IGCSE Physics

3. maximum displacement of wave from equilibrium position
6. region in a longitudinal wave where the particles are apart from each other
8. force per unit area
11. mass x velocity
12. mass per unit volume
13. wave with direction of vibration perpendicular to the direction of travel of the wave
15. wave with direction of vibration of particles of the transmitting medium parallel to the direction of travel of the wave
16. an image which can be formed on a screen
18. flow of thermal energy through a fluid from places of higher temperature to lower temperature by movement of the fluid
19. bending of light when changing medium

1. highest point of a wave
2. distance between successive crests of a wave
4. an image which cannot be formed on a real screen
5. flow of thermal energy through matter from places of higher temperature to places of lower temperature without movement of the matter as a whole
7. number of complete waves generated per second
9. region in a longitudinal wave where the particles are closest together
10. angle of incidence which produces an angle of refraction of 90°
14. when light bounces back off a surface
17. lowest point of a wave
19. transfer of thermal energy from one place to another by electromagnetic waves