Questions & Answers
Browse all 20 questions from the
Renewable Energy Explorer study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which part of a solar panel directly converts sunlight into electricity?
-
A
The frame
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B
The glass cover
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C
The photovoltaic cells
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D
The mounting brackets
2
What type of renewable energy harnesses the heat from within the Earth?
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A
Wind energy
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B
Geothermal energy
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C
Tidal energy
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D
Solar thermal energy
3
The largest portion of electricity generated from renewable sources globally comes from which energy type?
-
A
Wind power
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B
Solar power
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C
Hydropower
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D
Biomass energy
4
What is the main principle behind how a wind turbine generates electricity?
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A
Sunlight hitting blades
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B
Water flowing through a generator
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C
Wind turning blades connected to a generator
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D
Earth's heat creating steam
5
Which of these is a common source for generating biogas, a type of renewable energy?
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A
Volcanic eruptions
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B
Decomposing organic matter (like waste)
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C
Lightning strikes
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D
Ocean waves
6
What is the primary role of a 'photovoltaic' cell in solar energy systems?
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A
To store sunlight
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B
To create heat from sunlight
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C
To convert light directly into electrical energy
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D
To reflect sunlight
7
Which renewable energy source relies on the gravitational pull of the Moon and the Sun?
-
A
Geothermal energy
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B
Biomass energy
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C
Tidal energy
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D
Solar energy
8
Large scale solar power plants that use mirrors to concentrate sunlight are often called:
-
A
Solar farms
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B
Photovoltaic arrays
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C
Concentrated Solar Power (CSP) plants
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D
Solar panels
9
Why are wind turbines often located in open, elevated areas or offshore?
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A
To avoid shadows from trees
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B
To get more sunlight
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C
To capture stronger and more consistent winds
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D
To be closer to cities
10
In a hydroelectric power plant, what causes the turbines to spin and generate electricity?
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A
Steam from underground
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B
The flow of water
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C
Strong winds
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D
Burning biofuels
11
What is a key advantage of geothermal energy compared to solar or wind energy?
-
A
It is always available, day and night
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B
It is the cheapest to install
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C
It only works in hot deserts
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D
It requires no water
12
What is the process where plants are grown specifically to be used for energy production?
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A
Photosynthesis
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B
Bioenergy farming
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C
Recycling
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D
Composting
13
What are the primary 'fuel' sources for tidal energy?
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A
Sunlight and heat
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B
Wind and rain
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C
The movement of ocean water due to tides
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D
Burning wood
14
What is the most common material used to make the blades of large wind turbines?
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A
Steel
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B
Concrete
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C
Wood
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D
Fiberglass or composite materials
15
Which type of renewable energy involves capturing the heat released from the Earth's core?
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A
Ocean thermal energy conversion
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B
Biomass energy
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C
Geothermal energy
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D
Solar thermal energy
16
What is a disadvantage of relying solely on solar power?
-
A
It produces too much noise
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B
It only works when the sun is shining
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C
It releases harmful gases
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D
It requires a lot of wind
17
What is the main benefit of using renewable energy sources for electricity generation?
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A
They are more expensive to build
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B
They produce fewer greenhouse gas emissions
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C
They require more land
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D
They are only available at night
18
What is a 'dam' most commonly associated with in terms of renewable energy generation?
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A
Wind turbines
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B
Solar panels
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C
Geothermal power plants
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D
Hydropower
19
Which renewable energy source directly utilizes the kinetic energy of moving air?
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A
Solar energy
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B
Hydropower
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C
Wind energy
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D
Geothermal energy
20
What allows solar panels to generate electricity from sunlight?
-
A
Magnets within the panel
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B
Special materials that release electrons when light hits them
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C
Tiny windmills on the surface
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D
Water stored inside
