Download App

Matter in Our Surroundings — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings3 Marks
Question
On a hot sunny day, why do we feel pleasant sitting under a tree?
✓

Answer

Tree has lot of leaves which constantly show transpiration. Transpiration is loss of water through small tiny pores of leaves called stomata. When this water comes on the surface of leaf the water evaporates thereby causing cooling effect. Therefore we feel pleasant sitting under the tree on a hot sunny day.

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 "Que-Ans (Each of 3 Mark )" from Matter in Our Surroundings→Matter in Our Surroundings — all question types→Science STD 9 question papers→Rajasthan Board STD 9 question papers→Rajasthan Board question paper generator→

Similar questions

Non metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
  1. Name a lustrous non-metal.
  2. Name a non-metal which exists as a liquid at room temperature.
  3. The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.
  4. Name a non-metal which is known to form the largest number of compounds.
  5. Name a non-metal other than carbon which shows allotropy.
  6. Name a non-metal which is required for combustion.
→
Which method is better for recovering sugar from sugar solution: evaporation or crystallization? Give reason for your answer.
→
A constant force applied on an object of mass $2\ kg$ for $10s,$ increases its velocity from $5\ ms$ to $10\ ms^{-7}.$ Find the magnitude of applied force. If the same force is applied for $15s,$ what will be the final velocity of the object?
→
Why burns caused by the steam are much more severe than boiling water?
→
Describe secretion in cell.
→
Calculate the density of an object of volume $3m^3$ and mass $9\ kg.$ State wheater this object will float or sink in water. Give reason for your answer.
→
Why is it advisable to use pressure cooker at higher altitudes for cooking food?
→
Write the chemical formulae of Nitrates $(NO_3^–)$ of $Na^+, K^+, Al^{3+}, Mg^{2+}, Ca^{2+}, Zn^{2+}.$
→
Which of the two, balanced forces or unbalanced forces, can change the shape of an object? Give an example to illustrate your answer.
→
What are the various types of cells of connective tissue?
→