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Scientific Method and Earth as a System Flashcards | StudBud
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Scientific Method and Earth as a System
Scientific Method and Earth as a System
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A #geophysical #science quiz on the #scientificmethod and #earthasasystem.
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Questions
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Answers
1
A closed system is a system in which the only thing exchanged with the surroundings is
water
matter
energy
mass
2
How does the transfer of energy throughout an ecosystem begin on the Earth?
Humans create pollution.
Producers eat consumers.
The energy of the Earth is depleted.
Plants capture solar energy through photosynthesis.
3
How do animals get the Nitrogen that they require?
By eating plants.
By eating denitrifying bacteria.
Through decomposers.
Through respiration of nitrogen.
4
Which of the following is NOT considered to be an open system?
Nitrogen Cycle
The Earth
Water Cycle
Atmosphere
5
How do plants get the nitrogen that they need?
plants decompose.
plant roots take up nitrate from the soil.
N2 is freely absorbed by plants.
plants take in nitrogen through respiration.
6
The component of an experiment that scientists measure as a result of the independent variable.
Dependent Variable
Control
Independent Variable
7
Which of the following are nitrogen fixers?
Lightning and bacteria
Denitrification
All of the above.
Ammonification
8
The ratio of Nitrogen to Oxygen in the Earth's atmosphere is ...
78% N and 21% O
33% N and 67% O
67% N and 33% O
20% N and 80% O
9
Plants are consumers of CO
2
.
True
False
10
The component of an experiment that scientists alter to evaluate the results.
Control
Independent Variable
Dependent Variable
11
Which of the following is NOT part of a scientific evaluation?
Independent Variable
Control
Audience
Dependent Variable
12
Animals are consumers of CO
2
.
True
False
13
Which of the following examples does NOT demonstrate how one sphere can affect another?
volcanic eruptions can add carbon dioxide to the air.
animals decomposing will add nitrogen to the soil.
earthquakes can cause buildings to fall.
Rivers flow into lakes.
14
All of the following are considered to be carbon sinks/reservoirs except ...
Active volcanoes
The Atmosphere.
The Ocean
Marine shells
15
Carbon gets into the soil via ...
nitrification
evaporation
denitrification
plant and animal decay.
16
All carbon in existence is continually recycled through the carbon cycle.
True
False
17
The component of an experiment that scientists attempt to keep consistent between trials.
Dependent Variable
Control
Independent Variable
18
Which of the following does not relate to the 2nd Law of Thermodynamics?
Solar energy is captured and converted by plants.
All solar energy from the Sun is converted to other forms.
Some solar energy leaves the Earth and some stays.
All energy on the Earth is destroyed.
19
A closed system exchanges what with the environment around it?
Mass
Energy
Oxygen
Matter
20
The process by which bacteria or lightning can change N
2
gas into a form usable by plants is...
decomposers
denitrification
nitrogen fixation
assimilation
21
Respiration occurs when plants and animals consume O
2
and release CO
2
.
True
False
22
Which of the following statements is true about the geosphere's effect on the atmosphere?
Tornado activity can add harmful substances to the air.
Humans driving cars add harmful substances to the air.
Volcanic eruptions can add harmful substances to the air.
Plants decomposing will add harmful substances to the air.
23
A jar is left boiling on the stove. The jar is considered to be ...
Open system
biospheric system
Closed system
geospheric system
