Waves and the universe 0.0 / 5 ? PhysicsWavesEarth in spaceGCSEAll boards Created by: XxEternalKissxXCreated on: 08-03-16 16:48 How do you work out wave speed? frequency multiplied by wavelength 1 of 23 How do you work out wavelength? Speed X frequency 2 of 23 what is diffraction? The spreading of waves when they pass through a gap or past an object 3 of 23 Complete this: The narrower the gap, the ____ more the waves spread out 4 of 23 Complete this: The wider the gap, the ____ less the waves spread out 5 of 23 A musical note with a high frequency sounds ______ than one with a low frequency higher 6 of 23 A noise of a small amplitude sounds _____ than one with a large amplitude quieter 7 of 23 Electromagnetic waves move ____ from one place to another particles 8 of 23 Infra red can: damage skin cells and cause burns 9 of 23 Visible light can: Cause blindness 10 of 23 Ultra Violet can: Harm the eyes and skin 11 of 23 Gamma rays can: Cause cancer 12 of 23 Micro-waves can: Cause internal tissue heating 13 of 23 Which waveband carries more information? HF 14 of 23 Which waveband has the shorter range? UHF 15 of 23 The atmosphere ____ radio waves that carry signals from local radio stations. This is why the signals cannot be received far away from the transmitter absorbs 16 of 23 What is the blue shift? it happens when an object moves closer to you 17 of 23 What is the red shift? It happens when an object moves away from you 18 of 23 What direction is the blue shift? Left 19 of 23 What direction is the red shift? Right 20 of 23 What is the big bang theory? The theory that the universe is expanding after an explosion form an initial point 21 of 23 What is the steady state theory? Theory that matter leaked into the universe 22 of 23 How does the red shitf support the theory of the Big Bang? Shows us the universe is moving away (so it's expanding) 23 of 23
Comments
No comments have yet been made