Get a free trial until June 30, 2026!
		New members get access to our science units, hands-on activities, mini-lessons, & more!
			Mini-lessons
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  Something really unusual happens during this storm. Can 
you spot it? If you blink you’ll miss it! (Video will repeat.)
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  This is a rare form of RED lightning called a 
“red sprite.” Very few people have ever seen it!
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  Lightning flashes so fast. What do you think it 
would look like in slow motion?
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  This is lightning slowed down. This would 
normally happen in less than 1 second!
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  
Check out these rainbows! What’s similar 
between them? What’s different?
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  This is called a double rainbow. The one on “top” 
is dimmer, and notice the colors are reversed!
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  What do you think is going on here?!
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  This is a shooting star (meteor), but it’s so bright it can be 
seen during the day!
  
Usually meteors burn up before they hit the ground, but 
sometimes they don’t. Here’s a car that was hit by one!
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  These strange lights, called "aurorae," usually can only 
be seen in two areas on Earth. Do you know where?
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  This only happens near the North Pole and South Pole! 
People call them “Northern Lights” and “Southern Lights.”
  
  
    Please wait…
  
  
    This video is having trouble loading. You may have lost your Internet connection.
    
Step 1: Click to Reload this page
    
    
      Step 2: Click to
      
        Try our other video player
    
    
        Step 3:  contact support if trouble persists.
    
    
      Or,
      dismiss this message.
    
  Voting for this episode is now closed. Would you like to vote on the most recent poll?
- 
            
How do squirrels remember where they hide acorns?
-Audrey, 4th Grade
 - 
            
Why do some animals only come out at night?
-Ryan, Kindergarten
 - 
            
Why do you get sleepy after a big meal?
-Braelynn, 1st Grade