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Chapter 2 Water Test Mirabello 2013
Chapter 2 Water Test Mirabello 2013
38
Science
6th Grade
01/19/2013

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Term
Chapter 2 Test Water Mirabello 2013
Definition
Term
Runoff is rainfall that
Definition
Flows over ground surface
Term
The land area that supplies water to a river system is a
Definition
Watershed
Term
Rivers wear away rock & soil through
Definition
Erosion
Term
An increase in the amount of water in a river usually causes the river to
Definition
Flow faster
Term
A lake can be formed by
Definition
Water collecting in a hollow left behind by melting ice, water filling the crater of a volcano, or a dam blocking, the flow of a river
Term
A lake that stores water for human use is a
Definition
Reservoir
Term
A green film of algae in a fish tank is an example of
Definition
Eutrophication
Term
A seasonal change that refreshes the supply of nutrients throughout a lake is
Definition
Lake turnover
Term
Wetlands help control flooding by
Definition
Absorbing runoff from heavy rains
Term
Scientists want to preserve the everglade wetlands because
Definition
Many endangered species live there
Term
The ice sheet that covers that Antarctica is a
Definition
Glacier
Term
A glacier forms when
Definition
Heavy layers of snow become solid ice
Term
The underwater part of an iceberg is a hazard to ships because
Definition
It is much wider than the visible part
Term
Icebergs form when
Definition
The end of a glacier reaches the coast & breaks off
Term
Materials that allow water to easily pass through them are
Definition
Permeable
Term
A type of hot spring from which water bursts into the air is a
Definition
Geyser
Term
Things that affect the amount of runoff are
Definition
Flat or hilly land, nature of ground surface, & rate of rainfall
Term
The many small streams that come together at the source of a river are
Definition
Headwaters
Term
A crescent-shaped body of water next to a river is an
Definition
Oxbow lake
Term
Types of freshwater wetlands are
Definition
Marshes, swamps, & bogs
Term
Rivers build up landforms like deltas through a process called
Definition
Deposition
Term
When a river overflows its banks
Definition
Flooding occurs
Term
A body of standing water deep enough that sunlight does NOT reach the bottom is a
Definition
Lake
Term
Dead leaves and plant material add nitrogen and other
Definition
Nutrients to wetlands
Term
A seasonal change that refreshes the supply of nutrients throughout a lake is called
Definition
Lake turnover
Term
The levels of nutrients in a lake build up in a process called
Definition
Eutrophication
Term
A ridge of land that separates 2 watersheds is a
Definition
Divide
Term
Many rare & endangered species live in a wetland in Florida called the
Definition
Everglades
Term
Wetlands help prevent
Definition
Flooding
Term
Wells that end in saturated zones end in
Definition
Aquifers
Term
Wells which will not provide water are
Definition
Above the water table or in impermeable material
Term
A delta is close to
Definition
The mouth of a river
Term
Tributaries
Definition
Add more water & volume to a river
Term
A delta is formed when
Definition
Water slows down at the end of a river and sediment and deposits build up a delta
Term
Headwaters are
Definition
Small streams at the source of a river that are narrow, cold, & fast moving
Term
Lakes & ponds differ because
Definition
Lakes are deep enough that sunlight cannot reach the bottom and a Pond's bottom is covered with mud & algae
Term
Wetlands are worth preserving because
Definition
They provide habitats for animals & plants, are a natural water filtration system, and they help control floods
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