Energy and its sources

Work is said to be done when a ____________ applied to an object causes a __________ of the object.

• displacement

• force (push or pull)

• energy

• option 1 and 2

Which among the following are the types of energy?

• 
• 
• 
• All of the options are right

Which among the following are examples of potential energy? justify your answer.

• 
• 
• 
• Only option 1 and 2.

Chemical energy may be released during a ____________, often in the form of heat.

• Solar energy

• chemical reaction

• nuclear energy

• none of the options

radiation from the Sun capable of producing heat, causing chemical reactions, or generating electricity is called __________.

• chemical energy

• wind energy

• tidal energy

• solar energy

___________is power produced by the surge of ocean waters during the rise and fall of tides.

• wind energy

• solar energy

• Tidal energy

• hydroelectric energy

Muscles use the stored chemical energy which is derived from the food that we eat and convert that to heat and energy of motion which is called ____________.

• solar energy

• wind energy

• muscular energy

• chemical energy

_____________occurs when an object vibrates.

• light energy

• nuclear energy

• Sound energy

• heat energy

____________ is the potential energy associated with the gravitational field, which is released (converted into kinetic energy) when the objects fall towards each other.