Energy Types
Energy Transformations
Heat and Temperature
Heat Transfer
Mystery Flavor!
100
The type of energy stored in fuel, food, batteries, etc
Chemical
100
A car comes to a stop. All of its kinetic energy is transformed into?
Thermal and sound (From friction from the brakes)
100
The direction of heat flow is always ____ to ____
hot to cold
100
When you step onto hot asphalt barefoot in the summer and feel your feet burn, heat moves directly from the ground to your feet through this process.
Conduction
100
An object that does not allow heat to transfer easily: examples (cloth, rubber, plastic, styrofoam)
Insulator
200
The energy of moving objects
Kinetic
200
A flashlight is turned on. Give the energy transformations from the battery all the way to the beam of light
Chemical -> Electrical -> Light + Thermal
200
The point at which two objects at different temperatures reach the same temperature. This is when heat stops flowing
Equilibrium
200
Boiling water in a pot creates a churning motion because warm water rises while cooler water sinks, forming these circulating currents.
Convection
200
An object that does allow heat to transfer easily (examples: Metals)
Conductor
300
Energy that is a result of mass and height above the earth
Gravitational Potential Energy
300
The law of conservation of energy says this:
Energy cannot be created or destroyed, it can only change forms
300
Thermal energy is different from temperature in that we consider both the speed of particles in the object and the object's ____
MASS (remember the iceberg!)
300
A lizard rests under a heat lamp, it gets its thermal energy from what type of heat transfer
Radiation
300
A measure of how tightly packed together particles are in an object. Heated objects become less ___ and cooled objects become more ____
Density
400
Most Kinetic Energy?
3
400
Pulling back an arrow on a bowstring stores energy in the bent bow; when you release the string, that stored form changes into kinetic energy. This specific type of stored energy in stretched materials is called this.
Elastic Potential Energy
400
Which state of matter has the most thermal energy?
Gas
400
the only form of heat transfer that does not require one of these to travel through, meaning it works even in a complete vacuum.
Radiation
400
Plants use sunlight to make food during photosynthesis, transforming radiant light energy into this type of stored energy.
Chemical energy
500
Most potential?
1
500
A bowling ball rolls down the lane. Give the energy transformations
Kinetic -> Thermal and Sound (Pin impact)
500
The name of the theoretical temperature in which the particles of an object stop moving completely
Absolute Zero
500
These diagrams are a good example of which kind of heat transfer?
Convection
500
According to the First Law of Thermodynamics, when energy changes from one form to another, some energy is always "lost" to the surrounding environment in this form
Thermal!