8th Grade: Earth's Climate 🌎

Interactive Lesson • $\text{Weather}$ vs. $\text{Climate}$ • $\text{Greenhouse Effect}$

What is $\text{Climate}$? 🌡️

  $\text{Climate}$ and $\text{Weather}$ are often confused! **$\text{Weather}$** is what's happening outside right now (e.g., "It's raining today"). **$\text{Climate}$** is the average pattern of $\text{weather}$ in a location over many years (e.g., "The $\text{climate}$ in the desert is usually hot and dry").

  The most important natural process influencing $\text{Earth}$'s $\text{climate}$ is the $\text{Greenhouse Effect}$.

 
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The $\text{Greenhouse Effect}$ ☀️

Think of $\text{Earth}$'s atmosphere like a blanket or a greenhouse. It keeps us warm! This is done by special gases called **$\text{Greenhouse Gases}$** ($\text{GHGs}$).

 

1. Solar Energy Arrives

 

Shortwave $\text{radiation}$ from the sun enters the atmosphere and warms the $\text{Earth}$'s surface.

 

2. Heat is Reradiated

 

The warm $\text{Earth}$ surface releases heat back toward space as longwave infrared $\text{radiation}$.

 

3. Trapping the Heat

 

Greenhouse gases ($\text{like Carbon Dioxide ($\text{CO}_2$), Methane, and Water Vapor}$) trap some of this outgoing heat, keeping the $\text{Earth}$ warm enough for life.

Video: $\text{Greenhouse Effect}$ and $\text{Climate Change}$ 🧊

Watch a simple demonstration of how $\text{GHGs}$ affect $\text{Earth}$'s temperature.

 
 
 

Practice Problems ($\text{Weather}$ vs. $\text{Climate}$)

Click the correct term for each statement.

 
   
1) "It will be sunny and $85^\circ\text{F}$ tomorrow."
   
               
   
 
 
   
2) The $\text{Arctic}$ region has temperatures below $0^\circ\text{C}$ most of the year.
   
               
   
 
 
   
3) The natural process that keeps $\text{Earth}$ habitable.
   
               
   
 
 
   
4) The long-term rise in the average temperature of $\text{Earth}$'s $\text{climate}$.
   
               
   
 

⚡ $\text{Greenhouse Gas}$ Challenge!

Click on the items that are considered **$\text{Greenhouse Gases}$** ($\text{GHGs}$) and contribute to warming.

 
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Find the $\text{GHGs}$! (There are 2 correct answers per set)
 
     
 
 

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