Beach Sand

What materials do you think make up beach sand? 
How do these materials end up on the beach ? 

subsidence

Why would the ground level in these pictures sink or collapse after pumping out water?

What type of rock probably underlies an area where something like this occurs ?

Wells and Ground Water

Why might you be concerned if developers of a new housing project 

started drilling wells near your well?

Please click  on the  link and take the  ground water quiz on the USGS page .

Ground Water Info and Quiz

Ground Water

What is groundwater ?

What sort of Pollution could affect ground water? 

Please Check out the link for more information 

Ground Water Link

Natures Hot Tub

Imagine you are a Japanese macaque and it's a cold snowy day. What do you do ?
If your lucky you live near a hot spring where you could find a warm refuge from
the winter storm. The Japanese macaque lives further north than and other ape or monkey. 
How can you tell the water in this spring is hot?
Where do you think the water in the hot spring comes from?
Please make your own post and reply to one other about the hot springs.

River Flooding

What causes rivers to flood ? Explain what dams and levees are and how they relate to flooding? 

RIvers Old or Young

One of the oldest rivers in the United States is the New River.

These are some pictures of the New River.

What evidence do you see in the pictures that make it look like and old river. 

Research at least two facts about the New River and included them in your post 

with your source cited.