The aim of the study is to investigate the types of questions that preschool teachers used during the science-related activities and preschool teachers' behaviors in terms of wait-time. Through this study, the types of questions (lower level and higher level), the time that teachers allocate to their students to respond, and the teachers' responses to the students' answers were investigated. The study was conducted with six teachers working with six-year-old children in preschool institutions. In this qualitative study, the data were obtained through classroom observations. The findings of the study revealed that the teachers mostly asked lower level questions to the students and that they did not use the wait-time strategy effectively. Additionally, the findings showed that the teachers did not pay enough attention to the students' responses. The teachers allowed students answer the questions as quickly as possible without encouraging them to think over their answers. Moreover, the teachers answered the questions themselves when the students did not give the correct answers. Finally, the teachers mostly dealt with the children actively participating much more than the other students who were less attentive.