hey it's Kaeleigh and this lesson is on the water cycle let's see what the big deal
is about water on earth rain is a very important part of Earth's weather rain
helps move water through the water cycle connecting the ocean land and atmosphere
let's see what it's all about it is important for scientists to know
where it rains and snows and how the rivers and streams are flowing and where
water is stored on earth by taking measurements of water depths and how
much rain and snow falls scientists are able to determine changes in Earth's
climate in simple words the water cycle describes how water evaporates from
Earth's surface into the sky then it cools and condenses into rain or snow
clouds then it falls back to the earth as precipitation rain or snow the water
that falls to earth is then stored in lakes in soil and on porous rocks the
water eventually makes its way back to the ocean and then is evaporated again
let's start with a deeper look into evaporation evaporation happens when
liquid water heats up and becomes water vapor but this idea of water turning
into vapor rising into the atmosphere doesn't only happen from bodies of water
like oceans and lakes plants can suck water up into them from
the soil this movement of water from the soil to the plant is called plant uptake
after plant uptake water can also be turned into water vapor and is lifted to
the atmosphere from plants this is called transpiration sometimes when it
snows the air temperature is so warm the snow turns into water vapor and is
brought back up into the atmosphere this is called sublimation
in this picture these arrows are present evaporation from water
transpiration from plants and sublimation from snow when the water
vapor cools to become water droplets it is called condensation these water
droplets are stored in clouds as rain or snow when water moves through the
atmosphere but doesn't fall to the earth it's called vapor transports these
arrows represent water condensating and this air represents vapor transport
moving from one cloud to the next the next stage in the water cycle is
precipitation precipitation can be rain snow or hail falling from clouds
sometimes when it's very cold water vapor can turn directly into snow or ice
and fall to the earth that process is called deposition in this picture this
arrow represents snow precipitation this arrow represents rain precipitation and
this represents deposition when a cloud of tiny water droplets is very close to
the ground it is called fog sometimes due conform do is when water vapor has
condensed into water droplets on an object the last stage of the water cycle
is collection or storage of water on Earth's surface this happens by streams
or rivers which bring the water that fell to the earth to large storage areas
like oceans and lakes water can also drain over the surface of the earth this
is called runoff this is an example of a stream and this is an example of runoff
when water soaks into the soil it's called infiltration and as water
moves through the rocks and the soil it's called perkily
the water is then stored beneath the earth here and it's called groundwater
as the groundwater moves towards larger storage areas it's called groundwater
flow once the water is collected and in storage the Sun comes out and is a
source of heat and energy as the temperatures heat up the water cycle can
start all over again here is a labeled graphic of the water cycle for you to
study feel free to pause the video and sketch a copy into your science notebook
keep practicing what you have learned about the water cycle by playing our
games and taking the online quizzes and remember to always be clever