Question

SFSU ID# NAME: Part 1: Multiple-Choice (48 points possible) 1 When heat is transferred throughout a room by moving chenks of air, this is an example of o Conduction O Convection O Radiation O None of the above 2 Heat is another word for O Potential energy O Temperature O Internal energy O Energy that flows from hot objects to cold objects 3. When heat is transferred from a hot cup of coffee to a metal spoon, this is an example of: O Conduction O Convection O Radiation O None of the above What kind of wave is a sound wave? O Transverse wave O Infrared wave O Longitudinal wave 4. O None of the above, sound is not a wave You hear the siren on an ambulance off in the distance. If the pitch is higher than it would be normally, what can you conclude about the motion of the ambulance? O The ambulance is moving towards you 5. O The ambulance is moving away from you O The ambulance is not moving at all relative to you. O We cannot determine if the ambulance is moving without also knowing the wavelength of the sound waves. 6. Two sound waves are travelling with the same wave speed through air. If the first wave has a frequency that is 1/2 that of the second wave, how do their wavelengths compare? O The first wave has a wavelength four times as long as the second wave. O The first wave has a wavelength twice as long as the second wave. O The two waves have the same wavelength. O The first wave has a wavelength one-half as long as the second wave. O The first wave has a wavelength one-fourth as long as the second wave. 4

Answer 1

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DU U die A2 Ans.(2) Heat is another word of the Energy that flows from hot object to cold object option CD) is consect Ans.(3) option CAS is correct. conduction happens transfer of he energy Particle to particle so this is what we Call Conduction Ana (4) (di = 2x de option (e) is connect option (b) is coneet (Ans. ) 6 oo speed is same V = V = V 1 = 1 1 2 10 = 1 V2 Ist ware has warelength that is twice of as long as and were