PPT: A Journey through States of Water | Science for Class 6 PDF Download

 Page 1


A Journey 
through States 
of Water
 Water exists in three states: solid, liquid, and gas. This chapter explores how 
water changes between these states through evaporation, condensation, and 
freezing. We'll investigate the properties of each state and the water cycle.
Page 2


A Journey 
through States 
of Water
 Water exists in three states: solid, liquid, and gas. This chapter explores how 
water changes between these states through evaporation, condensation, and 
freezing. We'll investigate the properties of each state and the water cycle.
The Three States of Water
Solid (Ice)
Ice has a fixed shape. It does not flow 
or spread.
Liquid (Water)
Water flows and takes the shape of its 
container. It spreads but keeps a 
constant volume.
Gas (Water V apor)
Water vapor spreads to fill available 
space. It has no fixed shape or volume.
Page 3


A Journey 
through States 
of Water
 Water exists in three states: solid, liquid, and gas. This chapter explores how 
water changes between these states through evaporation, condensation, and 
freezing. We'll investigate the properties of each state and the water cycle.
The Three States of Water
Solid (Ice)
Ice has a fixed shape. It does not flow 
or spread.
Liquid (Water)
Water flows and takes the shape of its 
container. It spreads but keeps a 
constant volume.
Gas (Water V apor)
Water vapor spreads to fill available 
space. It has no fixed shape or volume.
Changing States: 
Melting and Freezing
1
Solid Ice
Ice starts as a solid with a fixed shape.
2
Melting
Heat causes ice to melt into liquid water.
3
Liquid Water
Water takes the shape of its container.
4
Freezing
Cooling causes water to freeze back into ice.
Page 4


A Journey 
through States 
of Water
 Water exists in three states: solid, liquid, and gas. This chapter explores how 
water changes between these states through evaporation, condensation, and 
freezing. We'll investigate the properties of each state and the water cycle.
The Three States of Water
Solid (Ice)
Ice has a fixed shape. It does not flow 
or spread.
Liquid (Water)
Water flows and takes the shape of its 
container. It spreads but keeps a 
constant volume.
Gas (Water V apor)
Water vapor spreads to fill available 
space. It has no fixed shape or volume.
Changing States: 
Melting and Freezing
1
Solid Ice
Ice starts as a solid with a fixed shape.
2
Melting
Heat causes ice to melt into liquid water.
3
Liquid Water
Water takes the shape of its container.
4
Freezing
Cooling causes water to freeze back into ice.
Evaporation: Water to 
V apor
1
Definition
Evaporation is the process of liquid water changing into water vapor.
2
Energy
Heat energy causes water molecules to break free from the liquid 
surface.
3
Examples
Drying clothes, puddles disappearing, and sweat evaporating from skin.
Page 5


A Journey 
through States 
of Water
 Water exists in three states: solid, liquid, and gas. This chapter explores how 
water changes between these states through evaporation, condensation, and 
freezing. We'll investigate the properties of each state and the water cycle.
The Three States of Water
Solid (Ice)
Ice has a fixed shape. It does not flow 
or spread.
Liquid (Water)
Water flows and takes the shape of its 
container. It spreads but keeps a 
constant volume.
Gas (Water V apor)
Water vapor spreads to fill available 
space. It has no fixed shape or volume.
Changing States: 
Melting and Freezing
1
Solid Ice
Ice starts as a solid with a fixed shape.
2
Melting
Heat causes ice to melt into liquid water.
3
Liquid Water
Water takes the shape of its container.
4
Freezing
Cooling causes water to freeze back into ice.
Evaporation: Water to 
V apor
1
Definition
Evaporation is the process of liquid water changing into water vapor.
2
Energy
Heat energy causes water molecules to break free from the liquid 
surface.
3
Examples
Drying clothes, puddles disappearing, and sweat evaporating from skin.
Factors Affecting 
Evaporation Rate
T emperature
Higher temperatures increase evaporation rate.
Surface Area
Larger exposed surface area leads to faster evaporation.
Air Movement
Wind or moving air speeds up evaporation.
Humidity
Lower humidity in the air allows faster evaporation.