Where does water come from? Flashcards
Does the journey of water ever end?
No, water is always moving on an endless journey.
The water cycle produces all the ___ and ___ on earth.
rain and snow
The water cycle is driven by _____ energy.
the sun’s energy
What is the process of evaporation?
When the sun warms up the water in the oceans, seas, rivers, lakes and wet surfaces of the land, it causes evaporation and the water turns into an invisible gas called water vapour.
The sun’s warmth and the wind blowing over the oceans and seas turn large amount of ___into_____ all the time.
turn large amount of water into water vapour
The water vapour _____ into the air.
rises up
High in the sky, where the air is cold, what happens to the water vapour?
The water vapour cools and condenses.
What is condensation?
Condensation is caused when the water vapour rises high up into the cool air, and the gas (vapour) turns into tiny droplets of water that are very light and float in the air and form clouds.
What is precipitation?
Precipitation is caused as the water droplets get colder in the sky, such as when they rise over a mountain. The droplets join together to form bigger droplets and later fall to the ground as rain.
How are snowflakes formed?
When the air is very cold, the tiny droplets of water in the clouds may turn into ice crystals, which join together and fall to the ground as snowflakes.
Where does the rain and snow that fall on the land go?
the water in the rain and snow that falls on the land eventually flows back into the rivers, which flow downhill to the ocean or the sea.
In what forms can gas turn into when it precipitates?
In forms such as rain, hail, steep and snow.
___% of the world’s water is seawater.
97%
3% of the world’s water is ___.
freshwater.
What are the 4 locations that freshwater is stored on the earth?
Freshwater is stored in 1. the air, 2. in rivers and lakes, 3. in ground and soil and 4. in ice and snow.
