Electromagnetic radiation and waves

1. the amount of radiated electromagnetic energy emitted by a light-emitting or luminous object
5. a wave for which the disturbance is parallel to the direction of propagation
6. a wave of short duration
7. a measure of how hot or how cold something is
9. the movement of particles due to an energy wave passing through them
11. the product of the wavelength of the wave multiplied by its frequency
14. the distance between successive corresponding parts of a periodic wave
15. the transfer of energy through a medium without any net movement of matter

2. a wave for which the disturbance is at right angles to the direction of propagation
3. a region of increased pressure in a medium during the transmission of a wave
4. refers to luminous objects that produce light because they are hot; the higher the temperature, the brighter the light, and the colour also changes
8. an object that absorbs all radiation that falls on it
10. a region of reduced pressure in a medium during the transmission of a sound wave
12. a measure of how many times per second an event happens, such as the number of times a wave repeats itself every second
13. the amount of time, measured in seconds, that one cycle or event takes, such as the time taken for an object moving in a circular path and at a constant speed to complete one revolution
16. a periodic disturbance that is the maximum variation from zero