2021-22 EVS CH FORCE WORK AND ENERGY (NOTEBOOK AND WORKBOOK EXERCISE)

 CH FORCE WORK AND ENERGY

 

NEW WORDS                                 H.W

Hydroelectricity

Turbines

Stationary

Sustainable

Buoyant

 

NEW TERMS

1.    turbine – a machine for producing continuous power in which a wheel or rotor, typically fitted with vanes, is made to revolve by a fast-moving flow of water, steam, gas, air or other fluid

2.    sustainable – able to be maintained at a certain level or rate

Answer the following questions in about 3 to 5 sentences.

a.   What is meant by solar energy?

ANS. The energy obtained from the sun’s rays is called Solar energy.

It is a renewable and eco-friendly source of energy.

This energy is utilised in solar cookers and solar water heaters to produce heat.

Solar power plants are also set up at many places to meet the demand for sustainable development and green energy.

b.   When is sound energy produced?

ANS. When an object is set into vibration sound energy is produced.

Sound energy needs a medium to travel such as air, water, metal, or even wood.

 

HOTS PLEASE WRITE ANSWER ON YOUR OWN

The sun is continuously releasing heat energy. What would be the energy transformations that take place?

ANS.

 

WORKBOOK EXERCISE- PLEASE CLICK THE LINK BELOW

WORKBOOK EXERCISE

 

 

 

 

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