I would use a graduated jug, as shown in picture
You would use millimeters for the measure of the capacity of a paper cup.
A paper cup typically does not keep water hotter than a plastic cup. Paper is a poor insulator compared to plastic, so heat is more likely to escape from a paper cup, leading to faster cooling of the water inside.
The metric unit commonly used to measure the volume of juice in a small paper cup is milliliters (ml).
why is a cup for measuring food ,different for a cup on the side of a water bottle, i thought that a cup is always 8oz
The boiling point of water is 100 degrees. However, the point at which paper burns is much higher than 100 degrees. When you boil water in a paper cup, all of the heat is transferred to the water, not the cup. When the water starts to boil, the paper stays unburnt. After the water has boiled through, there should be a small black mark on the base of the cup which can be easily removed.
You would use milliliters (mL) to measure the capacity of a paper cup.
That depends on how hot the water is in the cup. Use the thermometer to measure it and see.
A paper cup can be used to boil water by filling it with water and placing it directly over a heat source such as a stove or campfire. The water will boil due to the heat transfer from the flame to the paper cup, causing the water to reach its boiling point. The paper will char and may eventually catch fire, so this method should be done with caution.
the paper cup cannot become appreciably hotter than the water it contains
The capacity of a paper cup is typically measured in milliliters (mL) or fluid ounces (fl oz).
A cup of water is 8 ounces. So .75 cup is 6 ounces of water. Or use a 3/4 cup measure.
The boiling point of water is just 100 deg celcius. But the ignition temperature for paper would be higher than 200 deg celcius. So when paper cup filled with water it cannot attain temperature higher than 100 deg. Hence no burning becomes possible