P1 Waves & Radiation Evidence for the Big Bang (e.g. universe began from a very small initial point) 1. _________________________ 2._________________________ The image produced in a plane mirror is 1. ______________________ 2. ______________________ 3. ______________________ Refraction occurs when a wave is ________down as it travels into a more dense medium (________). The wave now bends _____ the normal. As it leaves the dense medium (______) it ______ up & bends ______from the normal. away ; water into air; air into water speeds ;slowed; towards Add the following labels to the diagrams Wavelength, Amplitude,Rarefaction Compression, Oscillations, Direction of energy transfer The observed increased in wavelength of light from distant _______ is called _______. The _______ away the galaxy the _______ it is moving & the _______ the increase in wavelength (the bigger the red shift). Galaxies; bigger; faster; RED SHIFT; further In a transverse waves the ________are ________ to the direction of energy transfer. In a longitudinal wave the _______ are ________ to the direction of energy transfer. This can be demonstrated using a _______ spring. Slinky parallel oscillations perpendicular oscillations List the order of the electromagnetic spectrum in the order high frequency to low : _______________ Draw a diagram to show law of reflection include these labels. Normal incident & reflected angles, incident & reflected ray. What does a wave transmit? _____________________ Speed=Wavelength X Frequency m/s = m X /s Calculate the speed of a wave when the wavelength is 3m & 10 waves arrive every 2 seconds. ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ ________________

Label the diagrams below using the following labels; Liquid; gas; solid; boiling; condensation; freezing; sublimation; melting; fast moving; vibrating ; moving; fixed shape fluid; fluid; Write the correct electromagnetic wave for each use, Visible light, radio waves, infrared, microwaves. Remote controls Night cameras P1 waves, radiation & energy ________ Mobile phones Satellite TV TV Radio Photography Draw a diagram to show we can hear the radio but can’t see the TV when in a cottage on a hill side. ________ is the process when waves bend around corners or through ________ (gaps). When the gap is almost the ______size as the wavelength, the greater the diffraction effects. When waves meet an ______ (mountain, see right) the ______ the wavelength the more diffraction occurs. doorways; Diffraction; same; longer; obstacle. The factor which effect evaporation are; 1. ______________________ 2. ______________________ 3. ______________________ The fuels used in a nuclear power stations are; U_____________________ & P____________________ Nuclear fraction/fission creates potential/energy in a nuclear power station. Some say nuclear is a clean resource as it doesn’t make N 2 /CO 2 however the products are radioactive/smelly & could cause environmental problems.