Erosion
Where do all rivers end?
In the ocean
What is strong enough to break rocks?
Water
Mountains, Canyons, Valleys, Plains, etc.
What body of water is big, surrounded by land on all sides, and still?
Lake
What is sand made of?
Rocks
What causes erosion?
Water and wind
What happens if water freezes in a crack in the rock?
The water expands and breaks the rock.
What body of water is long, thin, and flows?
River
Why might sand be purple?
If the rocks are purple, the sand will be, too.
A stream is 5 inches deep when you first visit it. If you come back in 50 years, will the stream be deeper or more shallow?
Deeper
What are islands made of?
Underwater mountains or volcanoes, or floating dirt
Name at least 2 bodies of water.
Ocean/Sea, River, Lake, Pond
How do rocks from the mountains end up as sand on the beach?
Rivers break them apart and carry them down to the beach.
What are some ways to prevent erosion?
Plant plants, put up walls, etc.
Name 3 features you might find on a map.
Mountains, forests/trees, rivers, lakes, ponds, canyons, roads, etc.
What causes erosion to happen fast?
Lots of quickly moving water.
Name at least 3 factors that may cause flash floods.
Clay soil, heavy rainfall, steep mountains and cliffs, pavement in cities.
What is a landslide?
When water and other natural causes make the land break loose and slide away.
Where are landslides most likely to happen?
Mountains and cliffs (Steep areas)
What kinds of landforms can erosion cause?
Valleys, cliffs, etc.