1. Chapter 12 Inventions Vocabulary

2. innovation noun a new way of doing something

3. telegraph noun a device that uses electrical signals to send messages over wires

4. broadcast noun a program sent from a radio or television station

5. irrigation noun the use of ditches, pipes, or canals to bring water to dry land to help crops grow

6. biotechnology noun a science that uses living things (plant or animal cells or bacteria) to make products such as medicine or food

7. hybrid vehicle noun a car or truck that runs on both gasoline and electricity

8. rille noun a valley on the moon

9. trench noun the deepest part in the ocean floor

10. genius noun a person with exceptional intellectual ability or creativity

11. codex noun an ancient picture book often made of tree bark or animal hide

12. peculiar adjective or adverb unusual; strange, or odd