Physics
Grade-7
Easy
Question
Direction : Identify the energy in each of the case.
Petrol pump
- Thermal
- Chemical
- Mechanical
- Electrical
Hint:
Chemical
The correct answer is: Chemical
Chemical energy is energy stored in the bonds of atoms and molecules. Batteries, biomass, petroleum, natural gas and coal are examples of chemical energy. Chemical energy is converted to thermal energy when people burn wood in a fireplace or burn gasoline in a car's engine.
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Direction : Identify the energy in each of the case.
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Direction : Identify the energy in each of the case.
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PhysicsGrade-7
Physics
Which type of energy is produced when the handle of a pencil sharpener turns?
¶Potential and kinetic energy sources from which mechanical energy is generated by converting them into power. Turbines powered by steam, water, wind, gas, or liquid fuels are a few examples of this.
¶Before being employed as power, machines were frequently used to convert various energy sources. We can use mechanical energy any way we want or need it to function once it has been altered in a specific way. E.g., A tool that works by using mechanical energy is a hammer. A hammer's ability to exert force on a nail to move it is made possible by the mechanical energy it possesses. The hammer can function on the nail because it possesses mechanical energy (kinetic energy). Work-enabling energy is known as mechanical energy.
¶
¶Before being employed as power, machines were frequently used to convert various energy sources. We can use mechanical energy any way we want or need it to function once it has been altered in a specific way. E.g., A tool that works by using mechanical energy is a hammer. A hammer's ability to exert force on a nail to move it is made possible by the mechanical energy it possesses. The hammer can function on the nail because it possesses mechanical energy (kinetic energy). Work-enabling energy is known as mechanical energy.
¶
Which type of energy is produced when the handle of a pencil sharpener turns?
PhysicsGrade-7
¶Potential and kinetic energy sources from which mechanical energy is generated by converting them into power. Turbines powered by steam, water, wind, gas, or liquid fuels are a few examples of this.
¶Before being employed as power, machines were frequently used to convert various energy sources. We can use mechanical energy any way we want or need it to function once it has been altered in a specific way. E.g., A tool that works by using mechanical energy is a hammer. A hammer's ability to exert force on a nail to move it is made possible by the mechanical energy it possesses. The hammer can function on the nail because it possesses mechanical energy (kinetic energy). Work-enabling energy is known as mechanical energy.
¶
¶Before being employed as power, machines were frequently used to convert various energy sources. We can use mechanical energy any way we want or need it to function once it has been altered in a specific way. E.g., A tool that works by using mechanical energy is a hammer. A hammer's ability to exert force on a nail to move it is made possible by the mechanical energy it possesses. The hammer can function on the nail because it possesses mechanical energy (kinetic energy). Work-enabling energy is known as mechanical energy.
¶
Physics
Heat is another name for
Heat is another name for
PhysicsGrade-7
Physics
The vibrating diaphragm of a drum emits energy in the form of _____.
The vibrating diaphragm of a drum emits energy in the form of _____.
PhysicsGrade-7
Physics
The energy obtained from electric cells and batteries as a result of a chemical reaction is called ______.
The energy obtained from electric cells and batteries as a result of a chemical reaction is called ______.
PhysicsGrade-7
Physics
The energy coming from the Sun for the last billion years is the result of a
The energy coming from the Sun for the last billion years is the result of a
PhysicsGrade-7
Physics
The energy released in the form of nuclear radiation, in addition to the heat and light during nuclear reactions, is known as
The energy released in the form of nuclear radiation, in addition to the heat and light during nuclear reactions, is known as
PhysicsGrade-7
Physics
A moving car possesses
A moving car possesses
PhysicsGrade-7
Physics
Vibrations of electrically charged particles produce ______ energy.
Vibrations of electrically charged particles produce ______ energy.
PhysicsGrade-7
Physics
Vibrations of an object cause ____ energy.
Vibrations of an object cause ____ energy.
PhysicsGrade-7
Physics
______ energy is the energy of moving electrons.
______ energy is the energy of moving electrons.
PhysicsGrade-7
Physics
________ energy is abundant in molecules with a high number of atom-to-atom bonds.
________ energy is abundant in molecules with a high number of atom-to-atom bonds.
PhysicsGrade-7
Physics
Higher temperatures cause particles to move quicker, resulting in greater ____.
Higher temperatures cause particles to move quicker, resulting in greater ____.
PhysicsGrade-7
Physics
Would it be easier to move a box of the same mass up a ramp that was long and gradual or short and steep?
Would it be easier to move a box of the same mass up a ramp that was long and gradual or short and steep?
PhysicsGrade-7
Physics
How much energy is produced when 350 N of force is used to move a car to a distance of 5 m?
How much energy is produced when 350 N of force is used to move a car to a distance of 5 m?
PhysicsGrade-7
