Water on Earth
There is _____ percent of freshwater.
What is 3%
The streams and small rivers that feed into a main river are called
what is tributary
Water that fills the cracks and spaces in underground soil and rock layers is called
what is groundwater
______________ wetlands contain both fresh and salt water.
what is costal
When surface waters in the eastern pacific are colder than normal, a climate event known as ________ occurs.
what is La Nina
Most of Earth's freshwater is in the form of ______.
What is Ice
The water in ponds and lakes are ______ water.
What is still
A ridge of land that separates two watersheds is called
what is divide
Which wetland likely formed in depressions left by pieces of melting ice sheets thousands of years ago?
what is bog
The effect of Earth's Rotation on the direction of winds and currents is called the
hat is Coriolis Effect
The energy for the water cycle comes from the
what is the sun
A large stream of moving water that flows through the ocean is called
what is current
Which describes materials that have large and connected pores, such as sand and gravel?
permeable rocks
Marshes, bogs, and lakes are examples of __________ wetlands.
what is freshwater
Deep currents are caused by differences in the ____________________ of an ocean.
what is density
__________ form when water vapor in the atmosphere condenses into water droplets
What is clouds
Explain why some rivers experience severe springtime flooding as snow and ice melt along a small mountain stream.
answers vary
Lakes can disappear due to
eutrophication
Which Wetland looks like flooded forests with trees and shrubs?
what is swamps
What causes cold, deep currents to form in the ocean near the poles.
what is dense, cold water with high salinity
The three main parts of the water cycle are
What is Evaporation, Condensation, and Precipitation
How would the variety of organisms in the center of a pond differ from those in deep water at a lake's center?
answers vary
Over many years, the levels of nutrients in a lake build up in the process of
eutrophication
land area that is covered with a shallow layer of water during some or all of the year is a
what is wetland
What causes surface currents? What causes deep currents?
answer vary