Chemical and Mechanical

Chemical and Mechanical

Science 5 Quarter 3

​Mechanical Energy

Mechanical energy is produced by a moving object like engines, gears, locomotives and other mechanical devices. Machines possess mechanical energy.

Example is the sewing machine which works by stepping on the foot pedal.

Mechanical energy is very important. It makes our work easier, faster and help make things move.

Push cart enables us to carry and transport heavy things. It can also generate electricity like water turbine of the Maria Christina Falls in Iligan City.

Multiple Choice

Which statement best defines Mechanical Energy?

• Energy produced by a machine or moving part.

• Energy that is produced by an electrical current in a circuit.

• Energy from the sun.

• Energy that travels in waves due to vibrations.

Multiple Choice

What has to be true about an object for it to have kinetic energy?

• it must be moving

• it must be elevated

• it must be experiencing a net force

• it must be accelerating

Multiple Choice

What energy do you produce riding your bike? __________

• Sound Energy
• Mechanical Energy
• Light Energy
• Electrical Energy

Multiple Choice

All of the following are examples demonstrating mechanical energy EXCEPT –

• an oven cooking food.
• a fan blowing out air. 
• a boy riding a bicycle.
• a girl writing with a pen.

Multiple Choice

What is potential energy?

• the energy an object has due to its position or condition
• the energy an object has due to its motions
• the energy an object has due to its chemical composition
• theh energy an object has due to its atomic structure

Multiple Choice

What is energy?

• The pivot point allowing a lever to move

• A push or a pull

• Measurement of weight

• The ability to move or allow something to move

Multiple Choice

What is an example of kinetic energy?

• Water moving down a waterfall

• A car parked in a driveway

• A baby waving its hands

• Both A and C

Multiple Choice

What is an example of potential energy?

• A book sitting on a shelf

• A car moving down the highway

• A person playing basketball

• Both B and C

Multiple Choice

If a toy car rolls along a sidewalk, that is level, what would cause it to lose its kinetic energy?

• Heat
• Friction
• Magnetism
• Temperature