warm up 1. are fossil fuels renewable or nonrenewable? why? 2. where do fossil fuels get their...
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Warm up
1. Are fossil fuels renewable or nonrenewable? Why?
2. Where do fossil fuels get their energy from?
3. What are some examples of fossil fuels?
Heat/Temperature
Temperature:
Measure of the AVERAGE KINETIC ENERGY of the particles
Depends upon KINETIC energy
How do we measure temperature?
3 Scales:FahrenheitCelsiusKelvin
What is absolute zero?
Thermal energy:
TOTAL energy of the PARTICLES in an object
TE
depends on TEMPERATURE AND AMOUNT of particles
SO…
Which has a higher temperature?
Which has more TE?
Why?
Explain the energy transfer shown below:
Transfer of THERMAL energy
TE always moves from higher-temperature to lower-temperature
Heating stops when the objects are the same temperature
Conduction
Transfer of TE when objects are touching
Radiation
Transfer of TE through matter or space as EM waves (ex: visible light, infrared, etc)
Where can we see examples of this?
Convection
Transfer of thermal energy by the movement of liquid or gas
How exactly does this work?
Where can we see examples of this?
Problems: Use your textbook, page 153, to answer
the following:
1. 24oC to _____ oF 2. 17oC to _____ oF 3. -4 oF to _____ oC 4. 98.6 oF to _____ oC