Question

please fill up all the question

Answer 1

Answer:

physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed

Answer 2

$\huge\sf\color{navy}{Answer}\red{:-}$

1) what is energy? describe the types of energy with example?

Answer:-

==>Energy exists in many different forms. Examples of these are: light energy, heat energy, mechanical energy, gravitational energy, electrical energy, sound energy, chemical energy, nuclear or atomic energy and so on. Each form can be converted or changed into the other forms.

===>$\huge\sf\color{navy}{Example}\red{:-}$The different types of energy include thermal energy, radiant energy, chemical energy, nuclear energy, electrical energy, motion energy, sound energy, elastic energy and gravitational energy.

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2) write the law of energy. explain any four energy conversion with example?

Answer:-

==>$\huge\sf\color{navy}{Law of energy}\red{:-}$==>The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. ... The only way to use energy is to transform energy from one form to another.

==>Similarly, the law of conservation of energy states that the amount of energy is neither created nor destroyed. ... For example, when you roll a toy car down a ramp and it hits a wall, the energy is transferred from kinetic energy to potential energy.

$\huge\sf\color{navy}{Examples}\red{:-}$

•••Battery (electricity) (Chemical energy → Electrical energy) Fire (Chemical energy → Heat and Light) Electric lamp (Electrical energy → Heat and Light) Microphone (Sound → Electrical energy)

•••A swinging pirate ship ride at a theme park. Kinetic energy is transferred into gravitational potential energy.

•••A boat being accelerated by the force of the engine. The boat pushes through the water as chemical energy is transferred into kinetic energy.

•••Bringing water to the boil in an electric kettle.

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3) write the all three process of heat transfer with example?

Answer:-

••• Heat can be transferred in three ways: by conduction, by convection, and by radiation.

$\huge\sf\color{navy}{Examples}\red{:-}$

==> Conduction is the transfer of energy from one molecule to another by direct contact. ...

==>Convection is the movement of heat by a fluid such as water or air. ...

==>Radiation is the transfer of heat by electromagnetic waves.

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4) what is fossil fuel? why we need to be environmentally conscious while using fossil fuel?

Answer:-

==>$\huge\sf\color{navy}{ Fossil fuel}\red{:-}$

==>Fossil fuels are made from decomposing plants and animals. These fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy. Coal, oil, and natural gas are examples of fossil fuels. ... This material is heated in order to produce the thick oil that can be used to make gasoline.

we need to be environmentally conscious while using fossil fuel:-

==>Coal combustion produces a variety of air pollutants that harm human and environmental health, such as sulfur dioxide, nitrogen oxides, mercury, and particulate matter. Coal ash is another harmful coal waste product, which is difficult to recycle and can seep into waterways, polluting them.

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5) write any two uses of each energy. mechanical energy, thermal energy, sound energy, light

energy and wind energy?

Answer:-

$\huge\sf\color{navy}{1)Mechanical energy}\red{:-}$

$\huge\mathcal\orange{Two uses:-}$

==>Steam engines convert thermal energy into mechanical energy in a train. Your body converts chemical energy from nutrients to mechanical energy for movement.

==>A power drill converts electrical energy to mechanical energy when plugged in and used. Music converts sound energy to mechanical energy in your eardrum.

$\huge\sf\color{navy}{2)Thermal energy}\red{:-}$

$\huge\mathcal\orange{Two uses:-}$

==>For most energy systems such as a gasoline engine, thermal power is how fast fuel is converted into heat. These heat engines create this heat to achieve useful work.

==>Most commonly thermal power refers to the heat input to a boiler in a power plant in order to generate electricity.

$\huge\sf\color{navy}{3)sound energy}\red{:-}$

$\huge\mathcal\orange{Two uses:-}$

==>It helps us to communicate with others. By sound, we can understand the context of the words spoken.

==>Sound can help people to protect themselves from danger such as the sound or horn of the train and other vehicles warn people to give way etc. Sound is a medium of entertainment.

$\huge\sf\color{navy}{4)light energy}\red{:-}$

$\huge\mathcal\orange{Two uses:-}$

$\huge\mathcal\pink{5) wind energy:-}$

==>windsurfing.

==>land surfing.

$\huge\colorbox{cyan}{Thank you}$