Podcast
Questions and Answers
The two main sources of renewable energy are the ______ and Earth.
The two main sources of renewable energy are the ______ and Earth.
Sun
Solar energy is produced through a process called ______.
Solar energy is produced through a process called ______.
nuclear fusion
Humans can harness energy from ______, moving water, and plant materials.
Humans can harness energy from ______, moving water, and plant materials.
wind
Energy from within Earth is primarily generated through ______.
Energy from within Earth is primarily generated through ______.
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Trees are considered a renewable resource, but they can become ______ if not managed properly.
Trees are considered a renewable resource, but they can become ______ if not managed properly.
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If this process continues, eventually these forests will no longer be considered ______ resources.
If this process continues, eventually these forests will no longer be considered ______ resources.
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Humans use energy resources to generate ______ and other forms of energy.
Humans use energy resources to generate ______ and other forms of energy.
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A community uses this reservoir for ______.
A community uses this reservoir for ______.
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The heat produced from Earth's internal energy sources radiates toward the Earth's ______.
The heat produced from Earth's internal energy sources radiates toward the Earth's ______.
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Solar energy fuels plant ______, which is essential for the food chain.
Solar energy fuels plant ______, which is essential for the food chain.
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Wind energy is harnessed by machines called ______.
Wind energy is harnessed by machines called ______.
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Electricity is generated when moving air turns ______ blades that drive an electric generator.
Electricity is generated when moving air turns ______ blades that drive an electric generator.
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Clusters of wind turbines are called ______.
Clusters of wind turbines are called ______.
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Hydroelectric energy is renewable because the water cycle is driven by the ______.
Hydroelectric energy is renewable because the water cycle is driven by the ______.
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Water that evaporates from oceans and lakes falls on higher elevations and flows downhill in ______.
Water that evaporates from oceans and lakes falls on higher elevations and flows downhill in ______.
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Electrical energy produced by moving water is called ______ energy.
Electrical energy produced by moving water is called ______ energy.
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Windmills have been used for centuries to grind grain and pump surface water for ______.
Windmills have been used for centuries to grind grain and pump surface water for ______.
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Wind farms are a form of ______ energy because they do not generate air pollution as they generate electricity.
Wind farms are a form of ______ energy because they do not generate air pollution as they generate electricity.
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Organic matter that contains stored energy is called _____.
Organic matter that contains stored energy is called _____.
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A resource that humans can use to produce energy is a(n) _____.
A resource that humans can use to produce energy is a(n) _____.
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_____ is an energy resource harnessed from flowing water.
_____ is an energy resource harnessed from flowing water.
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Renewable energy resources can be replaced, but we still need to conserve them to prevent _____.
Renewable energy resources can be replaced, but we still need to conserve them to prevent _____.
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The source of energy that powers wind and flowing water is _____ energy from the sun.
The source of energy that powers wind and flowing water is _____ energy from the sun.
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Biomass is organic matter from plants and from animal ______ that contains chemical energy.
Biomass is organic matter from plants and from animal ______ that contains chemical energy.
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Biomass can be burned to release ______.
Biomass can be burned to release ______.
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Some types of biomass renew more ______ than others.
Some types of biomass renew more ______ than others.
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Ethanol is a type of ______ produced from biomass material.
Ethanol is a type of ______ produced from biomass material.
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Over 1,000 L of ethanol can be made from 1 acre of ______.
Over 1,000 L of ethanol can be made from 1 acre of ______.
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Geothermal energy is produced by heat from the Earth's ______.
Geothermal energy is produced by heat from the Earth's ______.
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Geothermal energy can be used to warm and cool ______.
Geothermal energy can be used to warm and cool ______.
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Water pumped through pipes absorbs heat from the ______.
Water pumped through pipes absorbs heat from the ______.
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Hot groundwater can be pumped in and used for ______.
Hot groundwater can be pumped in and used for ______.
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Biomass produces ______ when it burns, similar to fossil fuels.
Biomass produces ______ when it burns, similar to fossil fuels.
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Hydroelectric energy is a good source of energy only in locations where there are large, reliable amounts of ______.
Hydroelectric energy is a good source of energy only in locations where there are large, reliable amounts of ______.
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Hydroelectric dams and their technology are ______ to build.
Hydroelectric dams and their technology are ______ to build.
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Special fish ______ must be built to allow fish to swim around the dam.
Special fish ______ must be built to allow fish to swim around the dam.
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Solar energy is the energy received by Earth from the sun in the form of ______.
Solar energy is the energy received by Earth from the sun in the form of ______.
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Solar energy can be used to warm buildings directly or can be converted into ______ by solar cells.
Solar energy can be used to warm buildings directly or can be converted into ______ by solar cells.
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Liquids warmed by the sun can be used to warm water and ______.
Liquids warmed by the sun can be used to warm water and ______.
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Solar collectors can also be used to generate ______.
Solar collectors can also be used to generate ______.
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Electricity can also be generated when sunlight is absorbed by a ______ cell.
Electricity can also be generated when sunlight is absorbed by a ______ cell.
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Plants absorb light energy from the sun and convert it to ______ energy through photosynthesis.
Plants absorb light energy from the sun and convert it to ______ energy through photosynthesis.
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The only pollution generated by solar heating systems comes from the manufacture and ______ of their equipment.
The only pollution generated by solar heating systems comes from the manufacture and ______ of their equipment.
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Study Notes
Renewable Energy Resources
- Main sources: Sun and Earth.
- Sun's energy: Nuclear fusion produces light and heat, driving wind, ocean currents, and plant growth.
- Earth's energy: Nuclear fission of radioactive elements and energy from Earth's formation generate heat.
Human Use of Renewable Energy Resources
- Wind energy: Harnessing wind's kinetic energy via wind turbines to generate electricity. Wind farms are clusters of wind turbines. Disadvantages include location limitations, high costs, and bird hazards.
- Hydroelectric energy: Utilizing flowing water's kinetic energy to generate electricity. Dams are used to create hydroelectric power. Disadvantages include high construction costs and disruption to fish migration.
- Solar energy: Direct heating of buildings and conversion to electricity via solar cells (photovoltaic cells). Advantages include reduced pollution, but disadvantages include space requirements and cost.
- Biomass energy: Burning organic matter (plants, animal waste) for heat or fuel. Ethanol production from biomass is a significant use. Disadvantages include pollution and slower renewal rates for some sources.
- Geothermal energy: Using Earth's internal heat for heating and electricity generation. Disadvantages include pollution from technology production and high maintenance costs.
Renewable vs. Nonrenewable Resources
- Renewable resources can be replenished quickly; Nonrenewable resources are used faster than they can be replaced.
- Renewable resources can become nonrenewable if usage exceeds replenishment rates. Example: deforestation.
Energy Production Differences
- The sun produces energy through nuclear fusion (combining atoms); Earth's interior produces energy through nuclear fission (splitting atoms) and residual heat from planet formation.
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Description
Test your knowledge on renewable energy sources such as solar, wind, and hydroelectric power. Explore the methods of harnessing these energies, their advantages, and disadvantages. This quiz will help you understand the impact of renewable resources on the environment and energy needs.
