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Water Unit
Test Description: Water unit review (fresh water and oceans)
Instructions: Answer all questions to get your test result.
1) Approximately what percentage of Earth’s water is salt water?
A
97%
B
3%
C
30%
D
70%
2) Most of Earth’s fresh water is in the form of _____.
A
groundwater
B
oceans
C
ice
D
rivers and streams
3) The energy for the water cycle originally comes from the _____.
A
sun
B
wind
C
ground
D
water
4) Water that fills the cracks and spaces in underground soil and rock layers is called __.
A
water vapor
B
rainwater
C
salt water
D
groundwater
5) Water that falls to Earth as rain, snow, sleet, or hail is called ____.
A
precipitation
B
condensation
C
evaporation
D
transpiration
6) Clouds form when water vapor in the atmosphere ______ into water droplets.
A
transpires
B
condenses
C
evaporates
D
precipitates
7) The top of the saturated zone is called the _____.
A
impermeable
B
water table
C
granite
D
depends
8) An aquifer is a(n) ____.
A
underground layer of rock or sediment that holds water
B
type of hot spring from which the water periodically erupts
C
place where groundwater bubbles or flows out of cracks in the rock
D
well in which water rises because of pressure
9) Salinity is a measure of which of the following in water?
A
carbon dioxide
B
oxygen
C
sand
D
dissolved salt
10) As you descend through the water column (go deeper down in the ocean), ___.
A
light increases
B
pressure decreases
C
density decreases
D
temperature decreases
11) A large stream of moving water that flows through the oceans is called a(n) ___.
A
tsunami
B
current
C
undertow
D
tide
12) Which of the following is true of El Niño?
A
El Niño usually occurs twice a year.
B
El Niño can cause unusual and often severe weather conditions.
C
El Niño affects only the ocean, not the land.
D
El Niño occurs at the same time as La Niña.
13) What causes cold, deep currents to form in the oceans near the poles?
A
sinking of cold, freshwater from melting icebergs
B
the Coriolis force
C
movement of a large mass of warm water across the Pacific
D
sinking of dense, cold water with high salinity
14) Which describes materials that have large connected pores, such as sand and gravel?
A
unsaturated
B
saturated
C
permeable
D
impermeable
15) By knowing the water table depth, you know how deep to dig to reach which of the following?
A
pores
B
granite
C
springs
D
groundwater
16) Deep currents are caused by differences in the _______________________ of ocean water.
A
climate
B
density
C
color
D
sea life
17) A large, powerful warm surface current in the Atlantic Ocean that affects the climate of land in its path is the ___.
A
La Nina
B
Gulf Stream
C
El Nino
D
geyser
18) Water given off through the leaves as water vapor.
A
evaporation
B
transpiration
C
precipitation
D
condensation
19) Process where liquid changes to a gas.
A
condensation
B
precipitation
C
transpiration
D
evaporation
20) Process where a gas changes to a liquid.
A
transpiration
B
precipitation
C
condensation
D
evaporation
*select an answer for all questions
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