Activity 1: Looking for Clues to the Past
Tree ring images from a variety of tree types and locales that provide clues to past weather conditions:
Activity 3: Investigating How Orbital Changes Have Affected Past Climate
Animation of the Milankovich cycles, which are complex and hard to visualize without a simulation:
https://climate.nasa.gov/news/2948/milankovitch-orbital-cycles-and-their-role-in-earths-climate/
Activity 4: What's Happening Now and What's Projected for the Future?
A summary by NOAA that presents data that indicate climate change:
https://www.ncdc.noaa.gov/monitoring-references/faq/indicators.php
Visualizations showing how some key climate indicators are changing over time: