Will a Styrofoam cup with holes punched in it float or sink when placed in water?

Styrofoam is very light weight, so the density is very low – lower than water, so it floats.

What do you think will happen if you fill the cup up with water and poke a hole in the bottom of the cup support your answer?

Poking a thumbtack-size hole in the cup allows air to seep into the cup from the outside. The pressure of the air molecules both inside and outside the cup stays the same, gravity takes over, the card falls, and the water spills. Watch out for the carpet!

Does water leak through Styrofoam?

Although styrofoam has a unique closed-cell design that shouldn’t allow water to seep through, Styrofoam is not entirely waterproof.

Does a styro cup sink or float?

According to Eriksen (2005), the density of polystyrene is 1.05 – 1.07g/mL, which means polystyrene should sink to the bottom since ocean water is less dense (1.027g/mL). However, Styrofoam (also made of polystyrene) has air injected into it, therefore making it less dense and allowing it to float.

Why does Styrofoam float?

Styrofoam floats in water because it is less dense than water. This principle applies to all objects. That is, anything less dense than water will float, while anything more dense will sink….

What happens to the water inside the cup?

Some of this water vapor condensed into tiny drops of liquid water when it condensed on the inside of the top cup. Explain that water vapor leaves the hot water and fills the space above, contacting the inside surface of the top cup. Energy is transferred from the water vapor to the cup, which cools the water vapor.

Do Styrofoam cups leak?

They are not heat stable and could leak hazardous compounds from the container or plastic wrap into the food.” Enough said. Because polystyrene products are so common, many people assume they are safe, and that the Food and Drug Administration (FDA), would not allow an unhealthy product to be sold to the public.

Are Styrofoam cups porous?

Expanded polystyrene is a porous, lightweight foam material. Once food or drink particles get caught in these pores, they lodge there.

Why do people double stack Styrofoam cups?

There are two main reasons why people who drink lean (codeine-premethazine cough syrup mixed with soda pop and hard candy) prefer to double stack their styrofoam cups. 1. The first reason is to avoid this. Styofoam cups are prone to leakage when containing certain liquids, especially syrupy drinks. Lean is one such drink.

Why do stystyofoam Cups leak?

Styofoam cups are prone to leakage when containing certain liquids, especially syrupy drinks. Lean is one such drink. The liquid can seep through the pores of the foam and form syrupy beads on the outside of the cup. This would leave the person holding the cup with a gross and sticky hand. To avoid this, drinkers add a second cup.

Why does water leak out of holes in cups?

Gravity is the reason the water leaks out of the holes when you hold the cup in Step 3. Gravity is pulling the water (and cup) back to Earth, so the water takes the path of least resistance back to Earth – out of the holes. Gravity is also the reason water doesn’t leak out of the holes when you drop the cup in Step 4.

How do you get water out of a plastic cup?

The water will begin to leak out of the holes. Again, position the cup, so your fingers are covering the holes, and fill the cup with water. This time, hold the cup high in the air above a large container. Drop the cup and watch carefully as it falls into the container.