Sand Dunes
mario‚ NH | Sand Dunes
I have never ever seen a sand dune
Mike‚ CA | Sand Dunes
Did you know the sand dunes in the Sahara Desert can make a low-frequency humming sound.
Jeanny, NJ | Sand Dunes
sand dunes are like hills that are made of sand
Taylor, NF | Sand Dunes
What are sand dunes?Cause I really want to know.Can you send it back tomorrow?
Chris, PA | Sand dunes
The biggest sand dunes in the United States are in Colorodo.
Greg , OH | GREAT JOB
I watched "dragonflytv" on my PBS station this morning in Cleveland, Ohio on "Ecosystems". I Thought it was very interesting when the two young girl scientists measured the amount of moisture in the different sand dunes: fore dunes had the most, next was scrub and third was the active ones, with no moisture at all. GREAT JOB, Victoria and Alajandra! And Michael and Marko are great hosts. Sincerely, a fan of the show, Greg
April, 11, CA | Sand Dunes
Are sand dunes all the same?
April, 11, CA | Sand Dunes...reply
My guess is that all sand dunes are different in at least on way, since wind shapes
and forms them all the time. However, there are five basic types of sand dunes.
You can go here for some pictures of them: http://pubs.usgs.gov/gip/deserts/dunes/
