1) sound cannot travel through a) oceans b) liquids c) caves d) houses e) space f) forests 2) sound travels better through a) gasses b) liquids 3) sound travels at different materials a) true b) false 4) sound waves travel at the same speed a) true b) false 5) sound waves can travel through doors and walls a) false b) true

Rebríček

Vizuálny štýl

Možnosti

Prepnúť šablónu

Obnoviť automaticky uložené: ?