Earth's Water

ZDROJE VODY NA ZEMI

VODA VŠUDE KOLEM

Podívejte se kolem sebe.

Voda je všude.

Voda prší z oblohy a teče po zemi.

Vsakuje se do země a vytváří zásoby podzemní vody.

VODA JAKO KAPALINA

Většina naší planety je pokryta vodou.

Voda je v mořích, řekách, jezerech a rybnících.

Voda padá z oblohy jako déšť.

Všechna tato voda je v kapalném skupenství.

Voda v kapalném skupenství může téct z jednoho místa na druhé.

Má takový tvar jako předmět, v němž se nachází.

TEPLOTA

Voda se může změnit z kapalného na jiné skupenství.

Voda se mění z jednoho skupenství na druhé v závislosti na teplotě.

Teplota je, jak je něco teplé nebo studené.

VODA V PEVNÉM SKUPENSTVÍ

Představte si déšť pršící z oblohy.

Déšť je voda v kapalném skupenství.

Co se stane, jestliže se příliš ochladí?

Správně - déšť zmrzne!

Když déšť zmrzne, změní se voda z kapalného skupenství na pevné.

Voda v pevném skupenství je led.

Led je tvrdý a má svůj vlastní tvar.

Sníh jsou drobné částečky ledu.

V některých pohořích jsou veliké kusy ledu zvané ledovce.

Rampouchy jsou jiným druhem ledu.

Co se stane s ledem, když se oteplí?

Led roztaje a stane se zase kapalinou.

VODA JAKO PLYN

Co se stane s vodou v kapalném stavu, když je teplota velmi vysoká?

Louže zmizí, když vyjde slunce.

Kam se poděje voda v kapalném stavu?

Energie ze slunce způsobí, že voda změní skupenství.

Voda se změní z kapalného na plynné skupenství.

Voda se vypaří do vzduchu.

Voda v plynném skupenství je vodní pára.

Vodní pára jsou malé částice vody ve vzduchu.

Vodní páru nemůžete vidět, můžete ji pouze cítit.

Vodní pára způsobuje dusno v horkých dnech.

Vodní pára se může změnit, když poklesne teplota.

Vodní pára kondenzuje a mění se ve vodu v kapalném skupenství.

Potom ji zase můžete vidět!

VODA PRO ŽIVOT

Rostliny a zvířata potřebují vodu.

Voda pomáhá všem tvorům na Zemi zůstat naživu.

		EARTH’S WATER
		WATER ALL AROUND
		Look around you.
		Water is everywhere.
		Water falls from the sky and flows overland.
		It goes into the ground and fills bodies of water.
		WATER AS A LIQUID
		Most of our planet is covered with water.
		Water is in oceans, rivers, lakes, and ponds.
		Water falls from clouds as rain.
		All this water is in a liquid state.
		Liquid water can flow from one place to another.
		It takes the shape of whatever it is in.
		TEMPERATURE
		Water can change from a liquid state to other states.
		Water changes from one state to another because of temperature.
		Temperature is how hot or cold something is.
		WATER AS A SOLID
		Think about rain falling from the sky.
		The rain is in a liquid state.
		What happens if the weather gets very cold?
		That’s right—the rain freezes!
		When rain freezes, it changes from a liquid state to a solid state.
		The solid state of water is ice.
		Ice is hard, and it has its own shape.
		Snow is tiny pieces of ice.
		Some mountains have huge pieces of ice, called glaciers.
		Icicles are another form of ice.
		What happens to the ice if the weather gets warm?
		The ice melts and becomes a liquid again!
		WATER AS A GAS
		What happens to liquid water when the temperature is very hot?
		Puddles go away after the sun comes out.
		Where does the liquid water go?
		Energy from the sun causes the water to change state.
		The water changes from a liquid state to a gas state.
		The water evaporates, or goes into the air.
		Water in a gas state is water vapor.
		Water vapor is tiny bits of water in the air.
		You can’t see water vapor, but you can feel it.
		Water vapor makes hot days feel sticky.
		Water vapor can change when the temperature gets lower.
		The water vapor condenses and becomes liquid water.
		Then you can see it again!
		WATER FOR LIFE
		Plants and animals need water.
		Water helps everything on Earth stay alive.

		EARTH’S WATER
		WATER ALL AROUND
		Look around you.
		Water is everywhere.
		Water falls from the sky and flows overland.
		It goes into the ground and fills bodies of water.
		WATER AS A LIQUID
		Most of our planet is covered with water.
		Water is in oceans, rivers, lakes, and ponds.
		Water falls from clouds as rain.
		All this water is in a liquid state.
		Liquid water can flow from one place to another.
		It takes the shape of whatever it is in.
		TEMPERATURE
		Water can change from a liquid state to other states.
		Water changes from one state to another because of temperature.
		Temperature is how hot or cold something is.
		WATER AS A SOLID
		Think about rain falling from the sky.
		The rain is in a liquid state.
		What happens if the weather gets very cold?
		That’s right—the rain freezes!
		When rain freezes, it changes from a liquid state to a solid state.
		The solid state of water is ice.
		Ice is hard, and it has its own shape.
		Snow is tiny pieces of ice.
		Some mountains have huge pieces of ice, called glaciers.
		Icicles are another form of ice.
		What happens to the ice if the weather gets warm?
		The ice melts and becomes a liquid again!
		WATER AS A GAS
		What happens to liquid water when the temperature is very hot?
		Puddles go away after the sun comes out.
		Where does the liquid water go?
		Energy from the sun causes the water to change state.
		The water changes from a liquid state to a gas state.
		The water evaporates, or goes into the air.
		Water in a gas state is water vapor.
		Water vapor is tiny bits of water in the air.
		You can’t see water vapor, but you can feel it.
		Water vapor makes hot days feel sticky.
		Water vapor can change when the temperature gets lower.
		The water vapor condenses and becomes liquid water.
		Then you can see it again!
		WATER FOR LIFE
		Plants and animals need water.
		Water helps everything on Earth stay alive.

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