Radio
1. Which of the following is TRUE about electromagnetic waves?
A. They need air to travel.
B. They can only travel through solids.
C. They can travel through empty space.
D. They are slower than sound waves.
C. They can travel through empty space.
2. What are electromagnetic waves made of?
A. Water and air
B. Sound and heat
C. Electric and magnetic fields
D. Atoms and molecules
C. Electric and magnetic fields
Which electromagnetic wave is responsible for sunburn?
A. Infrared
B. Visible light
C. Ultraviolet
D. Gamma rays
C. Ultraviolet
What part of the electromagnetic spectrum can be seen by the human eye?
A. Infrared
B. Visible light
C. Ultraviolet
D. X-ray
B. Visible Light
Which electromagnetic wave is commonly used in microwave ovens and satellite communication?
A. Radio waves
B. Microwaves
C. Infrared
D. X-rays
B. MICROWAVES
Which of the following waves has the longest wavelength?
A. Gamma rays
B. Ultraviolet
C. X-rays
D. Radio waves
D. Radio Waves
Which type of electromagnetic wave is used to see bones inside the human body?
A. Ultraviolet
B. Infrared
C. X-rays
D. Microwaves
C. X-rays
Why can electromagnetic waves travel through space, unlike sound waves?
A. They are stronger.
B. They don’t lose energy.
C. They don’t need a medium to travel.
D. They are made of sound particles.
C. They don’t need a medium to travel.
Which electromagnetic wave has a frequency just lower than visible light?
A. Ultraviolet
B. Infrared
C. Microwaves
D. X-rays
B. Infrared
Which electromagnetic wave has a frequency just lower than Infrared?
A. Ultraviolet
B. Infrared
C. Microwaves
D. X-rays
C. Microwaves
What electromagnetic waves are used to examine the crystal structure of solids?
X-rays are used to examine the crystal structure of solids.
Which section of the electromagnetic spectrum is absorbed from sunlight by the ozone layer?
Ultraviolet rays are absorbed by the ozone layer.
Which one of following EM waves has the highest frequency?
a) ultraviolet
b) infrared
c) x-rays
d) gamma rays
D. Gamma rays
All types of electromagnetic wave travel at the ________ through a vacuum (space) or air
Same Speed
- Approximately 3.0 x 10^8 meters per second
_______ have the shortest wavelength
Gamma rays
A suntan is a protective mechanism against which type of radiation?
Ultraviolet
The waves that form the _______ are grouped in terms of their wavelength and their frequency
Electromagnetic Spectrum
_______ have the longest wavelength
Radio waves
When it come to its frequency, Radio waves have the _________
Lowest frequency
When it comes to its frequency, Gamma rays have the _________
Highest Frequency
Electromagnetic waves are ______ waves
Transverse
Electromagnetic waves are generated by ________ particles that are in the state of acceleration.
electrically charged
Enumerate the 7 types of Electromagnetic Waves from shortest to longest wavelength
Gamma Rays
X-rays
Ultraviolet
Visible or light waves
Infrared
Microwaves
Radio waves
Waves ______ when they bounce off a surface
Reflect
As the speed increases, the
W________ I
Wavelength increases
Note: When a wave's speed increases, its wavelength also increases, provided the frequency remains constant.