The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment. The dependent variable is 'dependent' on the independent variable. As the experimenter changes the independent variable, the effect on the dependent variable is observed and recorded. For example, a scientist wants to see if the brightness of light has any effect on a moth being attracted to the light.
1 Remove ribs from refrigerator and start Traeger grill on smoke for 10 minutes. 2  Put ribs on grill and cook on smoke for 1 hour. 3  Change heat setting to 225-250 and cook for another 2 hours.4  Spray ribs with apple juice and cover with aluminum foil tightly and cook at 250-275 for another hour. Put ribs on grill and cook on smoke for 1 hour. 2  Change heat setting to 225-250 and cook for another 2 hours. 3  Spray ribs with apple juice and cover with aluminum foil tightly and cook at 250-275 for another hour.
The trick to great ribs is to cook them very slowly with the BBQ sauce on them. You can do this in an oven, just set the temperature to 225Â° F (about 107Â° C). I occasionally use an electric smoker, which cooks at about 200 to 225 degrees Fahrenheit. I've also used this method on my gas grill and in my oven. Cook the ribs for 4Â½ to 5 hours. The time it takes you to cook the ribs may vary depending on the true temperature of your grill, oven, or smoker, the temperature of the ribs when you start, and other factors. Baby back ribs take 30 to 45 minutes less than spareribs.