29. A girl wanted to see small image of her face she need to use
a. place
b. convex
d. spherical
Ca concave
30.The longest wave length in the electromagnetic spectrum but have the lowest frequency.
d. waves
a. radio waves
b. magnetism
c. energy
31. A combination of two waves in one an electric field and a magnetic field wave.
a. energy
d. wave ler
b. electromagnetic waves C. sound waves
32. The number of crests that pass a given point with one second is described as the frequenc
a. wave length
b. energy
с. frequency
d. wave
33. Electromagnetic wave have crests and troughs similar to those of ocean waves.
The distan
is called ?
a. wave length
b. frequency
C. wave
d. sound
34. A portion or bond found at the higher frequency and of the radio spectrum but they are
distinguished from radio waves because of the technologies to access them.
a, radio waves
b. micro waves
c. radar
d. x-ray machine
35. A remote control uses light waves just beyond the visible spectrum of light.
a. Solar energy
b. Energy
c. Infrared energy d. Television
36. All electromagnetic radiation is light but can only see a small portion called ?
a, visible light
b. emergency light c. wave length
d. frequency
_37. Light has shorter wave length than visible light although UV waves are visible to the
such as bumble bees can see them.
a. sun
b. ultraviolet
c. light
d. energy
38. A source of a full spectrum of ultraviolet radiation which commonly subdivided into
a. sun
b. star
C. moon
d. visible light
9. Have much lighter energy and much wavelength than ultraviolet light and scientist
a. Ultra sound
b. X-ray
c. Microwave d. Radio
Unlike optical light and rays gamma rays cannot be captured and reflected by mirre
a. detecting gamma rays b. x-ray machine c. microwave d. radiow
An electromagnetic wave can also be described in terms of energy in units of mea
a. energy
b. ultraviolet rays
c. solar energy
The amount of kinetic energy needed to more an electron through one volt pote
1. star
b. electron volt c. electromagnetic waves
he most harmful and are almost completely absorbed by our atmosphere.
AV-C Rays
b. UV-B Rays
c. UV-C Rays
d. Ozor
s used as investigative tool of crime scene to help identify body fluids like b
sun
b. UV radiation
c. DNA
d. UV
smallest wave lengths and the most energy of any wave in electromagnet
amma rays
b.x-rays
c. energy
d. sur​