A Satellite’s Eye View Credit: NASA Source: http://en.wikipedia.org/wiki/File:Landsat7photo.jpg License: CC BY-NC 3.0
There’s nothing like a bird’s eye view to really see what’s happening. Satellites, like Landsat 7, are the ultimate way to view Earth from a distance.
Why It Matters
- Satellites in the Lands at program have been acquiring Earth images since 1972.
- It’s now possible to view the last 25 years of changes on Earth in GIFs on Google Earth. Learn more about the Timelapse project and GIFs here: http://world.time.com/timelapse/
- By comparing images over time, we can see the changes that are taking place on our planet.
- Most of these changes are the result of human activities.
With the link below, learn more about Earth changes over time. Then answer the following questions.
- Vlogbrothers, Some Mind-Bending Earth GIFS: http://www.youtube.com/watch?v=U0-R1a2ke48
- What does a satellite view do better than photographs taken on Earth’s surface?
- What do photographs taken on Earth’s surface show better than satellite images?
- What are some of the changes shown in this video that are the result of human activities? What is the activity that causes them?
- What does Hank Green talk about irrigation making the desert bloom like it’s a bad thing?
- Why does Mr. Green think that these images may lead people to take action to reduce human impact on the planet?