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Across 5. Waves are caused by these. 8. A form of matter that does not have a definite volume or shape. 9. Materials that can flow to fit their containers. 10. A wave in which the particles of the medium move perpendicularly to the direction of the wave is traveling. 12. Radio waves, microwaves, infrared waves, visible light waves, ultraviolet waves, x-rays and gamma rays are example of this type of waves 14. A pure substnace that cannot be separated into simpler substances by physical or chemical means. 15. The mojority of elements in the periodic table are ____________. 16. Like magnetic poles 18. Burning is an example of ______________ change 23. A clock or a stopwatch is used to measure... 24. A combination of two or more substances that are not chemically combined. 25. The art of the magnet where the magnetic field and the forces are the strongest. 26. A measure of the amount of matter in an object. 28. The basic unit of length in SI 29. The initials of the school you attend now

Down 1. The speed of a wave depends on... 2. A measure of teh size of an object or region in three-dimentional space. 3. Melting ice cubes is an example of a ______________ change. 4. Anything that takes up space and has mass. 6. Tool to measure temperature. 7. The state of matter in which the volume adn shape of a substance are fixed. 11. The rate at which velocity changes over time. 13. Wood is a poor _______________ of electricity. 17. The science that deals mostly with energy and forces. 19. This is an exelent conductor of electricity. 20. Magnetic poles are the opposite 21. Compounds and elements are ______________ substances. 22. unit of liquid volume used in the SI (metric) system. 27. The metric system unit of mass