Questions & Answers
Browse all 20 questions from the
Electrical Engineering in Nature study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which animal uses specialized organs called electrocytes to generate electric shocks for hunting and defense?
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A
Electric eel
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B
Platypus
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C
Fruit bat
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D
Red fox
2
How do sharks detect the weak bio-electric fields produced by the muscle contractions of their prey?
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A
Using sonar
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B
Through ampullae of Lorenzini
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C
By sensing air pressure
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D
Via thermal pits
3
Which phenomenon involves the movement of electrical charge between the atmosphere and the Earth's surface during a thunderstorm?
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A
Aurora Borealis
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B
Lightning
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C
Solar wind
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D
Tidal friction
4
What is the primary function of the electric organ discharge (EOD) in weakly electric fish?
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A
Generating heat
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B
Electrolocation and communication
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C
Digesting food
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D
Filtering water
5
In electrical engineering terms, what acts as a natural capacitor during the process of thunderstorm formation?
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A
The Earth's core
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B
A cloud
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C
The wind
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D
A tree
6
Which mammal uses electroreception to locate prey in muddy water while its eyes and ears are closed?
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A
Beaver
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B
Platypus
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C
Otter
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D
Hippopotamus
7
What is the unit of measure for electrical potential that is also used to describe the voltage generated by a nerve cell?
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A
Watt
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B
Volt
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C
Ampere
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D
Ohm
8
Which plant-based process converts light energy into chemical energy, creating a small electrical potential across thylakoid membranes?
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A
Transpiration
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B
Photosynthesis
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C
Respiration
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D
Pollination
9
What type of material, found in the shells of some marine organisms, is studied for its piezoelectric properties?
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A
Silica
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B
Calcite
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C
Chitin
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D
Cellulose
10
In the context of soil science, what property measures how well a soil conducts electrical current?
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A
Soil resistivity
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B
Soil elasticity
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C
Soil porosity
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D
Soil opacity
11
Which structure in the human body acts as a biological conductor for electrical impulses from the brain to the muscles?
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A
Capillary
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B
Nerve fiber
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C
Artery
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D
Ligament
12
What is the natural atmospheric electrical phenomenon where light glows on the tips of pointed objects like trees or ship masts?
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A
St. Elmo's Fire
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B
Sun dog
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C
Halo
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D
Corona discharge
13
Which gas, when ionized in the atmosphere during a lightning strike, produces the distinct scent of ozone?
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A
Nitrogen
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B
Oxygen
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C
Carbon dioxide
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D
Helium
14
What do engineers call the bio-electrical signal recording process used to measure heart activity?
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A
Electromyography
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B
Electrocardiography
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C
Electroencephalography
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D
Electrodermal activity
15
Which of the following is a natural source of electromagnetic interference (EMI) that can affect radio communications?
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A
Solar flares
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B
Tree leaves
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C
Still water
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D
Rocky soil
16
In a biological circuit, what serves as the electrolyte solution allowing ions to flow between cells?
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A
Bone marrow
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B
Extracellular fluid
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C
Dermis
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D
Adipose tissue
17
What do scientists call the tiny electrical currents measured on the skin that indicate autonomic nervous system activity?
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A
Galvanic skin response
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B
Thermal conductivity
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C
Static discharge
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D
Piezoelectric effect
18
Which element is commonly used in biological ion channels to facilitate the flow of current in nerve cells?
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A
Potassium
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B
Iron
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C
Gold
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D
Aluminum
19
How do some plants, such as the Venus flytrap, trigger their trap closure through electrical signaling?
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A
By detecting vibrations
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B
By measuring ion concentration changes
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C
By sensing heat
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D
By light intensity
20
What is the name for the natural electrical discharge from the Earth to the ionosphere in the upper atmosphere?
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A
Sprites
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B
Aurora
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C
Rainbow
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D
Fog
