Sandhya.np14 at 07:06, 13 August 2018

2018-08-13T07:06:24Z

Snehalathak at 12:37, 7 August 2018

2018-08-07T12:37:17Z

PoojaMoolya: Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- || 00:01 || Welcome to this tutorial on '''Greenhouse Effect''', an Interactive '''PhET simulation'''. |- || 00:07 || In thi..."

2018-07-31T09:50:31Z

Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- || 00:01 || Welcome to this tutorial on '''Greenhouse Effect''', an Interactive '''PhET simulation'''. |- || 00:07 || In thi..."

New page

{|border=1
||'''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

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|| 00:30
||Firefox Web Browser version 53.02.2.

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|| 00:36
|| Using this simulation students will learn, Effect of greenhouse gases on atmospheric temperature.

|-
||00:44
|| Explore and compare the atmosphere of '''Ice age''' and '''Today'''.

|-
||00:49
|| Effect of '''Glass panes''' and '''Clouds''' on atmospheric temperature.

|-
||00:55
|| Interaction of photons with atmospheric gases.

|-
||00:59
|| 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.

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||01:47
|| Some of this heat is absorbed by the glass and some is reflected.

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||01:52
|| This mechanism keeps the energy of the sun trapped in the '''Greenhouse'''.

|-
||01:58
|| Use the following link to download the simulation.

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|| 02:02
|| I have already downloaded the '''Greenhouse Effect''' simulation to my '''Downloads''' folder.

|-
||02:08
|| I will open the simulation using the terminal.

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|| 02:12
|| Open the terminal.

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||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'''.

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|| 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 18<sup>th</sup> 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 18<sup>th</sup> 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

|}

@@ Line 29: / Line 29: @@
 |-
 || 00:36
-|| Using this simulation students will learn,  Effect of greenhouse gases on atmospheric temperature.
+|| Using this simulation students will learn,
 |-
 ||00:44
-|| Explore and compare the atmosphere of '''Ice age''' and '''Today'''.
+|| 2. Explore and compare the atmosphere of '''Ice age''' and '''Today'''.
 |-
 ||00:49
-|| Effect of '''Glass panes''' and '''Clouds''' on atmospheric temperature.
+|| 3. Effect of '''Glass panes''' and '''Clouds''' on atmospheric temperature.
 |-
 ||00:55
-|| Interaction of photons with atmospheric gases.
+|| 4. Interaction of photons with atmospheric gases.
 |-
 ||00:59
-|| Contribution of atmospheric gases to '''Greenhouse Effect'''.
+|| 5. Contribution of atmospheric gases to '''Greenhouse Effect'''.
 |-

PhET/C2/The-Greenhouse-Effect/English-timed - Revision history

Sandhya.np14 at 07:06, 13 August 2018

Snehalathak at 12:37, 7 August 2018

PoojaMoolya: Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- || 00:01 || Welcome to this tutorial on '''Greenhouse Effect''', an Interactive '''PhET simulation'''. |- || 00:07 || In thi..."