Across
- 2. What is transferred by all waves
- 4. The centre of an atom which contains protons and neutrons
- 8. What muscles can do
- 9. Light changing direction when travelling across the boundary of two materials with different densities
- 10. Where red and white blood cells are made
- 11. Positively charged sub-atomic particle
- 14. The closer these lines are together the stronger the magnet is
- 15. Muscles which work in pairs to cause movement are called ……………… muscles
- 17. Found on the left and centre of the periodic table
- 18. Works in a pair with your triceps to bend and straighten your arm
- 21. Vertical columns in the periodic table which contain elements with similar properties
- 22. A type of lens which is wider in the middle than at the edges
Down
- 1. Regions of a magnetic material which must be aligned to make a magnet
- 3. A negatively charged particle which is found in energy levels around the nucleus of an atom
- 5. Scientific name for your skull
- 6. One of the roles of the skeleton
- 7. A chart containing all the known elements
- 12. Back of the eye where light is focused and which changes light into electrical energy
- 13. Imaginary line at right angles to a mirror from which we measure angles
- 15. What two opposite magnetic poles will do
- 16. Upside down
- 19. Horizontal rows in the periodic table
- 20. What two like magnetic poles will do