Across
- 2. form of energy
- 8. a measurement of distance
- 9. method of heat transfer
- 12. exchange of carbon dioxide and oxygen in our bodies
- 13. coal, oil and gas (2 words, no space)
- 14. closest planet to the sun
- 15. should be worn when carrying out practical work
- 17. a state of matter
Down
- 1. burning in oxygen
- 3. at the centre of our planet
- 4. change only 1 of these in a fair test
- 5. turns cloudy
- 6. greenhouse gas in the atmosphere (2 words, no space)
- 7. the reaction plants carry out to produce glucose and oxygen
- 10. solids have a ______ shape
- 11. supplies heat in experiments
- 16. Our galaxy