Chapter 8 of Class 6 Science, A Journey through States of Water, explains the basic features that make an organism live. Through simple questions and answers, students can easily understand this chapter.
Answer:
Water exists in three states:
Water changes its state when temperature changes.
Answer:
The temperature at which a solid changes into a liquid is called its melting point.
The melting point of ice (water) is 0°C.
Answer:
The temperature at which a liquid changes into gas is called its boiling point.
The boiling point of water is 100°C.
Answer:
The process by which water slowly changes into water vapour at room temperature is called evaporation.
Example: Drying of wet clothes.
Answer:
The process by which water vapour changes into liquid water on cooling is called condensation.
Example: Water droplets on the outside of a cold glass.
Answer:
The process by which water changes into ice on cooling is called freezing.
Water freezes at 0°C.
Answer:
The process in which a solid directly changes into gas without becoming liquid is called sublimation.
Example: Camphor and naphthalene balls.
Answer:
Ice floats on water because it is less dense than water.
Answer:
Wet clothes dry faster because:
Answer:
The continuous process of evaporation, condensation, and rainfall is called the water cycle.
Steps:
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