Membuat pelajaran yang lebih baik dan lebih cepat
Indonesia
Beranda Fitur Paket harga  Komunitas
1) Dolphins communicate using special vibration and sound. How is this possible? a) Dolphins have good hearing. b) The energy cannot flow easily through water. c) The energy is transferred from one dolphin to another through sound vibrations. 2) Light travel in ________path. a) Curved b) Straight c) Random 3) Why are sounds not heard in space? a) Space is too cold for sound to travel. b) Space is a vaccum 4) How does sound travel? a) Pulses b) Beams c) Strings d) Waves 5) Sound cannot travel in _____________ a) Air b) Water c) Gas d) Vaccum 6) How sound travels? a) In a straight path to your ear b) Outward in all directions 7) Sound can travel through a) Solid b) Liquid c) Gas d) All of the above 8) Sound travel fastest in ___________ a) Solids b) Liquids c) Gases 9) Sound travel slowest in ___________ a) Solids b) Liquids c) Gases 10) Astronauts cannot talk in space. They use radio, why? a) The air is too thick. b) Gravity is too strong. c) There is no air in space. d) It is very loud in space. 11) Light travels as tiny ___________ of energy. a) Particles b) Matter

L2-> SOUND AND LIGHT (BOOK+MC GRAW HILL)

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