[header] How to close tabs on kindle fire [title] Launch your browser, such as silk, on your kindle fire. [step] You'll need to be in your internet browser in order to close tabs. The most common browser for kindle, the one that comes pre-installed, is known as silk. 
[title] Turn the kindle so that it is in portrait mode. [step] Hold the device so that it is longer than it is wide, or so the long side is pointing up.