The most difficult glass riddles A list of glass related questions that are most often answered incorrectly Chemistry quiz This photo has been taken at seaglass beach in Hawai'i. How is the seaglass formed?From garbage. Sea glass beaches are created from years of dumping garbage into an area of coastline. Sea glass begins as normal shards of broken glass that are then persistently tumbled and ground until the sharp edges are rounded. hard 48% from lava droplets that fall to the sea during land volcano explosionsfrom lava droplets that fall to the sea during land volcano explosions24%in deepwater volcano explosionsin deepwater volcano explosions20%during lightning strikesduring lightning strikes7%from garbagefrom garbage48%Created by: life-o-holic. Statistics based on 15016 answers in 2 languages »Hawaii riddles » What are these vintage glasses for?Champagne. Legend has it the shape of the glass was modelled on the breast of Marie Antoinette. The broad surface area allows champagne to lose its carbonation more quickly, making it not suitable for the current style of very dry champagnes. It therefore fell out of fashion except for traditional occasions such as weddings, where it is often stacked in layers to build a champagne tower.hard 49% winewine31%beerbeer6%champagnechampagne49%whiskywhisky12%Created by: globalquiz.org. Statistics based on 8548 answers in 4 languages »wine riddles » What kind of material is this cooktop made of?Glass-ceramic materials share many properties with both non-crystalline glass and crystalline ceramics. The negative thermal expansion of the crystalline ceramic phase can be balanced with the positive expansion of the glassy phase. At a certain point (~70% crystalline) the glass-ceramic has a net expansion near zero and can sustain repeated and quick temperature changes up to 1000 °C.average 62% glassglass8%ceramicceramic26%metalmetal2%glass-ceramicglass-ceramic62%Created by: Bob Stanley. Statistics based on 23576 answers in 2 languages »materials riddles » What was added to this glass to make it blue?Cobalt. Powdered cobalt glass, called smalt, has been historically important as a pigment in painting and pottery. It is colored to a deep powder blue hue using cobalt ions derived from cobalt oxide. Cobalt aluminate can be used in a similar way, and is now more common, often known as "cobalt blue".easy 73% inkink16%leadlead4%cobaltcobalt73%magnesiummagnesium5%Created by: globalquiz.org. Statistics based on 31030 answers in 2 languages »colors riddles » What are these glasses for?Champagne. The narrow bowl of the champagne flute is designed to retain champagne's signature carbonation, by reducing the surface area at the opening of the bowl. very easy 81% winewine7%cocktailscocktails1%champagnechampagne81%absintheabsinthe8%Created by: globalquiz.org. Statistics based on 13494 answers in 2 languages »drinks riddles » Play chemistry quiz and see all the questions.