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EOG Prep 1
Test Description: Prep for 8th Grade Science EOG
Instructions: Answer all questions to get your test result.
1) Oil and gas discharge from autos and storm drains is a form of
A
sedimentation
B
urban runoff
C
bacteria
D
agriculture
2) SONAR is used to
A
water depth
B
dissolved oxygen in water
C
pH levels in water
D
measure water temperature
3) Which property os water is being tested if you drop solids in to it to see if they will float?
A
cohesion
B
density or buoyancy
C
polarity
D
solubility
4) Which best explains the importance of dissolved gses in the ocean?
A
help maintain a constant temperature
B
to control pollution
C
help provide oxygen for aquatic animals
D
help maintain constant salinity
5) A bioindicator is
A
a species that has been introduced to an ecosystem
B
a species that can adapt to a variety of conditions
C
a species that has a short life span
D
a species that depends on specific conditions to survive
6) How is the atmosphere a part of the hydrosphere?
A
It is a source of water
B
It blocks ultraviolet rays from the sun
C
It contains the oxygen necessary for life on Earth.
D
It traps pollutants
7) Which describes a nonpoint source of pollution?
A
chemical spill in a river next to a factory
B
liquid fertilizer flowing from a barrell into a stream
C
runoff from a road into a nearby stream
D
oil in a stream next to a gas station
8) Which statement best explains the reason some insects can walk across the surface of a lake?
A
Water is a non-polar molecule, and its adhesiveness causes high surface tension
B
Water is a non-polar molecule, and its cohesiveness causes good capillary action
C
Water is a polar molecule, and its cohesiveness causes high surface tension
D
Water is a polar molecule, and its adhesiveness causes good capillary action
9) Seasonal tourism can cause a shortage of the freshwater supply in some coastal areas. They then have to buy water from another source. What does this describe?
A
economic trade-off
B
point source pollution
C
excess nutrient input
D
environmental stewardship
10) Whis is a connection between an aquatic and terrestrial food web?
A
a turtle burying eggs
B
a bear eating a fish in a river
C
a bird laying eggs in a nest in a tree
D
a fish eating plankton in the ocean
*select an answer for all questions
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