Two flasks hold colored water, one yellow and the other blue. Set the starting temperature of each flask, choose a type of material to connect the flasks, and see how quickly the flasks heat up or cool down. The flasks can be connected with a hollow pipe, allowing the water in the flasks to mix, or a solid chunk that transfers heat but prevents mixing.
Experiment: Experiment with all six solid chunks.
For each, click Fast forward and then, after about 500 seconds, Pause ( ). Record the temperature of each flask.
The used of a solid chunk inbetween two liquids will result in heat being transfered by
Connection: Solid Copper
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Connection: Solid Gold
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
A good heat conductor will have change in temperature.
Sort the items you tested above into the categories listed below.
Gold
Stone
Lead
Rubber
Glass
Copper
Great Heat Conductor (2)
Okay Heat Conductor (2)
Poor Heat Conductor (2)
What do good heat conductors (from our experiment at least) have in comon with each other?
Experiment: Experiment with all six hollow pipes.
For each, click Fast forward and then, after about 500 seconds, Pause ( ). Record the temperature of each flask.
The used of a hollow pipe inbetween two liquids will result in heat being transfered by
Connection: Hollow Copper
Hot in the Top Flask
Cold in the Bottom Flask
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Cold in the Top Flask
Hot in the Bottom Flask
Initial temp. (top flask): 5 oC
Initial temp. (bottom flask): 95 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Why is the transfer of heat differnet with the hollow pipe depending on if the hotter liquid is on the top vs it on the bottom?
Of the 3 things we tested, rank them form the quickest from of heat tranfer (at the top) to the slowes)
Convection (when hottest item is in the bottom)
Conduction
Convection (when the hottest item is on the top)
Use a powerful flashlight to pop a kernel of popcorn. A lens focuses light on the kernel. The temperature of the filament and the distance between the flashlight and lens can be changed. Several obstacles can be placed between the flashlight and the popcorn.
As you drag the Temperature (Kelvin) on the activity what do you notice?
The
We are going to compare Temperatures and see how long it takes to have the popcorn kernel pop
Distance to Lens: 60 cm
Obstacle: None
Temperature: 1,000 Kalvin
Obsticle: None
Distance: 60 cm
Time
Temperature: 1,800 Kalvin
Obsticle: None
Distance: 60 cm
Time
Temperature: 2,350 Kalvin
Obsticle: None
Distance: 60 cm
Time
Temperature: 2,900 Kalvin
Obsticle: None
Distance: 60 cm
Time
We are going to compare obstacles and see how long it takes to have the popcorn kernel pop
Temperature: 1,500 Kalvin
Distance to Lens: 60 cm
*There will be one answer that is "Never"
Temperature: 1,500 Kalvin
Obsticle: None
Distance to Lens: 60 cm
Time
Temperature: 1,500 Kalvin
Obsticle: Red Glass
Distance to Lens: 60 cm
Time
Temperature: 1,500 Kalvin
Obsticle: Green Glass
Distance to Lens: 60 cm
Time
Temperature: 1,500 Kalvin
Obsticle: Blue Glass
Distance to Lens: 60 cm
Time
We are going to compare distances and see how long it takes to have the popcorn kernel pop
Temperature: 1,500 Kalvin
Obstacle: None
Temperature: 1,500 Kalvin
Obsticle: None
Distance: 120 cm
Time
Temperature: 1,500 Kalvin
Obsticle: None
Distance: 100 cm
Time
Temperature: 1,500 Kalvin
Obsticle: None
Distance: 80 cm
Time
Temperature: 1,500 Kalvin
Obsticle: None
Distance: 60 cm
Time
Answer the 5 questions below the gizmo. Take a screenshot of your score and paste it below.
Connection: Solid Lead
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Connection: Solid Stone
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Connection: Solid Glass
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Connection: Solid Rubber
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Connection: Hollow Gold
Hot in the Top Flask
Cold in the Bottom Flask
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Cold in the Top Flask
Hot in the Bottom Flask
Initial temp. (top flask): 5 oC
Initial temp. (bottom flask): 95 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Connection: Hollow Lead
Hot in the Top Flask
Cold in the Bottom Flask
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Cold in the Top Flask
Hot in the Bottom Flask
Initial temp. (top flask): 5 oC
Initial temp. (bottom flask): 95 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Connection: Hollow Stone
Hot in the Top Flask
Cold in the Bottom Flask
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Cold in the Top Flask
Hot in the Bottom Flask
Initial temp. (top flask): 5 oC
Initial temp. (bottom flask): 95 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Connection: Hollow Glass
Hot in the Top Flask
Cold in the Bottom Flask
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Cold in the Top Flask
Hot in the Bottom Flask
Initial temp. (top flask): 5 oC
Initial temp. (bottom flask): 95 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Connection: Hollow Rubber
Hot in the Top Flask
Cold in the Bottom Flask
Initial temp. (top flask): 95 oC
Initial temp. (bottom flask): 5 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Cold in the Top Flask
Hot in the Bottom Flask
Initial temp. (top flask): 5 oC
Initial temp. (bottom flask): 95 oC
500 sec. temp. (top flask)
500 sec. temp. (bottom flask)
Temperature: 3,600 Kalvin
Obsticle: None
Distance: 60 cm
Time
How does temperature effect thermal energy tranfer through radiation?
The
Temperature: 1,500 Kalvin
Obsticle: Cardboard
Distance to Lens: 60 cm
Time
How do obsticles effect thermal energy tranfer through radiation?
The
Temperature: 1,500 Kalvin
Obsticle: None
Distance: 40 cm
Time
How does distance effect thermal energy tranfer through radiation?
The