Download App

Matter in Our Surroundings — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings3 Marks
Question
How does the water kept in an earthen pot (matka) become cold during summer?
✓

Answer

The earthen pot (or matka) has a large number of extremely small pores on its walls. Some of the water kept in the earthen pot continuously keeps seeping through these pores to the outside of the pot. This water evaporates continuously by taking the latent heat of vaporization from the earthen pot and the remaining water. In this way, the earthen pot and remaining water loses heat and gets cooled.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Question Answer (3 Marks)" from Matter in Our Surroundings→Matter in Our Surroundings — all question types→Science STD 9 question papers→Maharashtra Board STD 9 question papers→Maharashtra Board question paper generator→

Similar questions

Describe how the gravitational force between two objects depends on the distance between them.
→
Calculate the number of moles present in a drop of chloroform $\left( CHCl _3\right)$ weighing $0.0239\ g .$
(Atomic masses: $C =12 u ; H =1 u ; Cl =35.5 u$ )
→
An element A forms an oxide $A_2O_5.$
  1. What is the valency of element $A$?
  2. What will be the formula of chloride of $A$?
→
How much is the mass of a man if he has to do $2500$ joules of work in climbing a tree $5\ m$ tall? $\left(8=10 ms^{-2}\right)$
→
What do you understand by the term “transformation of energy”? Explain with an example.
→
A stone is dropped from a height of $20\ m$.
What will be its speed when it hits the ground? $(g = 10m/s^2)$
→
Three different atoms of oxygen are represented as:$^{16}_{\ 8}\text{O},\ ^{17}_{\ 8}\text{O}\text{ and }^{18}_{\ 8}\text{O}$
  1. What do the subscripts (lower figures) and superscripts (upper figures) represent?
  2. What factor is responsible for the change in the superscripts $16, 17$ and $18$, though the element is the same?
  3. What is the usual name for such atoms of an element?
  4. Give the nuclear composition of $​​^{18}_{\ 8}\text{O}$
→
What are (i) metals (ii) non-metals, and (iii) metalloids? Give two examples each of metals, non-metals and metalloids.
→
How will you separate a mixture of iron filings and powdered carbon?
→
What is the range of frequencies associated with (a) infrasound (b) audible sound, and (c) ultrasound?
→