how many times a day does the average teen text?
For most teens, the big increase in screen time is on their cellphones. More than three-quarters of all teens own cellphones, according to a 2011 study conducted by Pew Internet and American Life Project. This is an increase from the 45 percent of teens who owned cellphones in 2004, Pew said. Teens use their cellphones to text (an average of 60 times a day, according to the Pew study), check Facebook, play games and listen to music. Vanessa Van Petten is the author and creator of the Web site Radical Parenting, which offers parenting advice written by kids.
How long does it take to drive from San Francisco California to Yosemite National Park? From San Francisco, California, it is almost a straight shot east  on Route 120, about 190 miles or 3 hours and 43 minutes to Yosemite  National Park.etween: San Francisco, CA and: Yosemite, CA Driving miles: 195 Driving time: 3 hrs 30 mins. - is based on traveling non-stop in good driving conditions.