Water "wets" plastic more than glass, giving a lower reading
Density = Mass/Volume. For water: 1/(1*1*1) = 1/1 = 1 g/cm3 For plastic: 4/(2*3*1) = 4/6 =2/3 g/cm3. So the water has the greater density.
If you refer to a copper coin, simply place it in a measuring glass of water and work out the difference between the start and final volumes; that is the volume of the coin.
Think of a plastic bag filled with water. It makes more sense to describe the amount of water within the bag by it's volume vice the bag's dimensions.
The volumes of small irregular solids are usually easily measured by measuring the volume of fluid displaced when they are immersed in a liquid. For example: You would have to put the object in a measuring glass with water in it. (~1/3 filled) Put the object in it and then get the number from the measuring glass (beaker etc. mostly beaker) and that is how you measure a irregular solid!
Measure the length of the edge of the cube and multiply this by itself 3 times.Fill a measuring jug with enough water to cover the cube. Measure the level of water. Immerse the cube in the water in jug and measure the level of the water. The difference in level is the volume of the cube.
Glass is a better insulator than plastic. Plastic is used on wire for insulation purposes because of its flexibility, where as glass is not. Glass is used as insulators for holding wires to cross arms on power poles as plastic would not stand up to the weather year after year.
The best unit of measure to use when measuring the amount of water in a drinking glass is ounces. A liquid measuring cup can be used to measure the ounces of water.
Glass would be healthier
a beaker or a measuring cup are a few of the simple ways to collect rain water. -Emma(:
salt corrodes glass
I would say glass. Glass is nonporous and easily cleaned and disinfected. Plastic is soft and the molecules making up the plastic bottle may leach into the water.
2 ml
a glass that holds one pint
Some transparent objects are water, air, and clear glass.
Throw them at the ground. The glass will shatter. Plastic will not. dont try this at home... It wont hold water.
Metal - very good conductor of heat. Not a good insulator at all (Don't wrap cans in aluminum foil.) Glass - A little better resistor of heat energy transfer but still not great. Plastic - Depending on the exact material, plastic is probably your best bet. Especially if it's a foam of some sort; the air bubbles in the foam create barriers that heat energy has to cross to be able to escape.
Assuming they are the same or similar shape and volume, water in glass would freeze first, then plastic then foam. Foam allows transfer of heat out of water more slowly than plastic and the glass probably has the highest rate of heat radiation of the three.