Wind Simulation and Sand Dynamics

The video tutorial demonstrates how to create a model of sand dunes using sand, rocks, and colored sand. It explains the formation of sand dunes and simulates wind effects using a straw to show how sand particles move and change the landscape. Safety measures, such as wearing goggles, are emphasized. The tutorial concludes by observing the changes in the sand landscape, highlighting erosion and deposition processes.

What is the primary purpose of adding more sand on top of a flat layer in the demonstration?

• To make a sandcastle

• To form a sand dune

• To simulate a desert landscape

• To create a mountain

Why are small rocks added to the sand landscape in the demonstration?

• To demonstrate their effect on sand movement

• To prevent the sand from blowing away

• To increase the height of the sand dune

• To make the landscape more colorful

What is the purpose of using colored sand in the demonstration?

• To make the landscape look more realistic

• To prevent the sand from moving

• To help visualize changes in the landscape

• To add weight to the sand dune

Why is it important to wear goggles during the wind simulation activity?

• To see the sand better

• To protect the eyes from blowing sand

• To enhance the color of the sand

• To keep the sand from getting wet

What is the recommended angle for holding the straw during the wind simulation?

• Straight up from the ceiling

• Parallel to the tray

• 90 degrees

• 30 to 45 degrees

What is the effect of holding the straw parallel to the tray during the wind simulation?

• The wind is too strong

• The wind does not affect the sand

• The wind might not achieve the desired effect

• The wind blows the sand upwards

What is the result of using a hard blow during the wind simulation?

• The sand is gently moved

• The sand is blown away too intensely

• The sand remains in place

• The sand changes color

What happens to the sand when a strong wind is simulated using a straw?

• The sand remains in place

• The sand is blown into a new pile

• The sand becomes wet

• The sand changes color

How does the wind affect the rocks in the sand landscape?

• The rocks are exposed

• The rocks become buried

• The rocks are blown away

• The rocks change color

What is observed on one side of the original sand dune after the wind simulation?

• The sand has turned into rocks

• The colored sand is displaced

• The colored sand is still present

• The sand is unchanged