GLOSSARY CROSSWORD

5. He was a scientist who developed the first vaccine, helping protect people from smallpox.
6. The study of how traits are passed from parents to children through DNA.
7. The process of giving a person a vaccine to help protect them from a disease.
9. A Greek scientist who figured out how big the Earth is by using shadows and math.
12. The special shape (like a twisted ladder) of DNA, which carries instructions for how living things grow and work.
13. He helped invent the telegraph and created Morse code, a way to send messages using dots and dashes.
15. The distance all the way around the Earth, like a big circle.
17. The study of the Earth, its land, water, and people.
18. An ancient people who lived in Mesopotamia and invented one of the first systems of writing.
20. A giant network that connects computers all around the world to share information.
21. The information, facts, and understanding we get by learning and studying.

1. A machine that makes many copies of writing or pictures quickly.
2. He invented the World Wide Web, which made the internet easier to use.
3. She was a scientist who helped discover the shape of DNA using X-ray images.
4. A substance that helps protect the body from certain diseases by making it stronger against them.
8. Sharing ideas, thoughts, or information with others, by talking, writing, or using technology.
10. A set of letters used to write a language, like A to Z in English.
11. An old way to send messages over long distances using wires and electrical signals.
14. Bringing things or people together, like computers, ideas, or friends.
16. The man who invented the first printing press in Europe around 1440.
19. A way of using symbols or letters to show words and ideas so they can be read.