Sources of electrical energy | ENIZAD | Live - Free Printable
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Step-by-step solution for: Sources of electrical energy | ENIZAD | Live
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Show Answer Key & Explanations
Step-by-step solution for: Sources of electrical energy | ENIZAD | Live
To solve the problem, we need to identify the sources of electrical energy for each of the objects listed in the image. Let's go through each one step by step:
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- Source of Electrical Energy: The television typically runs on electricity from a power outlet (mains electricity). This electricity is usually generated from power plants that use sources like coal, natural gas, nuclear energy, or renewable sources such as solar, wind, or hydroelectric power.
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- Source of Electrical Energy: Satellites primarily use solar panels to generate electricity. These solar panels convert sunlight into electrical energy to power the satellite's systems. Some satellites may also use batteries to store energy for periods when sunlight is not available.
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- Source of Electrical Energy: An alarm clock can run on either mains electricity or batteries. If it is plugged into a wall outlet, the source is mains electricity. If it uses batteries, the source is chemical energy stored in the batteries.
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- Source of Electrical Energy: A bicycle lamp can be powered by a dynamo attached to the wheel, which generates electricity as the wheel spins. Alternatively, some bicycle lamps use rechargeable batteries, with the source being the charging device (usually mains electricity).
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- Source of Electrical Energy: Buses are typically powered by an internal combustion engine (using diesel or gasoline) or an electric motor (in electric buses). The electrical systems within the bus (e.g., lights, air conditioning, entertainment systems) are powered by the vehicle's battery, which is charged by the engine or external charging stations in electric buses.
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- Source of Electrical Energy: A fish pond often has pumps and filters that require electricity to operate. This electricity comes from mains power, which is generated at power plants using various sources (coal, natural gas, renewables, etc.).
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- Source of Electrical Energy: A remote control typically uses batteries as its source of electrical energy. The batteries provide the necessary power for the remote to function.
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- Source of Electrical Energy: A calculator can be powered by either batteries or a USB connection to a computer or power source. If it uses batteries, the source is chemical energy. If it is connected via USB, the source is mains electricity.
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1. Television: Mains electricity
2. Satellites: Solar panels
3. Alarm Clock: Mains electricity or batteries
4. Bicycle Lamp: Dynamo (mechanical energy converted to electrical energy) or batteries
5. Bus: Mains electricity (for accessories) or vehicle battery (charged by the engine or external charging)
6. Fish Pond: Mains electricity
7. Remote: Batteries
8. Calculator: Batteries or USB (mains electricity)
Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
1. & \text{Mains electricity} \\
2. & \text{Solar panels} \\
3. & \text{Mains electricity or batteries} \\
4. & \text{Dynamo or batteries} \\
5. & \text{Mains electricity or vehicle battery} \\
6. & \text{Mains electricity} \\
7. & \text{Batteries} \\
8. & \text{Batteries or USB (mains electricity)}
\end{array}
}
\]
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1. Television
- Source of Electrical Energy: The television typically runs on electricity from a power outlet (mains electricity). This electricity is usually generated from power plants that use sources like coal, natural gas, nuclear energy, or renewable sources such as solar, wind, or hydroelectric power.
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2. Satellites
- Source of Electrical Energy: Satellites primarily use solar panels to generate electricity. These solar panels convert sunlight into electrical energy to power the satellite's systems. Some satellites may also use batteries to store energy for periods when sunlight is not available.
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3. Alarm Clock
- Source of Electrical Energy: An alarm clock can run on either mains electricity or batteries. If it is plugged into a wall outlet, the source is mains electricity. If it uses batteries, the source is chemical energy stored in the batteries.
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4. Bicycle Lamp
- Source of Electrical Energy: A bicycle lamp can be powered by a dynamo attached to the wheel, which generates electricity as the wheel spins. Alternatively, some bicycle lamps use rechargeable batteries, with the source being the charging device (usually mains electricity).
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5. Bus
- Source of Electrical Energy: Buses are typically powered by an internal combustion engine (using diesel or gasoline) or an electric motor (in electric buses). The electrical systems within the bus (e.g., lights, air conditioning, entertainment systems) are powered by the vehicle's battery, which is charged by the engine or external charging stations in electric buses.
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6. Fish Pond
- Source of Electrical Energy: A fish pond often has pumps and filters that require electricity to operate. This electricity comes from mains power, which is generated at power plants using various sources (coal, natural gas, renewables, etc.).
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7. Remote
- Source of Electrical Energy: A remote control typically uses batteries as its source of electrical energy. The batteries provide the necessary power for the remote to function.
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8. Calculator
- Source of Electrical Energy: A calculator can be powered by either batteries or a USB connection to a computer or power source. If it uses batteries, the source is chemical energy. If it is connected via USB, the source is mains electricity.
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Final Answer:
1. Television: Mains electricity
2. Satellites: Solar panels
3. Alarm Clock: Mains electricity or batteries
4. Bicycle Lamp: Dynamo (mechanical energy converted to electrical energy) or batteries
5. Bus: Mains electricity (for accessories) or vehicle battery (charged by the engine or external charging)
6. Fish Pond: Mains electricity
7. Remote: Batteries
8. Calculator: Batteries or USB (mains electricity)
Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
1. & \text{Mains electricity} \\
2. & \text{Solar panels} \\
3. & \text{Mains electricity or batteries} \\
4. & \text{Dynamo or batteries} \\
5. & \text{Mains electricity or vehicle battery} \\
6. & \text{Mains electricity} \\
7. & \text{Batteries} \\
8. & \text{Batteries or USB (mains electricity)}
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of electrical energy worksheet.
