency and wavelength
17. the key to this question is to realize that the beam of light is traveling from a denser medium (water) into a less dense medium (air). when this happens, the bending is away from the normal.
