Earth Science Semester 2 - Quiz 2: Fresh Water
How much of Earth's freshwater is found underground?
30%
Lakes ______.
Are recharged by precipitation
Melinda lives in a larger, U-shaped valley. It was most likely formed by ______.
a glacier
A watershed is _____.
an area where all draining water goes into the same river system
Rivers _____.
change the landscape through erosion
In landlocked lakes, water is discharged primarily through ______.
evaporation
Glaciers _______.
form when snow compresses into ice
The water in the Dead Sea has a salinity of 300 ppt. The water _____.
has 300 grams of salt per 1000 grams of sea water
Which of the following materials is most porous? Shale Clay Loosely packed gravel Unsorted sand and rock
loosely packed gravel
Most lakes were formed from _______.
melting glaciers
How freely water moves into and through soil or rock is called ______.
permeability
The water table is ______.
the top layer of the saturated zone
Global warming ______.
threatens polar ecosystems
Which of the following statements is true? Unconfined aquifers are found between two layers of impermeable soil or rock. The Arctic ice cap floats on top of the Arctic Ocean. More of Earth's freshwater is found in rivers than in lakes. Glaciers and ice caps are made of saltwater.
The Arctic ice cap floats on top of the Arctic Ocean.
