Heating and Cooling Curves
What happens when you go from solid to liquid?
Melting.
What is the energy transformation when you plug in a lamp and the light bulb turns on?
Electrical to Light
What is the difference between potential and Kinetic energy?
Potential energy is the energy stored up inside an object and Kinetic energy is the use of that stored up energy.
What are the 3 methods of heat transfer?
Conduction, convection, and radiation
The lower the specific heat capacity the ____ the temperature change.
Quicker
What happens when gas goes from gas to liquid?
Condensation.
What does the Law of Conservation of Energy state?
That energy cannot be created or destroyed, only transformed.
What does Kinetic and potential energy depend on?
KE= Speed and mass.
PE= Mass and position
In what direction does heat flow?
From hot to cold
Would an insulator have a high or low heat capacity?
High
When you heat something up, does the kinetic energy of the object increase or decrease?
Increase.
What is the energy transformation within a house that uses solar power?
Nuclear to electrical
Name at least three types of potential and kinetic energy.
Kinetic - Mechanical, Sound, Light, Thermal, Electric
Potential - Chemical, Nuclear, Elastic, Gravitational
What is thermal equilibrium?
When heat travels from the warmer to cooler object until they are both the same temperature.
How would you describe the temperature change in a low specific heat capacity object?
A quick temperature change.
To get from liquid to gas, what would the water have to go through?
Vaporation.
What is the energy transformation when a plant goes through photosynthesis?
Nuclear to chemical to potential
What is the potential energy of a 5 kg plant that is 2 m high?
PE= mgh
100 J
What is temperature?
The average measurement of Kinetic energy of particles inside an object.
What is specific heat capacity?
The amount of energy required to raise the temperature of 1 gram of a substance by 1 degrees Celsius.
Determine whether a heating and cooling curve is endothermic or exothermic.
Heating curve = Endothermic (to gain or absorb heat).
Cooling curve = Exothermic ( to lose or release heat).
What is the energy transformation within a light bulb that gets power from a wind turbine?
Kinetic to mechanical to electrical to light
What is the Kinetic energy of a 220 kg car traveling at a speed of 80 m/s?
(KE= 1/2MV^2)
176,000 J
What is the difference between thermal energy and heat?
Thermal energy is the internalIDKKKKKK
You want to make an insulated water bottle. Would you use artificial wood with a specific heat capacity of 1.264, or the cork with a specific heat capacity of 3.000?
The cork because the heat capacity is higher.