https://padlet.com/mcnairscience8/science8 Made with an open mind en-us 2018-10-01 17:40:56 UTC 2025-10-20 08:26:19 UTC hello@padlet.com mcnairscience8 https://padlet.com/mcnairscience8/science8/wish/287770142
Title: 
-What kind of wave is used
-How it is used for the purpose

]]> 2018-10-01 17:42:34 UTC https://padlet.com/mcnairscience8/science8/wish/287770142 mcnairscience8 https://padlet.com/mcnairscience8/science8/wish/287955383 -use radio waves
-send signals to radio receivers that convert them into sound 
eg) fire, police, emergency systems and radio stations


]]> 2018-10-02 06:28:05 UTC https://padlet.com/mcnairscience8/science8/wish/287955383 https://padlet.com/mcnairscience8/science8/wish/288356786 Satellites are used to orbit the earth. They use different types of electromagnetic radiation to collect information about the earth. Weather satilites use reflected visible light and infrared radiation that comes from the earth to obtain information about the weather.]]> 2018-10-02 19:45:46 UTC https://padlet.com/mcnairscience8/science8/wish/288356786 https://padlet.com/mcnairscience8/science8/wish/288356827 - uses reflected light and infrared radiation
-They can detect the location and movement of clouds
- statellites orbit high above Earth’s surface
-

]]> 2018-10-02 19:45:51 UTC https://padlet.com/mcnairscience8/science8/wish/288356827 https://padlet.com/mcnairscience8/science8/wish/288356833 Electro magnetic radiation is used to study the universe.
The hubble space telescope orbits earth. It uses mirros to see things far away with a clear image of what it is.
The images are clearer than telescopes from earth, because of there's no atmosphere to blur the image.
Other parts of the telescope sense UV rays and infrared radiation.
The very large array is the largest radio telescope on Earth.]]> 2018-10-02 19:45:51 UTC https://padlet.com/mcnairscience8/science8/wish/288356833 rachele1450 https://padlet.com/mcnairscience8/science8/wish/288356903 -Luminol finds traces of blood in a crime scene
-Infrared photos create images by sensing temperature differences like finding weapons and objects in walls
-Investigators use x-rays, infrared, and UV rays to find art work.]]> 2018-10-02 19:46:01 UTC https://padlet.com/mcnairscience8/science8/wish/288356903 https://padlet.com/mcnairscience8/science8/wish/288357038 Luminal is used to find traces of blood at a crime scene, as shown in figure 3.3. This chemical undergoes a reaction with the iron in blood to give off visible light.]]> 2018-10-02 19:46:21 UTC https://padlet.com/mcnairscience8/science8/wish/288357038 https://padlet.com/mcnairscience8/science8/wish/288357494 -visible light and infrared radiation 
- Weather satellites use remote sensing to detect visible light and infrared radiation coming from earth.]]> 2018-10-02 19:47:21 UTC https://padlet.com/mcnairscience8/science8/wish/288357494 https://padlet.com/mcnairscience8/science8/wish/288357763 -uses infrared, x-rays, ultra violet 
-creates images by sensing temperature differences 
-find weapons in walls
-uncovers art forgeries

]]> 2018-10-02 19:47:56 UTC https://padlet.com/mcnairscience8/science8/wish/288357763 https://padlet.com/mcnairscience8/science8/wish/288357807 Diagnosing Disease 

]]> 2018-10-02 19:48:01 UTC https://padlet.com/mcnairscience8/science8/wish/288357807 https://padlet.com/mcnairscience8/science8/wish/288358386 Different kinds of EMR are used to identify medical problems 

.Radio waves and magnets work together

.Magnetic resonance imaging

.the sing also generated are used to create an image of the tissue being tested

.Unhealthy tissue looks different from healthy ones

.XRay imagining is useful for diagnosing conditions like broken bones and cavities in teeth.

.X rays are absorbed by bones and teeth but pass through body tissues

]]> 2018-10-02 19:49:13 UTC https://padlet.com/mcnairscience8/science8/wish/288358386 https://padlet.com/mcnairscience8/science8/wish/288358533 2018-10-02 19:49:33 UTC https://padlet.com/mcnairscience8/science8/wish/288358533