 | Term | Definition |
| |
soil and rock |
Besides water, rivers carry large amounts of what ? |
| |
dissolve |
Some rocks break apart because mineral |
| |
glaciers |
Moraines are depostits left over by ? |
| |
oceans |
What changes shorelines. |
| |
glaciers |
What forms moraines |
| |
rivers of ice |
Valley glaciers are ____ . |
| |
valleys and canyons |
When streams and rivers erode the land they form ____ . |
| |
rivers |
What can erode canyons |
| |
the soil and rocks settle at the bottom |
When rivers reach flat land and the water slows down what happens? |
| |
8 million years |
The Colorado River has been carvng the Grand Canyon for about _____ . |
| |
weathering |
The breaking down and wearing away of rocks is called what ? |
| |
weathering |
Water seeping into cracks and freezing is an example of ? |
| |
waterfalls |
What erodes their own cliffs? |
| |
cracks get bigger |
When water seeps into the cracks of rocks and freezes what happens to the cracks? |
| |
erosion |
The movement of weathered rocks and soil by water is called? |
| |
erosion |
Rock and soil moved by glaciers and rivers is an example of what? |
| |
rivers |
Canyons have been formed by what? |
| |
change the shoreline |
Ocean waves can ______ ? |
| |
erode rocks |
Over a period of time a waterfall can _____ . |
| |
grind rocks together |
Some beach sand is formed when ocean waves ___ . |
| |
creeps slowly forward |
What does a typical valley glacier do ? |
| |
water |
The weathering of rocks is caused by wind and _____ . |
