This is the _________ of the moon.
surface
What is at the bottom of a canyon?
a river is at the bottom of a canyon.
How does sand get to the beach? Where does it come from?
Rocks are carried from the mountain to the beach by the river. Rocks crash against each other and become sand.
Where does a river start?
in the mountains
canyon
Where does a river end?
The ocean
Something that is very small is called _________ .
tiny
Why does beach sand have different colors?
Beach sand gets its color from rocks in the mountains
erosion
a river _______ downstream.
flows
something that is not normal.
strange