Have you ever wondered why it rains??
Step 1: Evaporation
The water cycle starts with evaporation. It is the process where water at the surface turns into water vapors.
Step 2: Condensation
As water vaporizes into into water vapor it rises up in the atmosphere. At high altitudes the water turns into small water droplets.
Step 3: Sublimation
It is the process where ice directly converts into water vapors without converting into liquid water. This is a slower process than evaporation.
Step 4: Precipitation
The clouds then pour down as precipitation due to wind or temperature change.
Step 5: Transpiration
As water precipitates, some of it is absorbed by the soil.
Step 6: Runoff
As water pours down, it leads to runoff. Runoff is the process where water runs of to the surface of the earth.
Step 7: Infiltration
Some of the water that precipitates does not runoff into the rivers and is absorbed by the plants or gets evaporated. It moves deep into the soil. This is called infiltration.
Analyzing and Interpreting Data
Analyzing data in K–2 builds on prior experiences and progresses to
collecting, recording, and sharing observations.
Use observations (firsthand or from media) to describe patterns in
the natural world in order to answer scientific questions. (K-ESS2-1
ESS2.D: Weather and Climate
Weather is the combination of sunlight, wind, snow or
rain, and temperature in a particular region at a
particular time. People measure these conditions to
describe and record the weather and to notice patterns
over time. (K-ESS2-1)
