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問題一覧
1
A disturbance in the electric and magnetic field that propagates through space, transferring energy from one point to another.
Electromagnetic Wave
2
These are transverse oscillating waves composed of electric and magnetic fields.
Electromagnetic Wave
3
Where can we found the range of all types of EM radiation.
Electromagnetic Spectrum
4
Enumerate the types of EM Radiation
Radio Waves, Microwaves, Infrared, Visible Light, Ultraviolet Waves, X-rays, Gamma Rays
5
This region in the EM spectrum have the longest wavelength and the lowest frequency.
Radio Waves
6
This type of waves can be naturally generated in the atmosphere.
Radio Waves
7
This band is also called as the myriameter band.
Very Low Frequency Waves
8
These waves are used for military communications with submarines.
Very Low Frequency Waves
9
These are used for long-distance communications.
Low Frequency Waves
10
They are commonly used for amplitude modulation (AM) broadcasting and air traffic control.
Medium Frequency Waves
11
These are used international broadcasting stations.
High Frequency Waves
12
These are used in digital audio broadcasting and mobile radio systems.
Very High Frequency Waves
13
Has a frequency ranging from 300 MHz to 3 GHz and wavelengths ranging from 10 cm to 1 m.
Ultra High Frequency Waves
14
This have-sub-bands with different wavelengths and uses, such as L, S, C, and K.
Microwaves
15
This band under microwave is used for GPS
L-bands
16
These signals are transmitted by an antenna to a satellite which amplifies and re-transmits the signal to an antenna in other parts of the world.
Microwave Signals
17
These waves are applied in so many ways from texting to cooking, and to communications to the rest of the world.
Microwaves
18
Found between microwaves and visible light.
Infrared Wave
19
He first recorded the thermal measurement at the far end of the red spectrum.
William Herschell
20
This wave is used for remote sensing.
Infrared Wave
21
This wave is used for thermal imaging
Infrared Wave
22
This is the only part of the EM Spectrum that can be seen by the unaided eye
Visible Light
23
When this wave is emitted, certain patterns of lines and colors appear.
Visible Light
24
What are the three types of ultraviolet waves from the sun.
UV A, UV B, UV C
25
This can be used to examine most areas of the body.
X-ray
26
They're mainly used to look at the bones and joints, although they're sometimes used to detect problems affecting soft tissue, such as internal organs.
X-ray
27
This region is between the UV and the gamma regions.
X-ray
28
These are form of electromagnetic radiation with very high energy, which can cause significant changes at the cellular level.
Gamma Rays
29
This contains the highest energy of all the types of radiation in the EM spectrum.
Gamma Rays
30
This type of wave produced by objects with very high energy.
Gamma Rays
31
This radiation includes microwaves, radio waves IR, Visible Light, and UV
Non-ionizing Radiation
32
This radiation include X-rays and gamma rays.
Ionizing Radiation
33
This exposure happens when you get high amounts of radiation exposure over a very short period of time, such as a person undergoing cancer treatment.
Acute Exposure
34
This exposure occurs when a person is exposed to a small amount of radiation over a long period of time.
Chronic Exposure
35
What are the two types of Extremely Low Frequency Waves?
Naturally Occuring Elf, Artificial Elf
36
Enumerate the bands of Radio Waves
Extremely Low Frequency Waves, Very Low Frequency Waves, Low Frequency Waves, Medium Frequency Waves, High Frequency Waves, Very High Frequency Waves, Ultra High Frequency Waves
37
In this wave, the electric field is perpendicular to the magnetic field.
Electromagnetic Wave
38
This wave can be seen between UV Waves and Gamma Rays.
X-ray
39
Which has the higher frequency, the Microwave or the Infrared?
Infrared Wave
40
This waves have a wavelengths ranging from 1 cm to 1 km, with frequencies ranging from 30 gigahertz (GHz) to 300 kilohertz (kHz).
Radio Waves