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Water Cycle
Number: 0188 Anonymous: This is Members Only content.Become a Member Today at the Introductory Price of Only $20 for an Entire Year, and get full access to this site.Have you ever really thought about...
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Continuous Change
Number: 0183 Anonymous: This is Members Only content.Become a Member Today at the Introductory Price of Only $20 for an Entire Year, and get full access to this site.Just as we change as we age, the...
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Fast and Slow Change
Number: 0186 Anonymous: This is Members Only content.Become a Member Today at the Introductory Price of Only $20 for an Entire Year, and get full access to this site.From earthquakes that last seconds...
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A Model of the Water Cycle
Number: 0174 Anonymous: Sorry, but this content is reserved for subscribers only.The $20/year subscription helps cover the costs of producing new videos, writing curriculum units, site development,...
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Science Photo of the Day #724
It has been far too long since I posted an alligator photo. This one was taken at Shark Valley, in Everglades National Park. The area is flat as a pancake, and more than thirty miles from the nearest...
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Building a Rain Gauge, part 2
Number: 0175 Anonymous: Back to part 1.Select the player that works best for you.Slow Connection High Speed Flash High Speed QuicktimeWhat Does a Rain Gauge Really Tell Us?Now that we know the proper...
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Science Photo of the Day #740
I love to look out the window on plane trips. If you have ever done that, you may have seen bands of dark and light vegetation winding across the fields. What caused that?thumb: read more
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Science Photo of the Day #753
What is the difference between weathering and erosion?thumb: read more
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Science Photo of the Day #849
Nancy and I recently visited one of the many slot canyons found in Utah. How do these deep, narrow canyons form?thumb: read more
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Science Photo of the Day #851
This is Glen Canyon Dam in Page, Arizona. It is a hydroelectric dam, converting the potential energy of the lake water into electrical energy. Energy does not just appear out of nowhere, so the...
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Saving Water
Anonymous: Since I have had so much fun in the Everglades, I thought we would do a related experiment this week. One of the most important things in the Everglades is water. There is a very delicate...
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Looking at the Present
Anonymous: An important step in reading the rocks is understanding how they formed. To do that, we look at the places where rocks are forming now. By studying the deposits in rivers, lakes, oceans,...
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Science Photo of the Day #959
A rock from our yard. What caused all of the curved markings?thumb: read more
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