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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
bacteria
B
agriculture
C
urban runoff
D
sedimentation
2) SONAR is used to
A
dissolved oxygen in water
B
measure water temperature
C
water depth
D
pH levels in water
3) Which property os water is being tested if you drop solids in to it to see if they will float?
A
density or buoyancy
B
polarity
C
solubility
D
cohesion
4) Which best explains the importance of dissolved gses in the ocean?
A
to control pollution
B
help maintain a constant temperature
C
help provide oxygen for aquatic animals
D
help maintain constant salinity
5) A bioindicator is
A
a species that depends on specific conditions to survive
B
a species that has been introduced to an ecosystem
C
a species that can adapt to a variety of conditions
D
a species that has a short life span
6) How is the atmosphere a part of the hydrosphere?
A
It blocks ultraviolet rays from the sun
B
It contains the oxygen necessary for life on Earth.
C
It is a source of water
D
It traps pollutants
7) Which describes a nonpoint source of pollution?
A
liquid fertilizer flowing from a barrell into a stream
B
oil in a stream next to a gas station
C
runoff from a road into a nearby stream
D
chemical spill in a river next to a factory
8) 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 causes 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
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
point source pollution
B
excess nutrient input
C
environmental stewardship
D
economic trade-off
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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