Worksheets6.3 Using Electromagnetic Waves
Total questions: 10
Worksheet time: 9mins
What are amplitude modulation and frequency modulation use for?
changing electromagnetic waves into heat signal.
changing electromagnetic waves into matter.
changing electromagnetic waves into electrical signal.
changing electromagnetic waves into super power.
What is the amplitude
2 mm
2 cm
1 mm
1 cm
What is the period?
1 second
2 seconds
0.3 seconds
0.6 seconds
What is the frequency?
0.67 Hz
1.67 Hz
3.33 Hz
99.5 MHz
What type of electromagnetic waves is used to send and receive radio and TV signals?
microwaves
light waves
radio waves
ultraviolet waves
Why does FM carrier wave produce better quality than AM carrier waves?
AM has higher frequencies and energy
FM has higher frequencies and energy
AM has higher antenna and amplitude
FM has higher antenna and amplitude
Which electromagnetic waves is use to produce the image?
radio
infrared
microwave
X-ray
GPS and cell phones technology mainly use which type of electromagnetic waves?
radio waves
ultraviolet waves
light waves
microwaves
Night imaging, thermal imaging, and earth imaging uses which type of of electromagnetic waves?
infrared
ultraviolet
microwave
radio wave
Extremely high energy electromagnetic waves use in positron emission tomography (PET) scan in hospitals.
microwaves
X-rays
gamma rays
ultraviolet
