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This week we are working on a science 

unit that has to do with Earth's 

systems, structures, and processes.  

Today, we learned about how light 

travels.   We learned that light travels 

from the sun to the earth.   Some of 

this light is reflected back into space 

and some of the light is absorbed by 

the land, water, and air.   To conclude, 

we learned that light is always 

traveling.

We also learned all about wind.   We learned 

how to determine the direction of the wind and 

the speed of the wind.   You can determine the 

direction of the wind by looking at a wind 

socket or vane.   We described the direction of 

the wind by using cardinal directions, which 

means North, South, East, or West.   We can 

determine the speed of the wind by using an 

anemometer.   Now we know how to determine 

the direction and speed of wind.

Another thing that we learned about 

was weather patterns.   We learned 

that weather patterns are influenced by 

the time of day and the time of year.  

During the day, it is normally cooler 

in the mornings and warmer in the 

afternoons.   The weather changes 

throughout each season.   There are four 

seasons; summer, fall, winter, and 

spring.   During summer it is hot, in 

fall it starts cooling down, winter it 

is very cold, and spring is when it 

starts warming back up.   In 

conclusion, we learned that the 

weather changes depending on the time 

of day and the time of the year.

The last topic that we learned about in our Earth 

unit in science was about the different instruments 

that weathermen use to predict, collect, and 

analyze data.   They use both electronic and manuel 

instruments, sensors, and computers.   They can 

use these instruments to produce a running record 

of weather changes that occur over time.   By using 

this data that they collect, they can then begin to 

predict weather trends.   Now we know how 

weathermen can collect, analyze, and predict 

weather by using different instruments.

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