WorksheetsEnvironmental Science Exam Review
Total questions: 25
Worksheet time: 25mins
This abiotic factor is necessary for the health of the food chain in the creek because most aquatic organism require this gas to live.
pH
Dissolved Oxygen
Water Temperature
Conductivity
Fecal Coliform
Which abiotic factors affect the health of a stream?
pH
Dissolved Oxygen
Water Temperature
Conductivity
Fecal Coliform
Dossolved oxygen testing requires that both samples are within _____ of each other.
+/- 0.5
+/- 0.6
+/- 0.7
+/- 0.8
True or False: The higher the dissolved oxygen the better?
True
False
DO levels may decrease due to......(choose as many that apply)
warm temperatures
photosynthesis
turbulent mixing (riffles)
an overload of decaying organic matter
Creek critters function best within a narrow range of 6.0 to 8.5.
pH
Dissolved Oxygen
Water Temperature
Conductivity
Fecal Coliform
This abiotic factor determines the ion concentration in the water.
pH
Dissolved Oxygen
Water Temperature
Conductivity
Fecal Coliform
What is the acceptable pH range in SC streams?
349 CFU
4 ppm - 6 ppm
6.0 -8.5
20 to 100
What conditions can cause an increase in bacterial levels?
Low water temperature and clean water
Organic matter, runoff, and warm temperatures
High dissolved oxygen levels
Rocks and woody debris in the stream
What is epifaunal substrate, and why is it important to the health of a stream?
It is the water's temperature and helps fish regulate their body heat.
It is the stream surface where aquatic organisms live and provides food, shelter, and protection.
It measures bacterial growth in streams.
It is a type of chemical that removes carbon from the water.
What type of stream habitat allows for the greatest diversity?
A stream with stagnant water and no vegetation
A stream with varied substrates, such as rocks, logs, and clean water
A stream with only sandy bottoms and slow-moving water
A stream with polluted water and high bacterial levels
What is the purpose of conducting scientific tests or quality control tests more than once?
To save time in data collection
To make results look better
To ensure data accuracy and reliability
To test different water sources
How close should pH be together when tested multiple times for stream health?
Within 1.0 pH unit
Within 0.2 pH units
Within 0.5 pH units
Within 2.0 pH units
How does deforestation affect global warming?
It increases global warming due to high sunlight reflection from bare ground
It decreases global warming because more carbon dioxide is absorbed.
It increases global warming because less carbon dioxide is absorbed.
It has no effect on global warming.
The study of the complex relationships between living things and their environment is called
ecology
geology
scientific method
biosphere
Climate in a region is
determined only by seasonal daylight hours
the long-term, prevailing atmospheric conditions.
the atmospheric conditions on a given day.
never affected by ocean currents.
Rain frequently results whenever
cold, moist air rises
warm, moist air rises
cold, dry air sinks
warm, dry air sinks.
Latitude strongly influences climate because _____ solar energy falls on areas that are closer to the equator than to the poles.
less
the same amount of
more
sometimes less
Which gas makes up 78 percent of our atmosphere but can be used by plants only when transformed by bacteria first?
carbon dioxide
hydrogen
oxygen
nitrogen
According to one source, approximately 70% of the world’s freshwater is currently used by agricultural industries. What problem is at the root of this stress on the world’s freshwater sources?
increasing numbers of pathogens in aquatic ecosystems
exponential human population growth
development of genetically modified crops
lack of funding for aquaculture programs
Why is stratospheric ozone beneficial to life on Earth?
Stratospheric ozone is an important part of the water cycle.
Stratospheric ozone absorbs UV radiation that is dangerous to life.
Stratospheric ozone reverses the greenhouse effect in the atmosphere.
Stratospheric ozone produces much of the oxygen that life uses for respiration.
What is the primary cause of ocean acidification?
Increased levels of carbon dioxide in the atmosphere
Decreased levels of oxygen in the atmosphere
Increased levels of nitrogen in the atmosphere
Decreased levels of methane in the atmosphere
Which of the following is a renewable energy source?
Coal
Natural Gas
Solar Power
Nuclear Power
What is the main purpose of the Kyoto Protocol?
To reduce greenhouse gas emissions
To protect endangered species
To promote recycling
To conserve water resources
Which process is primarily responsible for the greenhouse effect?
Photosynthesis
Respiration
Combustion of fossil fuels
Evaporation
