下列关于声音的产生和传播的说法中正确的是 A.声音都是靠空气来传播的b.只要物体振动人就能听到声音c.回声是声音被障碍物反射而形成的d Template




You need a modern browser try chrome, to view this.

Background image: Hide Show

View Larger Image Image Credit: 1010jiajiao.com






Try and sketch some of theseCoven, Hutch, Pond, Skydiver, Elf, Tea party, Shepherd, Sword swallower, Snowplow, Beets, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

anonymous
anonymous
sketch #4945


anonymous
anonymous
sketch #5141


sketchmaster
sketch #2619 Underwater by sketchmaster


anonymous
anonymous
sketch #4869 Madara by Jean-Benoit Renaud


anonymous
anonymous
sketch #270


anonymous
anonymous
sketch #5236 Edward Scissorhands by Ronin Ronin


anonymous
anonymous
sketch #3208 ELETR by Raimundo Santos


anonymous
anonymous
sketch #3586


anonymous
anonymous
sketch #1500


Donara Smbatyan
sketch #1448 donara


anonymous
anonymous
sketch #2220 bahbah sexy sheep


anonymous
anonymous
sketch #5079 SketchToy Pencil by Sarah Prieto


Donara Smbatyan
sketch #1452 donara


anonymous
anonymous
sketch #1118 easy zombie


anonymous
anonymous
sketch #894 hmmm


anonymous
anonymous
sketch #474 waa


anonymous
anonymous
sketch #5435


John Davis
sketch #2784


anonymous
anonymous
sketch #2552


anonymous
anonymous
sketch #4835 L from Death Note by Adidtzu Ady


anonymous
anonymous
sketch #5116 Bleach by Vrushali Rane


anonymous
anonymous
sketch #3232


anonymous
anonymous
sketch #4976


anonymous
anonymous
sketch #937


anonymous
anonymous
sketch #4702


anonymous
anonymous
sketch #5324 Angelina Jolie - Maleficent by Lucas Fajardo


anonymous
anonymous
sketch #2856 Merry Christmas from Melany Campano Laos Komlós László


Rachel Roe
sketch #2645 Flowers in window

tomski下列关于声音的产生和传播的说法中正确的是 a.声音都是靠空气来传播的b.只要物体振动人就能听到声音c.回声是声音被障碍物反射而形成的d coloring