Across
- 3. Newton’s ____ law: an object’s motion will stay the same unless a resultant force acts on it (5)
- 4. an alpha particle is the same as the nucleus of this element (6)
- 6. the current in an appliance normally flows through the ____ wire (7)
- 8. the ____ nuclear force is 100 trillion trillion trillion times stronger than gravity (6)
- 10. matter which has its properties (such as charge) reversed (10)
- 16. prefix shown with the letter m (5)
- 18. ____ radiation has enough energy to remove electrons from atoms (8)
- 21. SI base unit named after a French physicist (6)
- 22. the number of leptons in the Standard Model (3)
- 24. one of the colours of the earth wire (5)
- 25. the E in LASER (8)
- 28. a type of cancer treatment which uses ionising radiation (12)
- 29. the colour of the live wire (5)
- 30. planet covered in iron(III) oxide dust (4)
- 31. a semiconducting device that can emit light (3)
- 32. the only known astronomical object to harbour life (5)
Down
- 1. alternating current is constantly changing ____ (9)
- 2. a day on this planet is longer than a year on it (5)
- 5. a force that opposes an object’s motion (8)
- 7. measures the potential difference between 2 points (9)
- 9. a planet with a similar surface gravity to Mars (7)
- 11. the turning effect of a force (6)
- 12. the number of types of quarks (3)
- 13. natural satellites which orbit planets (5)
- 14. the resistance of a ____ resistor can be changed (8)
- 15. the resultant colour after mixing red and green light (6)
- 17. a different form of the same element (7)
- 19. a machine that converts mechanical energy to electrical energy (9)
- 20. nuclear ____ is when 2 nuclei join to create a heavier nucleus (6)
- 23. they are used to transmit the rotational effect of a force (5)
- 26. a cloud of dust and gas in space (6)
- 27. the lightest of all the quark flavours (2)