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.
How to Cook Pork Ribs Using the Low and Slow Method. Start the charcoal 30 minutes prior to cooking. Prepare the grill for indirect grilling. Youâre aiming for a temperature of 225 to 250-degrees F. Place ribs bone side down on the grill grate or use a rib rack if youâre cooking several racks of ribs. If using a rib rack, place the meat side of the ribs facing the fire. Add the smoking chips and cover the grill. On average, baby back ribs will take about 4 hours while spare ribs need about 5. At the outset, your main goal is to watch and adjust the temperature. The heat will have a tendency to climb up to the 300-degree F range rather quickly.