Let’s practice what you have learned about experimental design. Read the following lab scenario. Identify the independent variable, levels of the independent variable, dependent variable, constants, experimental, control groups, and number of repeated trials.
Eduardo placed 450 mL of sand, potting soil, and a mixture of sand and soil into three separate 10 oz. Styrofoam cups. In each of the cups he placed a thermometer so that the bulb was 2.5 cm below the surface. He placed the three containers under identical heat lamps for an hour. Each cup was 15 cm below the heat lamp. The original temperature of the material in each container was 15°C. After heating the jars in three separate trials the temperatures of the containers were:
Click on the correct location on the graphic organizer below to match the term. If you need a hint, click on the “Hint” link in the graphic organizer.
