Language is one field of science education research that has received a lot of attention lately. This is revealed by an increase in the number of papers that deal with this subject (Carlsen, 2007). One of the topics related to language in science education that still need to be further explored is reading and writing in science. Here, some questions that can represent border knowledge are: How school science texts can be characterized? Is there any relation between these texts and their reading comprehension? Possible answers to these questions have dealt with the linguistic features of science texts (