Vernier LabQuest 3 - Page 22

Using the LabQuest
®
App
16 Vernier Software & Technology
 Enable Data Marking can be used to mark points
of interest during a time-based data collection.
When enabled, the Mark Data button, ,
appears next to the stop button during data
collection. Tap to mark a particular point of
interest. After completing data collection, data
marks can be named using the panel to the right
of the graph. See Tag Data for more information.
 Photogate Mode —This mode is used for photogate experiments that also use a time-based
sensor. Examples include impulse and momentum and centripetal force experiments that
use a photogate and force sensor to collect the necessary data. See Photogate Timing .
Mode: Events with Entry
Sometimes experiments depend on a quantity other
than time. For example, a Boyle’s law experiment
investigates pressure as a function of the volume of
gas in a closed container.
TIP! In Events with Entry mode, no time information
is recorded.
 Name and Units —Enter a name and units for
each independent variable.
 Average over 10 seconds —You can choose to average data over ten seconds and report
the averaged reading. When selected, each time you keep a point, data are collected for
10 seconds and the average reading over that time period is recorded.
In Events with Entry mode, a Keep button, ,
appears next to the stop button during data collection.
Tap to record the sensor value (e.g., gas
pressure in the Boyle’s law experiment).
In response, you are prompted to enter a value for the
independent variable (e.g., gas volume in the Boyle’s
law experiment). Sensor data are plotted against the
independent variable.