Across
- 1. You can’t touch it, but it follows you when there’s light.
- 6. A scientist known for the theory of relativity.
- 7. A website people use to find information quickly.
- 9. A sound that comes back after you shout in a big empty place.
- 10. A green plant with sharp parts that lives in very dry places.
- 11. You use it to open something digital, but you don’t say it out loud.
- 16. The process when something solid becomes liquid because of heat.
- 17. Something your eyes do quickly to keep them wet and clean.
- 18. The planet we live on.
Down
- 2. The gas we breathe in to stay alive.
- 3. You can't see it or hold it, but it never stops moving.
- 4. The star that gives us light and heat every day.
- 5. A place with little rain, very hot in the day, very cold at nigh
- 7. A shiny yellow metal that is very expensive.
- 8. You can see through it, but if you drop it, it breaks.
- 11. A bird that can’t fly but swims very well.
- 12. What you need to connect your device to the internet without a cable.
- 13. What you do to turn trash into something useful again.
- 14. A small round model of the Earth.
- 15. You look into this to see your own reflection.