Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
How many types of electromagnetic waves are there
|
7
|
|
|
All EM waves are ______ waves
|
Transverse
|
|
|
Name all seven types of EM wave
|
Radio
Micro Infra red Visible light Ultra violet X-rays Gamma (Remember it as R-MIVUX_G) |
|
|
Who discovered infrared radiation?
|
Herschel in 1800
|
|
|
Who discovered ultraviolet radiation?
|
Ritter in 1801
|
|
|
Gamma rays are used to treat ______.
|
Cancer
|
|
|
Name the 3 types of ionising radiation.
|
Alpha
Beta Gamma |
|
|
Ionising radiation transfers _________.
|
Energy
|
|
|
Ultra violet light is used to detect ________.
|
Fluorescence
|
|
|
X rays cannot pass through _____ material
|
Dense.
|
|
|
Infrared radiation is used to monitor ______.
|
Temperature
|
|
|
4 uses of infrared radiation
|
Grills and toasters
Remote controls Monito temperature Security sensors |
|
|
Optical fibres use ______ to transmit data.
|
Infrared
|
|
|
Communications mainly use _____ waves
|
Radio
|
|
|
Radio waves for tv and radio have very _____ wavelengths
|
Short
|
|
|
Satellites and mobile phones use ________.
|
Microwaves
|
|
|
Properties of EM waves depend on their _________.
|
frequency
|
|
|
Genrally, if a wave has a higher frequency it will have ____ energy.
|
More
|
|
|
Which 4 types of wave can be harmful
|
Micro
Infrared Ultra violet Gamma/x rays |
