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Hydrosphere: Earth's Water
Test Description: This activity is to review 8th grade students on the hydrosphere.
Instructions: Answer all questions to get your test result.
1) Where is the majority of freshwater on Earth be found?
A
Lakes and rivers
B
Icecaps and glaciers
C
Swamps and wetlands
D
Groundwater and aquifers
2) Which of the following practices is not a good way to conserve water?
A
Wash only full loads of laundry
B
Turn the water off when brushing teeth
C
Keep the water running while washing dishes
D
Take showers that last 5-10 minutes
3) Where is most of Earth's available freshwater stored?
A
Icecaps and glaciers
B
The atmosphere
C
Lakes and rivers
D
Underground
4) Groundwater supplies are stored in
A
Watersheds
B
Aquifers
C
River basins
D
Lakes and rivers
5) What is the large area of land that drains all of its water to a river when the surface is saturated?
A
Watershed
B
River basin
C
Aquifer
D
Estuary
6) What land use would be the best choice for watershed drainage?
A
Mall
B
Recreational area
C
Wetland
D
Parking lot
7) Which statement best explains the reason some insects can walk across the surface of a lake?
A
Water is a polar molecule, and its adhesiveness causes good capillary action.
B
Water is a non-polar molecule and its adhesiveness provides high surface tension.
C
Water is a polar molecule, and its cohesiveness causes high surface tension.
D
Water is a non-polar molecule, and its cohesiveness causes good capillary action
8) Which of the following would greatly effect a towns storage of usable water
A
its location to a glacier or ice cap
B
its distance from the ocean
C
its average winter temperature
D
the amount of precipitation it gets
9) most evaporation occurs in
A
the ocean
B
Lakes and rivers
C
Groundwater and aquifers
D
watersheds
10) Which best explains the relationship between water stored in the ocean and water stored in groundwater?
A
Water from the ocean enters groundwater directly through the soil by infiltration, but groundwater does not enter the ocean w
B
Water from the ocean evaporates condenses, and forms precipitation which enters groundwater through the soil by infiltration,
C
Water stored in the ocean remains separate from water stored in groundwater, and the two sources of water do not interact
D
Water stored in ground water enters the ocean directly as discharge, but ocean water does not enter groundwater
11) Which best explains why so little of the water on Earth is available for human use?
A
97% of total water on Earth is salt water, and most of the remaining 3% is freshwater found in lakes, rivers, and ponds.
B
97% of total water on Earth is freshwater, and most of the remaining 3% is salt water found in underground aquifers.
C
97% of total water on Earth is freshwater, and most of the remaining 3% is salt water in the ocean basins
D
97% of total water on Earth is salt water, and most of the remaining 3% is freshwater frozen in ice caps and glaciers.
12) Which statement best compares the amount of water present on Earth today to the amount present millions of years ago?
A
Significantly less water on Earth today
B
Slightly more water on Earth today
C
Significantly more water on Earth today
D
About the same amount of water today
13) Which statement best describes an estuary?
A
An estuary is a partly enclosed body of water where the river meets the ocean.
B
An estuary is the extension of a continent located underwater.
C
An estuary is land that is exposed at low tide and underwater at high tide.
D
An estuary is a deep body of water that contains very large aquatic animals.
14) Which of the following is not associated with upwelling?
A
lots of nutrients are brought to the surface which feeds many marine organisms
B
Upwelling is not very important to an ocean system
C
deep, cold water rises toward the surface
D
Upwelling is a result of winds and the rotation of the Earth
15) Which process occurs in the ocean and contributes large amounts of oxygen to the atmosphere?
A
decomposition and bacteria
B
photosynthesis and phytoplankton
C
chemosynthesis and bacteria
D
respiration and zooplankton
*select an answer for all questions
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