WorksheetsMidterm Exam
Total questions: 35
Worksheet time: 18mins
Name
Class
Date
1.
In the nitrogen cycle, the process where ammonia (NH3) is converted into nitrites (NO2) and nitrates (NO3) is called:
a)
Nitrification
b)
Nitrogen Fixation
c)
Denitrification
d)
Producer Uptake
2.
Which of the following processes is shown by arrow 2 in the image below?
a)
Nitrification
b)
Nitrogen Fixation/Ammonification
c)
Denitrification
d)
Producer Uptake
3.
Which of the following processes is shown by number 5 in the image below?
a)
Ammonia (NH3)
b)
Atmospheric Nitrogen (N2)
c)
Nitric Oxide (NO)
d)
Nitrite (NO2) and Nitrate (NO3)
4.
Which of the following processes is shown by arrow 3 in the image below?
a)
Producer Uptake
b)
Weathering
c)
Decomposition
d)
Runoff/Leeching
5.
Which of the following processes is shown by arrow 1 in the image below?
a)
Producer Uptake
b)
Weathering
c)
Decomposition
d)
Runoff/Leeching
6.
Which of the following processes is shown by arrow 2 in the image below?
a)
Photosynthesis
b)
Gas Exchange
c)
Cellular Respiration
d)
Combustion
7.
Which of the following processes is shown by arrow 4 in the image below?
a)
Decomposition
b)
Nutrition/Feeding
c)
Cellular Respiration
d)
Combustion
8.
Which arrow in the image below shows the following process: Gas Exchange
a)
3
b)
5
c)
6
d)
7
9.
This is released by the weathering of rocks.
a)
Phosphorus
b)
Water
c)
Nitrogen
d)
Carbon
10.
Why is excess fertilizer bad for aquatic ecosystems?
a)
algal blooms are created which blocks out sunlight
b)
without sunlight aquatic plants stop photosynthesis and don't produce oxygen
c)
fish and other aquatic organisms are deprived of oxygen and die
d)
All of the answer choices
11.
Which statement is FALSE about the nitrogen cycle?
a)
All organisms need nitrogen to build proteins
b)
Nitrogen makes up 78% of the atmosphere
c)
The human body can use nitrogen gas directly from the atmosphere
12.
This is the only cycle that does not involve movement of nutrients into the atmosphere
a)
Phosphorus
b)
Carbon
c)
Nitrogen
13.
This cycle is impacted by forest fires and deforestation.
a)
Water
b)
Carbon
c)
Nitrogen
14.
Which biogeochemical cycle is represented by the image?
a)
Life cycle
b)
Nitrogen cycle
c)
Carbon Cycle
d)
Water Cycle
15.
How do living organisms return carbon to the atmosphere in the carbon cycle?
a)
nitrogen fixation and combustion
b)
decomposition and combustion
c)
cellular respiration
d)
nitrogen fixation and photosynthesis
16.
What impact do humans have on the carbon cycle?
a)
Burn fossil fuels through combustion adding carbon to the atmosphere
b)
Add fossil fuels to the soil through combustion removing carbon from the atmosphere
c)
Add carbon to plants through photosynthesis.
d)
Move carbon between the atmosphere and ocean through gas exchange.
17.
Which organisms act as a bridge between the nitrogen in the atmosphere and the nitrogen on land?
a)
Cows
b)
Bacteria
c)
Producers
d)
Humans
18.
How does carbon dioxide LEAVE the atmosphere?
a)
Through transpiration
b)
Through photosynthesis
c)
Through factory emission
d)
Sunlight
19.
Why do heterotrophs need nitrogen?
a)
making DNA (amino acids) and proteins
b)
for photosynthesis
c)
for cellular respiration
20.
Converting atmospheric nitrogen into a usable form by bacteria or lightning is known as _______.
a)
Nitrogen Fixation
b)
Denitrification
c)
Ammonification
d)
Assimilation
21.
Which of the following processes is shown by arrow 3 in the image below?
a)
Evaporation
b)
Transpiration
c)
Precipitation
d)
Infiltration
22.
Which arrow in the image below shows the following process: Condensation
a)
1
b)
2
c)
4
d)
5
23.
Another name for this cycle is the hydrologic cycle.
a)
Phosphorus
b)
Water
c)
Nitrogen
d)
Carbon
24.
What are the three steps to water purification?
a)
sanitation, percolation, regulation
b)
flocculation (removing flock by settling), filtration, disinfection
c)
filtration,disinfection, filtration
d)
filtration, floculation(settling), sanitation
25.
What type of water has been used for washing, flushing, or manufacturing?
a)
Mineral Water
b)
Groundwater
c)
Surface Water
d)
Wastewater
26.
Water scarcity is a problem and will continue to be a problem as water supplies decrease and populations________________.
a)
grow
b)
shrink
c)
move
d)
migrate
27.
Which of the following is a way to conserve water?
a)
take a longer shower
b)
Use overhead sprinkler irrigation methods
c)
do multiple loads of laundry
d)
Turning off the tap water when brushing your teeth
28.
What percentage of the water on Earth is drinkable?
a)
Less than 1%
b)
20%
c)
50%
d)
100%
29.
Of the 3 types of irrigation methods, which one is the most efficient?
a)
digging trenches
b)
drip
c)
sprinklers
d)
splash
30.
Which of the following is an example of POINT source water pollution?
a)![]()
dump truck of trash from a building
b)
pipe of pollutants from a business
c)
oil and chemicals from a warehouse
d)
All of the Above are examples of point source water pollution
31.
Read This! 📚 Terrance thinks that if people are exposed to above average amounts of UV light then they are more likely to get skin cancer. He designs an experiment in which Group A was exposed to above average amounts of UV light every day for a month while Group B was exposed to normal amounts of UV light for a month. He then measured the occurrence of skin cancer in both groups. 🟦What is Terrance's hypothesis?🟦
a)
If people are exposed to BELOW average amounts of UV light, then they are MORE likely to get skin cancer
b)
If people are exposed to ABOVE average amounts of UV light, then they are MORE likely to get skin cancer
c)
If people wear sunscreen then they will be less likely to get skin cancer.
d)
If there is less UV light on earth then the earth will be warmer.
32.
Which of the following data are QUALITATIVE only?
a)
21.3 g and cloudy yellow
b)
cloudy yellow and no smell
c)
no smell and 20.3 degrees Celsius
d)
21.3 g and 20.3 degrees Celsius
33.
What would happen if the berries disappeared?
a)
The rabbit population would increase.
b)
The titmouse (bird) population would decrease.
c)
The Butterfly population would increase
d)
Nothing would change.
34.
What are the reactants in photosynthesis?
a)
Carbon Dioxide and Water
b)
Glucose and Water
c)
Sunlight and Water
d)
Oxygen and Glucose
35.
Cattle egrets (bird) eat the insects stirred up by cattle when they are grazing. The cattle are unaffected, while the birds gain food.
a)
mutualism
b)
parasitism
c)
commensalism
d)
None of the above
100 %
