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. Transverse waves move the medium in a perpendicular motion to the direction in which the wave is traveling. True False2. Select the alternative that lists insulators from the most to the least effective. A woollen jumper, a cotton windcheater, a parka, a cotton T-shirt A windcheater, a cotton T-shirt, a woollen jumper, a parka A cotton T-shirt, a cotton windcheater, a woollen jumper, a parka A parka, a woollen jumper, a cotton windcheater, a cotton T-shirt3. What kind of waves has the highest frequency? None of Above Gamma All of Above Radio X-Ray4. What is the material that a wave travels through called? All of Above Water Medium None of Above Air5. Sound is a disturbance that travels through a medium as a transverse wave. True False6. The sound of a flute is produced because: Air vibrates as it enters the mouthpiece. The air around each hole in the flute vibrates. Different-sized columns of air inside the flute vibrate. Your fingers vibrate as they cover specific holes.7. If Sam is playing his guitar and wants one of the strings to create a higher pitch, what should he do? Tighten the string Loosen the string Replace the string with a new one Keep the string the same and use two finger to play8. Most of the light that reaches your eyes is__________ light. Reflection occurs when light strikes a surface and _________ off. Old and bounces Reflected and bounces New and bounces Refraction and bounces Bounced and refraction9. A reflected sound wave is called a Strange Voices Echo Refraction of sound All of Above None of Above10. Humans can see all wavelengths of light White Black Blue Red11. Humans can see all wavelengths of light True False12. Longitudinal waves move the medium in a perpendicular motion to the direction in which the wave is traveling. False True13. The part of the ear that provide us with our sense of balance is the: Semi-circular canals Pinna Oval window Eustachian tube14. Primary colors combine to make any color. False True15. Light is a form of energy. Light travels from the Sun to the Earth________ and________ are other examples of light on Earth. Often sources of light give off heat. Fire and lightbulbs Lightbulbs and televisions Fire and televisions Fire and computers Computers anlight bulbs16. A curved piece of glass or other transparent material that is used to reflect light. None of Above Mirage All of Above Lens Prism17. Which one will REFLECT ALL the light that hits it? A mirror A red dress Stars The sun18. All light is made of waves. A _______ is the distance from the top of one wave to the top of the next wave. Distance length High point High top Top point Wavelength19. Light travels at different speeds in different materials. The thicker a material, the _______________ light travels through it. As light travels more slowly it bends more. Faster More Slower Less20. Most materials _______ the light falling on them but some materials allow light to pass through them. Refraction happens when light passes through glass, water, light plastic, and other_______ objects. Opaque and reflect Reflect and opaque Reflect and transparent Reflect and translucent Translucent and reflect21 out of 20Time is Up!