The Praxis Middle School Science Exam is a 125-item, multiple choice test over six content areas: Scientific Inquiry, Methods, and History with 15 questions; Basic Principles of Matter and Energy with 15 questions; Physical Sciences with 30 questions; Life Sciences with 30 questions; Earth and Space Sciences with 22 questions; and Science, Technology and Society with 15 questions.  The exact number and distribution of questions may vary slightly.