Across
- 1. The force (a push or pull) that acts between magnets (including the Earth) and magnetic objects
- 5. The charge on an atom or object with more electrons than protons
- 6. The constant speed reached by a falling body.
- 8. A magnet that stays magnetic only while it touches a permanent magnet, or one that is magnetic for a very short time
- 10. A mixture of a metal with a non-metal or another metal
- 16. The charge on an atom or object with fewer electrons than protons.
- 17. A map of lines showing the size and direction of a magnetic force.
- 20. A measure of the amount of material in an object of substance
- 22. A force that acts only between objects that are touching
- 23. The force of air pushing on an object as the object moves through the air.
- 26. Substance with large particles that can slide easily over each other.
- 28. A very small particle that makes up all things.
- 29. The force of attraction that exists between any two bodies in the universe that have mass.
- 30. A force that acts between objects even though the objects are not touching
- 32. Tiny, but heavy, particles found in the nucleus of an atom.
Down
- 2. Very light, negatively charged particles inside an atom.
- 3. A non-contact force of electric charges at rest.
- 4. A force that acts against the movement of an object.
- 7. An opposing force
- 9. To push, pull or twist
- 11. The ‘firmness’ of the surface of a liquid created by the attraction between particles at the surface.
- 12. A push, pull or twist. Forces are measured in newtons
- 13. A force that acts against the movement of an object.
- 14. A magnet that retains its magnetic effect for many years
- 15. Tiny, but heavy, particle found in the nucleus of an atom.
- 18. A substance that flows and has no fixed shape.
- 19. The unit for measuring forces
- 21. A measure of the size of the gravity force pulling an object towards the centre of a massive body, such as the Earth.
- 24. A force which keeps objects floating
- 25. The force at the Earth’s surface is the pull on objects near its surface towards the centre of the Earth
- 27. Shaped so that drag through a fluid is minimised
- 31. A roundish structure inside cells that acts as the control centre for the cell.