Form of Energy
The energy of heat, due to the movement of particles
Thermal Energy
What is kinetic energy?
Energy in motion
What is the law of energy conservation?
What are the three main types of heat transfer?
Conduction, convection, and radiatation
What happens to the movement of particles in an object when they get heated?
The particles move faster as objects are heated.
Energy that travels in electromagnetic waves
What is potential energy?
The energy of an object that is stored due to its position, shape, or condition of the object.
Describe the energy conversion that happens when you ride a bicycle up a hill.
Kinetic energy converts to potential energy
Heat transfer through direct contact
Heat travels from ________ objects to _________ objects.
Hot to cold
The energy in moving object or stored energy the due to an object's position
mechanical energy
At the highest point of the pendulum, which type of energy is the highest?
Potential Energy
What kind of energy conversion happens when you burn wood?
Chemical energy to radiant and thermal energy
What is convection?
Heat transfer through currents (heat rises, cold falls)
What is thermal equilibrium?
When the objects in a system reach the same temperature.
The energy from vibrations in matter
Sound Energy
At the lowest point of the pendulum, what type of energy is the highest?
Kinetic energy
When you switch on a flashlight, what energy conversions take place?
Chemical to electrical to radiant
What is radiation?
Heat transfer through electromagnetic waves (radiant energy)
What color absorbs the most light and heat? What colors reflects the most light and heat?
Absorbs the least: white
Energy stored in the bonds of molecules
Chemical Energy
potential to kinetic
Explain how the law of conservation of energy applies when a pendulum swings back and forth.
Before it is released it is at potential energy as it swings down, the potential energy converts to kinetic energy then on its way back up kinetic transforms to potential energy
How does a campfire show all types of heat transfer? ****DAILY DOUBLE****
Conduction: Heat is transferred from the flames to the objects they touch, like the logs or a pot resting on the fire.
Convection: The hot air created by the fire rises through smoke, and cooler air rushes in to take its place.
Radiation: You feel the warmth of the fire even if you're standing away from it because the heat is radiating outward in the form of light and infrared.
What is thermal expansion?
The increased speeds of atoms as objects are heated causes the atoms to spread further apart and will eventually change shape.