Dunes Wind Erosion and Sands

How does wind weather a rock?

• The wind slowly drills a hole in the side of a rock.

• The wind smashes big rocks against each other.

• The wind shakes the big rock and makes it weak.

• The wind blows tiny pieces of rock against a big piece of rock. The tiny pieces slowly break the big piece.

Tags

NGSS.MS-ESS2-2

How does wind erode rocks?

• The wind just leaves the pieces of rock where they are.

• When small pieces of rock or sand fall off of a big piece, the wind blows them away and deposits them somewhere else.

• Wind does not erode rocks.

• The wind turns the sand back into rock.

Tags

NGSS.MS-ESS2-2

How do sand dunes move?

• Wind blows sand over the edge of the dune and drops it on the other side.

• Wind moves the entire sand dune at once.

• Wind blows the bottom part of the sand dune, and makes it move.

• Wind picks up the sand dune and drops it somewhere else.

How far can a sand dune move in one year?

• About 2 meters.

• About 25 meters.

• About 25 kilometers.

• About 25 centimeters.

Tags

NGSS.MS-ESS2-2

Wind can move bigger pieces of rock than water can.

• True

• False

Wind can carry sand and dust farther than water can.

• True

• False

Tags

NGSS.MS-ESS2-5

What can help protect against wind erosion?

• Rocks

• Sand

• Plants

• People

Where do you think wind erosion is most common?

• Deserts

• Jungles

• Forests

• Cities

Tags

NGSS.MS-ESS2-2

What is true about the Dust Bowl?

• Farmers removed the grass that was protecting against wind erosion.

• The people were happy and took care of nature.

• There was a drought. The farmers' crops died and exposed the soil.

• There was so much dust that it even buried houses!

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-5

What is a windbreak?

• It is a wall that people build to keep the wind out.

• It is when the wind breaks.

• It is a row of small plants.

• A row of plants (like trees) on the side of the farm to protect it against most of the wind.