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.
Grilling spare ribs can take up to six hours, says AmazingRibs.com, while baby back ribs may take as long as four hours to grill. To cut down on the grilling time, you can steam ribs up to two days in advance.Pre-steamed ribs can be grilled in approximately 15 minutes, according to Good Housekeeping. Pork and beef ribs are high in cholesterol and saturated fat.rilling spare ribs can take up to six hours, says AmazingRibs.com, while baby back ribs may take as long as four hours to grill. To cut down on the grilling time, you can steam ribs up to two days in advance.