Particle Model of Matter
General
Random
Energy Transfer
Human Uses of Energy
100
Draw on the board what particles look like in a gas, solid and liquid
Gas = spread out and moving in all directions
Liquids = disorganized, farther apart then solids but much closer than gasses, flowing over each other
Solids = Closely packed together and organized
100
What did Anders Celsius base his thermometer on which created the Celsius system?
The properties of water
100
Which civilization built the Pyramids of Giza
Egyptian
100
What are the three main ways to transfer energy
conduction, convection, and radiation
100
What is the difference between renewable and non-renewable energy sources? Give an example of each.
Renewable can be replaced non-renewable cannot
renewable - wood, solar, wind etc
non-renewable - oil, coal, nuclear etc
200
What does heating a material do to the particles?
Increases their movement and spacing
200
What temperature is absolute zero and what does it represent?
0 Kelvin or -273.15 Celsius
Temperature where there is zero particle movement
200
What planet is called the red planet?
Mars
200
What is a material called if it transfer energy easily vs if it transfer very little energy?
Conductor and Insulator
200
Solar panels are an example of what kind of solar heating
active
300
What does a low specific heat capacity mean?
That the material transfers thermal energy quickly (either absorbing or giving away)
300
What happens to a solids shape and volume as it becomes heated
It's volume increases shape stays the same (until it hits fusion)
300
Can hippos swim?
No they run on the bottom of the water bed
300
What phase(s) must a material be in to form a convection current?
Liquid or Gas
300
What is a local heating system and what is an example?
A heating system that heats only one room. I.e. fireplace or space heater
400
If Mr. Murphy has two mugs of hot chocolate with a temperature of 710c but mug A is 500ml while mug B is 750ml is there any different in the thermal energy of the two mugs? If so which one has more?
Yes there is mug B has more thermal energy
400
What is the difference between thermal energy and temperature?
Thermal Energy= the total energy of all of the particles in a material or object
Temperature indicates the average speed of particle motion (kinetic energy) in a substance. Gauges how hot or cold matter is.
400
What is the only bird that can fly backwards?
Hummingbirds
400
In a lava lamp ____________ is demonstrated when the wax rises. This occurs because the wax becomes _________ dense as the particles are heated.
Convection, less
400
Mr. Murphy just installed some solar panels on his house but is confused how the energy goes from the sun to the solar panel. Explain it using what you have learned.
The sun radiates energy down to Earth and the solar panels collects it and transfers it into a useable form of energy
500
What are all the phase changes that can occur?
solid - liquid
solid - gas
liquid - solid
liquid - gas
gas - liquid
gas - solid
4 gets half points
5 gets full points
6 gets 1.5x points
500
Who created the first thermometer?
Galileo
500
Who is the most streamed Spotify artist this month?
Bruno Mars
500
What are the 5 things energy transfers have in common?
1. Require energy source
2. Direction of energy transfer is always high to low
3. Energy does not have to keep the same form it can transform
4. All systems have waste heat
5. Control device can start or stop the transfer
500
How doe shaving a properly insulated house reduce energy use?
Mr. Murphy is the judge