1.electromagnetic waves_____?
a.include sound wave
b. travel at a speed of 3x10^8m/s
c.do not travel in vacuum
d.always need a medium to propagate

2.He showed experimental evidence of electromagnetic waves and their link to light.
a.Hans Christian Oersted
b.James Clerk Maxwell
c.Heinrich Hertz
d.Michael Faraday

3.At constant speed, how is wavelength and frequency of EM waves related?
a.The shorter the wavelength, the lower the frequency.
b.The longer the wavelength,the lower frequency.
c.The higher the frequency,The longer the wave length.
d.As the frequency either increases or decreases, the wavelength remains the same.

4.________ are bundles of wave energy.
a.photons
b.propagations
c.protons
d.non of these

5.This EM wave is divided into smaller regions called wave bands.
a.radio waves
b.infrared
c.microwave
d.visible light

6.Which of the following both use microwave and super frequency (SHF) radio wave?
a.micro wave oven
b.satellite communications
c.radar
d.TV transmission

7.Radar stands for_________
a.radio detection and recording
b.radio detection and ranging
c.radio destruction and ranging
d.radio destruction and recording

8.This EM wave is used to heat or cook food.
a.infrared
b.radio wave
c.micro wave
d.visible light

9.Which type of radiation was discovered by Sir Frederick Herschel?
a.infrared
b.radio wave
c.micro wave
d.visible light

10.What electro magnetic wave is sometimes called heat rays?
a.infrared
b.radio wave
c.micro wave
d. visible light

11.In infrared,what shades of color indicates regions of cold temperature?
a.red and yellow
b.yellow and blue
c.blue and green
d.green and red

12.In infrared,what shades of color indicate regions of warm temperature?
a.red and yellow
b.yellow and blue
c.blue and green
d.green and red

NOTE: Paki Sagot na po ngaun kailangan ko na po .. ibbrainliest ko ang maka TAMA ng lahat ng sagot..

NON SENSE WILL BE REPORTED!
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