What can visitors see from the rim of Grand Canyon?
Colorado river
Where is Grand Canyon located?
Northern Arizona
What is gravity?
A force that pulls objects toward the center of Earth.
What is called sediment?
Very small pieces of sand and minerals set down by water wind or etc.
The smoothness of the rock on a beach is result of _____________.
weathering waves of ocean and wind blowing on the beach
Grand Canyon is one of the best examples of __________.
Weathering and Erosion.
Define Weathering.
The breaking down or wearing down or wearing away of rocks by water and wind.
_________ weathering changes the ________ of rock or soil.
Chemical, color
About when did the Grand Canyon begin to form?
About five of six million years ago.