MELTS
The ability to cause change or do work
Energy
Energy that you can see with your eyes
Light Energy
When using a ceiling fan the electrical energy is transferred into this energy.
Mechanical
A push or pull that causes an object to move, stop, or change direction.
Force
Devices that change the direction or magnitude of force with less effort applied. (it helps us perform work)
Simple Machines
Energy that is absorbed or delivered by electrons
Electrical Energy
Energy that lets you hear a guitar playing
Sound energy
Energy can be... a. created b. destroyed c. transferred
Transferred
When a force is used to move an object through a distance in the direction the force is applied.
Work
Imagine you had to lift a heavy box into the back of a truck. What could you use to make the job easier?
A inclined ramp and wheel and axel
( ramp with a dollie)
The transfer of heat energy from one object to another
Thermal Energy
Energy that causes the spray bottle to work
Mechanical Energy
When you turn on a T.V., the electrical energy is transferred into these forms of energies.
Light and Sound
Devices that change the direction or magnitude of force with less effort applied. (it helps us perform work)
Simple machines
Name an example of a lever, wheel and axel, and pulley
lever: scissors, seesaw
Wheel and Axel: wagon, car
Pulley: blinds, flag pole
Energy that travels in waves through the air or water and vibrates the eardrum
Sound Energy
This energy travels in a straight line.
Light Energy
How does solar panels convert energy?
Light to electrical energy
What is a force that acts in an opposite direction to a movement
Name one example
Friction
Example: A soccer ball being kicked in grass
Name an example of a wedge, screw, inclined plane:
wedge: axe, knife
Screw: drill, bolt
inclined plane: ramp, slide
What does MELTS stand for?
Mechanical
Electrical
Light
Thermal
Sound
Which energy can travel in empty space
Light energy
How does an Hydroelectric dam convert energy
Water moves ( mechanical) to create electricity (electrical energy)
How do swings require work to change their position? If you just sit there will the swing, go up and down?
Swings need a force to change positions. You need to push and pull in your legs to make the swing move. If you just sit there no movement or work will occur.
Name and describe all 6 types of simple machines
Wedge - An object that is thick at one edge tapered to a thin edge at the other.
Screw - An inclined plane wrapped in a spiral.
Inclined Plane - A flat surface or slope which one end higher than the other.
Lever - A bar balanced on a fulcrum that can help lift a heavy load.
Wheel and Axel - A wheel attached to a bar so that they rotate together, used to carry loads.
Pulley - A rope wrapped around a wheel to raise, lower, or move a load.