These science-themed Hink Pink riddles are a great way to develop your students’ vocabulary skills, improve their knowledge of synonyms, and challenge them to think critically. 4th & 5th grade science terms were used to create these Hink Pinks! This pack includes: 1) Task Cards (p 4-6) - 24 riddle task cards in color. 2) Task Cards (p 7- 9) - Task card set in B/W version 3) Student answer sheet & exit ticket (p 10-11) 4) Answer Key (p 12) * When printing, make sure to select "FIT" for best results. **If you'll be using these riddles with 4th graders, I strongly suggest to have the students work in small groups or in pairs since the riddles are challenging. Want more HInk Pinks? Hink Pinks- Fall. Hink Pinks- Winter. Hink Pinks- School. Great for centers, enrichment, or partner practice. Laminate them for a lifetime of learning fun!