16/12/2019Light and Sound Energy (STUDY BY TOPICS JUNIOR CLASS) 0Comments by Gate Academy Welcome to your Light and Sound Energy (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. If Sam is playing his guitar and wants one of the strings to create a higher pitch, what should he do?Keep the string the same and use two finger to playReplace the string with a new oneLoosen the stringTighten the string2. Which is a electromagnetic wave?Infrared WavesNone of the aboveGamma WavesAll of AboveLight Waves3. Light travels in straight lines or ____________. Shadows prove this. Light spreads out from a source in all directions, however it can't_______________. Bounce off and raysRays and eatRays and bendBend and raysRays and bounce off4. What kind of waves has the highest frequency?RadioAll of AboveGammaNone of AboveX-Ray5. Mechanical waves need a __________ to travel through.WaveMediumAirAll of AboveNone of Above6. What are some of the properties of sound?None of the abovePitchLoudnessAll of the aboveIntensity7. What does a wave transfer?WaterEnergyAll of AboveNone of AboveSmaller Waves8. What is the temperature of sound at 0 degrees Celsius?All of AboveNone of Above3,000,000 miles per secondSame as light343 miles per second9. A reflected sound wave is called aNone of AboveRefraction of soundEchoStrange VoicesAll of Above10. Convert 35°C into Kelvin.238 K308˚ K308 K238˚ K11. A curved piece of glass or other transparent material that is used to reflect light.PrismAll of AboveMirageLensNone of Above12. Your new question!13. All light is made of waves. A _______ is the distance from the top of one wave to the top of the next wave.WavelengthTop pointDistance lengthHigh pointHigh top14. Which is the definition of light?A type of energy (electromagnetic) that we can detect with our retinaThe movement of air particles hitting your eardrumA force that all objects with mass haveWhat all matter is made up of15. The part of the ear that provide us with our sense of balance is the:Semi-circular canalsOval windowEustachian tubePinna16. Sound is caused byFrequencyVibrationsDecibelsHertz17. Which of the three sounds below has the highest frequency? A B C BACNone of the above18. Select the alternative that lists insulators from the most to the least effective.A windcheater, a cotton T-shirt, a woollen jumper, a parkaA cotton T-shirt, a cotton windcheater, a woollen jumper, a parkaA parka, a woollen jumper, a cotton windcheater, a cotton T-shirtA woollen jumper, a cotton windcheater, a parka, a cotton T-shirt19. Longitudinal waves move the medium in a perpendicular motion to the direction in which the wave is traveling.FalseTrue20. Most of the light that reaches your eyes is__________ light. Reflection occurs when light strikes a surface and _________ off.Old and bouncesRefraction and bouncesNew and bouncesReflected and bouncesBounced and refraction21 out of 20Time is Up!