NOVA Online: Cracking the Ice Age (see bottom of page for navigation)
Ice sidebar (see bottom of page for navigation)

measuring tape image

Hmmm . . . if someone told you of a way to accurately measure continental movement—and if you thought that way made sense—then you might be more likely to accept that movement occurs, even though you can't actually see or hear it. (Remember though . . . just because someone tells you they have proof of something—in this case, a way to measure whether continents move—doesn't mean it's true. You have judge whether you think what someone is saying makes sense.)

So see if you think this makes sense. Scientists believe they have a way to measure continental movement. It involves using some of the items below. Think about each one for a minute and then choose the one that makes most sense to you.

Ice Home | Big Chill | Greenhouse | Continents
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