Arches National Park
This National Park was made of sandstone
Arches National Park
Beaches are made of tiny pieces of rock and
Sea shells
Most of Earth is covered by ______ water.
Oceans
______ and water wear away the rocks over many years
Wind
Waves move _______ along the shore.
Sand
The seafood has Mountains, valleys, and volcanoes just like ______.
Land
This process forms arches, _________, and fins
Pinnacles
Sand _____ form when wind blows sand into piles.
Dunes
She was a scientist who mapped the ocean floor
Marie Tharp
These shapes can also form near _____ where water and wind erode rock.
Oceans
Grass and ______ help keep sand dunes. From blowing away
Plants
Sonar
People use fences and _______ to protect dunes and beaches.
Jetties