# Chapter 12. Detecting Black Holes

Map Learning Exercises

### Question How do we “see” black holes that develop from massive stars?

VMdJNqwoXDxdbYaGykro6EaO2r/Pike+OD4KTBeLgJ1coMm3JjmmH3uUfTI7UV2RhapzALRGu+6tYBdyTbt5JT7ZrdWYfqqRgoy1LjhyFG6WtgBqYBI5c9NJCrN+cGrzjXMmtVwIB6YkfZ7vdrSkzDHp/4q9Fra7CqJ9wLZYmtE=
{"title":"gamma","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"31,14,323,119\"}]"} {"title":"xray","description":"When matter begins to accrete around a black hole and fall into its gravity well, the gases begin to move very fast and emit X-ray radiation. It is important to remember that the X-rays are not being emitted by the black hole itself, but by the material falling into the black hole.","type":"correct","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,119,318,183\"}]"} {"title":"visible","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"25,179,317,219\"}]"} {"title":"infrared","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,222,318,290\"}]"} {"title":"microwaves","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"27,291,319,337\"}]"} {"title":"radiowaves","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"24,336,316,487\"}]"}
Correct.