science water unit test Flashcards
science
water on earth is ————in the water cycle
recycled endlessly
vrai ou faux the quality and quantité d’eau are both important environmental concerns
vrai
—% of water on earth is salt water
97%
3% of water on earth is fresh most of it is —-
frozen in ice or glaciers
vrai ou faux: Both glacial erosion and glacial deposition
have affected and continue to affect the surface
features of Earth.
vrai
————————- mountains act as natural freshwater storehouses
Icefields, glaciers, and snow in high
studying ancient—-can reveal clues about the climate of the past
Ice
many scientists believe one reason for global warming is greenhouse gases in the ——
Earths atmosphere
Fresh water exists both above ground as——-, and below ground
eau de surface, eau souterraine
le usage de la terre peut affecter ————- et le santé d’un watershed
l’eau de ruissellement
The rate of flow of a stream affects how much ————————, as well as the amount of
sediment the stream transports.
erosion takes place
By studying the quantity, quality, and characteristics of sediment in a stream or river, scientists
and engineers can determine the impact of
——————————–.
pollutants on the aquatic environment.
Large withdrawals of groundwater are resulting
in ——————— in many areas.
aquifer depletion
les organismes végétaux dans
plancton
phytoplancton
les organismes animaux du plancton
zooplancton