Question
What about a sponge? It is a solid yet we are able to compress it. Why?
✓
Answer
A sponge is considered a solid, but it can be compressed because of its porous structure.
It is made of a solid material that has a large number of tiny holes or spaces, which are filled with air. When you press a sponge, you are not compressing the solid material itself, but rather squeezing the air out of these pores. The solid framework of the sponge is also elastic, allowing it to return to its original shape once the pressure is released and the air rushes back in.
It is made of a solid material that has a large number of tiny holes or spaces, which are filled with air. When you press a sponge, you are not compressing the solid material itself, but rather squeezing the air out of these pores. The solid framework of the sponge is also elastic, allowing it to return to its original shape once the pressure is released and the air rushes back in.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What information do you get from the Fig. about the atomic number, mass number and valency of atoms X, Y and Z? Give your answer in a tabular form.
Name the two organelles in a plant cell that contain their own genetic material and ribosomes.
What is gametophyte?
The velocity of a body of mass 10kg increases from 4m/s to 8m/s when a force acts on it for 2s.
What is the gain in momentum per second?
What is the gain in momentum per second?
When you press the head of a pin, it pierces into the board and not your thumb. Why?
How will you show that the slope of the displacement-time graph gives the velocity of the body?
What important information is furnished about the nucleus of an atom by the alpha particle scattering experiment of Rutherford?
20g of sodium chloride is dissolved in 100mL of water. How will you test whether the given solution is saturated or unsaturated at the given temperature?
Give a short account of biofertilizers.
The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?