Here is Group Gimmel's task for find silence:
Find silence. Find a YouTube video you've never seen before and watch it without volume. You might want to find a music video, or a friend's footage from her trip to Asia, or clips from a favorite TV show, or someone's old home videos. As you watch, narrate in your head what you think might be happening. Then watch the video with sound to see what you missed. Feel free to repeat until you discover something surprising, or awesome, or breathtaking, or hilarious. Share your favorites on the blog.