Worksheets1.5-1.6 Systems, Spheres and Nutrient Cycles Quiz
Total questions: 16
Worksheet time: 8mins
Name
Class
Date
1.
What is the biosphere?
a)
The layer of the atmosphere where weather occurs
b)
The parts of the atmosphere, hydrosphere, and geosphere where life exists
c)
The thin envelope of gases surrounding the planet
d)
The core, mantle, and thin outer crust of the Earth
2.
What is the primary source of energy for the Earth's systems?
a)
Solar energy
b)
Geothermal energy
c)
Nuclear energy
d)
Wind energy
3.
What is the process by which green plants and algae make their own food using the energy of sunlight?
a)
Photosynthesis
b)
Respiration
c)
Decomposition
d)
Transpiration
4.
What is the role of decomposers in an ecosystem?
a)
To produce their own food through photosynthesis
b)
To break down nonliving organic matter
c)
To feed on primary consumers
d)
To eat both plants and animals
5.
What is a food web?
a)
A sequence of organisms that serves as a source of nutrients or energy for the next level of organisms
b)
A complex network of interconnected food chains
c)
The process by which green plants and algae make their own food
d)
The movement of matter through air, water, soil, rock, and living organisms within ecosystems
6.
What is the hydrologic cycle?
a)
The movement of carbon throughout the Earth's systems and spheres
b)
The movement of nitrogen throughout the Earth's systems and spheres
c)
The movement of phosphorus throughout the Earth's systems and spheres
d)
The movement of water throughout the Earth's systems and spheres
7.
How do humans alter the water cycle?
a)
By adding large amounts of carbon to the atmosphere
b)
By clearing forests and not replacing them
c)
By withdrawing freshwater at rates faster than natural processes can replace it
d)
By mining large amounts of phosphate to make fertilizer
8.
What is the primary source of nitrogen in the atmosphere?
a)
Burning of fossil fuels
b)
Photosynthesis
c)
Lightning and specialized bacteria
d)
Respiration
9.
What is the difference between a decomposer and a detrivore
a)
While detritivores break down organic materials, decomposers- like vultures, eat dead organisms and wastes
b)
Detritivores are a type of decomposer in which they eat and break down dead organic materials
c)
While decomposers break down dead, organic materials, detritivores—like millipedes, earthworms, and termites—eat dead organisms and wastes
d)
Decomposers are a type of detritivore and they eat freshly dead organisms to help break down and decompose dead things
10.
True or False: The high pressure from the weight of overlying sediments and heat released during the decomposition of dead matter formed coal, oil and natural gas (fossil fuels)
a)
True
b)
False
11.
What is a positive feedback loop?
a)
A loop that amplifies or increases the output
b)
A loop that decreases the output
c)
A loop that maintains a constant output
d)
A loop that has no effect on the output
12.
Which of the following is an example of a positive feedback loop?
a)
Body temperature regulation
b)
Blood sugar regulation
c)
Albedo and Polar Ice
d)
Thirst regulation
13.
Which of the following is an example of a negative feedback loop?
a)
Body temperature regulation
b)
Blood clotting
c)
Childbirth contractions
d)
Thirst regulation
14.
In a positive feedback loop, the output ________ the initial stimulus.
a)
Regulates
b)
Enhances
c)
Remains constant
d)
Has no effect on
15.
In a negative feedback loop, the output ________ the initial stimulus.
a)
Regulates
b)
Enhances
c)
Remains constant
d)
Has no effect on
16.
Tell me how the greenhouse effect benefits, as well as can harm the earth.
You will need to include the following:
-How the greenhouse effect works
-How it can harm the earth
-How it benefits life on earth
4 lines
100 %
