When you're viewing the Google Now screen, you don't have to
touch anything. Just say "Google."
Next, speak the terms to search for or the Voice Action to per-
form. For more details on Voice Actions, see
The ability to trigger a search or action by saying "Google" is
called hotword detection. To turn it off or on, start from the
Google Now screen and touch Menu > Settings > Voice > Hotword
IMPORTANT: To detect when you say "Google" to launch
Voice Search or Voice Actions, Google analyzes sound
picked up by your tablet's microphone in intervals of a few
seconds or less. The sound is immediately discarded after
analysis and is not stored on the device or sent to Google.
For more information about Voice Actions, see
"Voice Actions commands."
Search by typing
Type your query in the search box on the Home or Google Now
screen, or in Google Chrome's omnibox.
As you type, suggestions appear below the Search box.
The first few suggestions attempt to complete what you're typing:
To search for a suggestion immediately, touch it.
To search for the contents of the search field, touch the Search
icon on the right side of the keyboard.
NEXUS 7 GUIDEBOOK
"Use Voice Actions."
USE GOOGLE NOW & SEARCH
"Use Voice Actions"