However, when asked in an interview what elevation was, the student could not respond. She also could not explain the connection between the pictures and the spheres. When the interviewer asked, "What do you think about when you hear the word elevation?" The student responded, "Like the stuff. … I forgot some of this." When asked to explain the bottom section of spheres, the student responded, "This is water (pointing to hydrosphere). And this one is rock (pointing to lithosphere). No, the rock fits atmosphere better, but I'm not sure." The interviewer then asked why balloons and a spider were included. The student responded, "I'm not sure. I don't know." Upon hearing this, the teacher saw that, just because students could match pictures with words, did not mean they understood that the spider represented all living things which made up the biosphere. The 100% showed performance without understanding.