Yes. Being made of plastic, a straw will float in water. The mass of the straw is typically designed so that it starts floating only after 3 quarters is inside the water and not before.
A glass of water would sink considering how heavy it is. but if it is plastic it will just float on the top like a ice berg.
If the glass (real glass) is empty and placed in the water upright, it...
Glass can float. Next time you do the washing up notice how a glass plate or a glass floats. That's because glass can float on water
.. other writer..
glass cannot float. it is denser than water...