Water droplets appear on the outer surface of a glass tumbler because the cold glass cools the air around it. This cooling causes moisture in the air to condense into droplets on the glass.
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Dew drops are more visible in the morning because overnight cooling causes water vapor to condense on cool surfaces like plants. As temperatures drop, the air’s capacity to hold moisture decreases, forming dew.
The mass of cold water on the digital weighing balance will remain the same. Mass is conserved unless water evaporates or external substances are added. Temperature changes alone do not affect the mass of water.
Students can request senior classmates to demonstrate stomata under a microscope to observe how plants respire. Chapter 10 Living Creatures: Exploring their Characteristics NCERT Science Textbook Curiosity Science Session 2024-2025.
You can observe the movement of their abdomen while they are resting to see their breathing process. Class 6 Science NCERT Chapter 10 Chapter 10 Living Creatures: Exploring their Characteristics