Difference between revisions of "PhET/C2/The-Greenhouse-Effect/English-timed"

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|| 00:01
 
|| 00:01
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|| Welcome to this tutorial on '''Greenhouse Effect''', an  Interactive '''PhET simulation'''.  
+
|| Welcome to this tutorial on '''Greenhouse Effect''', an  interactive '''PhET simulation'''.  
  
 
|-  
 
|-  
 
|| 00:07
 
|| 00:07
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|| In this tutorial, we will Demonstrate '''Greenhouse Effect''', using Interactive '''PhET simulation'''.  
+
|| In this tutorial, we will demonstrate '''Greenhouse Effect''', using Interactive '''PhET simulation'''.  
  
 
|-  
 
|-  
 
|| 00:14
 
|| 00:14
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|| To follow this tutorial you should have knowledge of High School Science.  
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|| To follow this tutorial, you should have knowledge of high-School science.  
  
 
|-  
 
|-  
 
|| 00:20
 
|| 00:20
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|| Here I am using- Ubuntu Linux OS version 14.04  
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|| Here I am using- '''Ubuntu Linux OS''' version 14.04  
  
 
|-  
 
|-  
 
|| 00:26
 
|| 00:26
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||Java version 1.7.0  
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||'''Java''' version 1.7.0  
  
 
|-  
 
|-  
 
|| 00:30
 
|| 00:30
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||Firefox Web Browser version 53.02.2.  
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||'''Firefox Web Browser''' version 53.02.2.  
  
 
|-  
 
|-  
 
|| 00:36
 
|| 00:36
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|| Using this simulation students will learn,  
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|| Using this simulation, students will learn:  
 
1. Effect of greenhouse gases on atmospheric temperature.  
 
1. Effect of greenhouse gases on atmospheric temperature.  
  
 
|-  
 
|-  
 
||00:44
 
||00:44
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|| 2. Explore and compare the atmosphere of '''Ice age''' and '''Today'''.
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|| 2. Explore and compare the atmosphere of '''Ice age''' and today.
  
 
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|| 01:04
 
|| 01:04
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|| '''Greenhouse Effect'''  
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|| '''Greenhouse Effect''':
  
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It is a phenomenon in which, earth's atmosphere traps radiation emitted by sun.  
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It is a phenomenon in which earth's atmosphere traps radiation emitted by Sun.  
  
 
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||01:58
 
||01:58
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|| Use the following link to download the simulation.  
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|| Use the following '''link''' to download the '''simulation'''.  
 
    
 
    
 
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||02:08
 
||02:08
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|| I will open the simulation using the terminal.  
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|| I will open the simulation using the '''terminal'''.  
  
 
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||02:14
 
||02:14
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|| At the prompt type '''cd Downloads''' and press enter.  
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|| At the prompt, type: '''cd Downloads''' and press '''Enter'''.  
  
 
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||02:20
 
||02:20
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|| Then type, '''java space hyphen jar space greenhouse_en.jar''' and press enter.  
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|| Then type: '''java space hyphen jar space greenhouse_en.jar''' and press '''Enter'''.  
  
 
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|| 02:35
 
|| 02:35
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|| The simulation has 3 screens,
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|| The simulation has 3 screens:
  
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'''Greenhouse Effect'''  
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'''Greenhouse Effect''',
  
 
'''Glass Layers''' and  
 
'''Glass Layers''' and  
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||02:54
 
||02:54
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|| The radiated heat from Earth's surface is shown as red infrared photons.  
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|| The radiated heat from Earth's surface is shown as red '''infrared photons'''.  
  
 
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|| 03:00
 
|| 03:00
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|| On the right-hand side panel, we have options to explore the atmosphere.  
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|| On the right-hand side '''panel''', we have options to explore the atmosphere.  
  
 
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||03:06
 
||03:06
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|| By default '''Atmosphere during''' is set as '''Today'''.  
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|| By default, '''Atmosphere during''' is set as '''Today'''.  
  
 
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||03:23
 
||03:23
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|| '''Options''' panel has radio buttons to display temperature in, '''Fahrenheit''' or '''Celsius''' units.  
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|| '''Options''' panel has radio-buttons to display temperature in '''Fahrenheit''' or '''Celsius''' units.  
  
 
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|| 03:31
 
|| 03:31
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|| At the bottom of the screen there are buttons to '''Pause''' and '''Play''' simulation.  
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|| At the bottom of the screen, there are buttons to '''Pause''' and '''Play''' simulation.  
  
 
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||03:37
 
||03:37
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|| Drag the slider to change the speed of the animation from '''fast''' to '''slow'''.  
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|| Drag the '''slider''' to change the speed of the '''animation''' from '''fast''' to '''slow'''.  
  
 
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|| 03:44
 
|| 03:44
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|| Observe the temperature on the '''thermometer'''.  
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|| Observe the temperature on the thermometer.  
  
 
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||03:57
 
||03:57
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|| Then drag the '''Greenhouse Gas Concentration''' slider towards '''Lots''' .
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|| Then drag the '''Greenhouse Gas Concentration''' slider towards '''Lots'''. .
  
 
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|| 04:03
 
|| 04:03
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|| Observe the temperature on the '''thermometer'''.  
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|| Observe the temperature on the thermometer.  
  
 
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||04:23
 
||04:23
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|| Observe the temperature. Note that, '''Clouds''' will help the atmosphere, to retain heat.  
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|| Observe the temperature. Note that '''Clouds''' will help the atmosphere to retain heat.  
  
 
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||04:36
 
||04:36
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|| Click on '''1750''' radio button.  
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|| Click on '''1750''' radio-button.  
  
 
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|| 04:58
 
|| 04:58
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|| Click on '''Reset All''' button at the bottom of the screen to reset the simulation.  
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|| Click on '''Reset All''' button at the bottom of the '''screen''' to '''reset''' the simulation.  
  
 
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|| 05:08
 
|| 05:08
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|| Now let us explore other screens in this window.  
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|| Now, let us explore other screens in this window.  
  
 
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||05:46
 
||05:46
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|| Click on '''Atmospheric Gases''' radio buttons, one by one and check the vibrations.  
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|| Click on '''Atmospheric Gases''' radio buttons, one by one, and check the vibrations.  
  
 
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||06:04
 
||06:04
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|| Drag the sliders for the respective atoms.  
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|| Drag the '''slider'''s for the respective atoms.  
  
 
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|| 06:31
 
|| 06:31
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|| In this tutorial we have learnt, About the effect of greenhouse gases on atmospheric temperature.
+
|| In this tutorial, we have learnt about the effect of greenhouse gases on atmospheric temperature,
  
 
|-  
 
|-  
 
||06:38
 
||06:38
−
|| Compared the atmosphere of '''Ice age''' and '''Today'''.
+
|| compared the atmosphere of '''Ice age''' and '''Today''',
  
 
|-  
 
|-  
 
||06:43
 
||06:43
−
|| Effect of '''Glass panes''' and '''Clouds''' on atmospheric temperature.
+
|| effect of '''Glass panes''' and '''Clouds''' on atmospheric temperature,
  
 
|-  
 
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|| 06:48
 
|| 06:48
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|| Interaction of photons with atmospheric gases.
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|| interaction of photons with atmospheric gases,
  
 
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||06:52
 
||06:52
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|| Contribution of atmospheric gases to '''Greenhouse Effect'''.  
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|| contribution of atmospheric gases to '''Greenhouse Effect'''.  
  
 
|-  
 
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|| 06:57
 
|| 06:57
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|| As an assignment, Compare atmospheric temperature during 18<sup>th</sup> century and '''Ice age'''.  
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|| As an assignment, compare atmospheric temperature during 18<sup>th</sup> century and '''Ice age'''.  
 
   
 
   
 
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|| 07:22
 
|| 07:22
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|| The video at the following link summarizes the Spoken Tutorial project.  
+
|| The video at the following link summarizes the '''Spoken Tutorial''' project.  
−
 
+
 
Please download and watch it.  
 
Please download and watch it.  
  
 
|-  
 
|-  
 
|| 07:31
 
|| 07:31
−
|| The '''Spoken Tutorial Project''' team: conducts workshops using spoken tutorials and  
+
|| The '''Spoken Tutorial Project''' team conducts workshops using spoken tutorials and gives certificates on passing online tests.  
−
 
+
−
gives certificates on passing online tests.  
+
  
 
|-  
 
|-  
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|-  
 
|-  
 
||07:57
 
||07:57
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|| Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India.  
+
|| '''Spoken Tutorial''' Project is funded by '''NMEICT, MHRD,''' Government of India.  
−
 
+
 
More information on this mission is available at this link.  
 
More information on this mission is available at this link.  
  

Latest revision as of 12:36, 13 August 2018

Time Narration
00:01 Welcome to this tutorial on Greenhouse Effect, an interactive PhET simulation.
00:07 In this tutorial, we will demonstrate Greenhouse Effect, using Interactive PhET simulation.
00:14 To follow this tutorial, you should have knowledge of high-School science.
00:20 Here I am using- Ubuntu Linux OS version 14.04
00:26 Java version 1.7.0
00:30 Firefox Web Browser version 53.02.2.
00:36 Using this simulation, students will learn:

1. Effect of greenhouse gases on atmospheric temperature.

00:44 2. Explore and compare the atmosphere of Ice age and today.
00:49 3. Effect of Glass panes and Clouds on atmospheric temperature.
00:55 4. Interaction of photons with atmospheric gases.
00:59 5. Contribution of atmospheric gases to Greenhouse Effect.
01:04 Greenhouse Effect:

It is a phenomenon in which earth's atmosphere traps radiation emitted by Sun.

01:13 This effect is caused by gases in the atmosphere.
01:17 They retain the heat radiated back from earth's surface.
01:22 This slide shows greenhouse gases and their percentages.
01:27 This process is similar to what happens inside a Greenhouse.
01:32 In cold places, fruits and vegetables are grown in glass covered area called a Greenhouse.
01:40 In a Greenhouse, solar radiations pass through the transparent glass and heat up the soil.
01:47 Some of this heat is absorbed by the glass and some is reflected.
01:52 This mechanism keeps the energy of the sun trapped in the Greenhouse.
01:58 Use the following link to download the simulation.
02:02 I have already downloaded the Greenhouse Effect simulation to my Downloads folder.
02:08 I will open the simulation using the terminal.
02:12 Open the terminal.
02:14 At the prompt, type: cd Downloads and press Enter.
02:20 Then type: java space hyphen jar space greenhouse_en.jar and press Enter.
02:31 Greenhouse Effect simulation opens.
02:35 The simulation has 3 screens:

Greenhouse Effect,

Glass Layers and

Photon Absorption.

02:45 Greenhouse Effect screen shows Earth's atmosphere.
02:49 Light from Sun is depicted as yellow photons.
02:54 The radiated heat from Earth's surface is shown as red infrared photons.
03:00 On the right-hand side panel, we have options to explore the atmosphere.
03:06 By default, Atmosphere during is set as Today.
03:11 Observe the composition of greenhouse gases for Today's Atmosphere.
03:16 There is a thermometer to record the temperature in Kelvin and Fahrenheit scales.
03:23 Options panel has radio-buttons to display temperature in Fahrenheit or Celsius units.
03:31 At the bottom of the screen, there are buttons to Pause and Play simulation.
03:37 Drag the slider to change the speed of the animation from fast to slow.
03:44 Observe the temperature on the thermometer.
03:48 Click on Adjustable concentration button.
03:52 It will increase the concentration of greenhouse gases.
03:57 Then drag the Greenhouse Gas Concentration slider towards Lots. .
04:03 Observe the temperature on the thermometer.
04:07 As the concentration of greenhouse gases increases, temperature increases.
04:13 Does clouds in atmosphere help in reducing the Greenhouse Effect?
04:18 Add Clouds to the simulation from the Options menu.
04:23 Observe the temperature. Note that Clouds will help the atmosphere to retain heat.
04:30 You can also compare the atmosphere during 18th century and Ice age.
04:36 Click on 1750 radio-button.
04:40 Note the composition of greenhouse gases.
04:44 Click on Ice age radio button.
04:47 Note the change in composition of greenhouse gases.
04:52 Percentage composition of greenhouse gases in Ice age is much lower.
04:58 Click on Reset All button at the bottom of the screen to reset the simulation.
05:04 Click on Yes to confirm your action.
05:08 Now, let us explore other screens in this window.
05:13 Click on Glass Layers tab.
05:16 Here, we have an option to add Glass Panes to the simulation.
05:22 This helps to understand the effect of Glass Panes on atmospheric temperature.
05:28 Let us add a Glass Pane and observe the change in temperature.
05:33 Add more Glass Panes and see what happens.
05:38 Click on Photon Absorption tab.
05:41 Drag the Infrared Photon slider to release the photons.
05:46 Click on Atmospheric Gases radio buttons, one by one, and check the vibrations.
06:00 Click on Build Atmosphere radio button.
06:04 Drag the sliders for the respective atoms.
06:19 Then drag the slider for releasing Infrared or Visible Photons.
06:25 Observe the vibrations of the molecules.
06:29 Let us summarize.
06:31 In this tutorial, we have learnt about the effect of greenhouse gases on atmospheric temperature,
06:38 compared the atmosphere of Ice age and Today,
06:43 effect of Glass panes and Clouds on atmospheric temperature,
06:48 interaction of photons with atmospheric gases,
06:52 contribution of atmospheric gases to Greenhouse Effect.
06:57 As an assignment, compare atmospheric temperature during 18th century and Ice age.
07:05 Add Clouds to the simulation and observe the changes in the temperature.
07:11 Explore Glass layers and Photon Absorption screens.
07:16 Explain why Glass panes increase the temperature of the atmosphere.
07:22 The video at the following link summarizes the Spoken Tutorial project.

Please download and watch it.

07:31 The Spoken Tutorial Project team conducts workshops using spoken tutorials and gives certificates on passing online tests.
07:41 For more details, please write to us.
07:45 Please post your timed queries on this forum.
07:49 This project is partially funded by Pandit Madan Mohan Malaviya National Mission on Teachers and Teaching.
07:57 Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India.

More information on this mission is available at this link.

08:09 This tutorial is contributed by Snehalatha Kaliappan and Meenal Ghoderao from IIT-Bombay.

Thank you for joining

Contributors and Content Editors

PoojaMoolya, Sandhya.np14, Snehalathak

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