science 10 Q2 SUMMATIVE

How are electromagnetic waves produced?

   

• Vibrating charge

• Current  

• Voltage source    

• Any disturbance

. Who contributed in developing equations that showed the relationship of electricity and magnetism?

      

• Albert Einstein

• James Clerk Maxwell

• André-Marie Ampere

• Michael Faraday

Which type of wave has the shortest wavelength?

• Microwave    

• Ultraviolet  

• Gamma ray  

• X-ray

Which of the following correctly lists electromagnetic waves in the order from the longest to the shortest wavelength?

          

• Gamma rays, ultraviolet, infrared, microwaves

• Microwaves, ultraviolet, gamma rays, visible light

• Radio waves, infrared, gamma rays, ultraviolet

• Radio waves, infrared, visible light, X-rays

What happens to the frequency of the electromagnetic wave if its wavelength increases?

            a.                                     b.

            c.                             d.

• It fluctuates  

• It increases as well 

• It remains the same. 

• It decreases.

. What is the main difference between a radio wave and a light wave?

• both electromagnetic wave   

• speed and wavelength

• speed and color    

• wavelength

What is the speed of the electromagnetic wave in a vacuum?

• same as the wavelength  

• Zero 

• Changing depending on the value of its wavelength  

• same as the speed of light

. In the electromagnetic wave, what is the direction of the propagation of the wave?

           

• Perpendicular to the electric and magnetic field directions

• Cannot be determined 

• Always to the right

• Parallel to electric and magnetic field directions

Which of the following forms of electromagnetic waves is used mostly in communication?

• Radio wave

• Gamma rays

• Infrared     

• Microwave

What type of electromagnetic wave is produced when electrons vibrate in an antenna?

• Infrared    

• Microwave

• Infrared        

• Radio wave