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Learning Task 2. Prepare the materials listed below. If not available, you may use other materials at home to
perform the activity. You may ask the help of your parents/guardians or any adult members of the family if
needed.
Title: Showing Wind Erosion
Materials:
1 cup of fine sand
hard cardboard
paper plate
Procedures:
1. Pour one cup of fine sand on a paper plate.
2. Slowly fan the sand on the paper plate using the hard cardboard. What do you observe?
3. Next, fan the sand bit faster. What happens?
4. Try different speed of fanning. Draw what shape forms each time you change the speed.
Questions:
1. As you observed, how does the speed of fanning affect the shape of the sand formed?​

Sagot :

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Question:1.As you observed, how does the speed of fanning affect the shape of the sand formed?

Answer:

Fanning is done by the wind in sandy dunes. ... The wind hurries up when it meets the slope of a dune, permitting it to carry even more quantity of sand. It is observed that the size and spacing of dunes increases as the velocity does. Also, the greater the velocity, the bigger the grains it can carry.

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