Global Meltdown

https://www.youtube.com/watch?v=prACMnIDJ-M

Words

• Permanent sea ice found in the Arctic and Antarctic is called polar ice.
• When ice melts it changes to water.
• When you run a faucet, you turn it on so that water will start to flow.
• A drain is an opening in the bathtub or sink that leads to a pipe.
• If you monitor something, you regularly check on it to see what is happening or how it is changing.
• Sea level rise means that the average level of the seas across the globe is becoming higher. 

Assignment

1. How does NASA check the state of polar ice?
   a By opening up the drain and letting water out.
   b With satellite lasers in space.
   c With space monitors that measure the thickness.
   d With special bathtubs on Antarctica and Greenland.

2. What is the most important cause that sea levels are rising?
   a Melting polar ice.
   b Snow falling over the ice sheet
   c The thickness of the ice through time
   d Thinning ice sheets.

3. So is polar ice melting?
   a Yes.
   b No.
   c Nobody knows.
   d It doesn’t say.