May Earth be Revolving around the Sun?
Ninth graders explore how Aristarchus used the position of the half-full Moon to estimate the distance to the Sun, and how he made a great error, but still figured out that the Sun is much larger than Earth.
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Star Power! Discovering the Power of Sunlight
It takes less than 10 minutes for energy from the sun to travel 90 million miles to Earth! In the first installment in a series of four, groups measure the amount of solar radiation that reaches Earth. They then discuss how this is...
9th - 12th Science CCSS: Adaptable
How Do Earth's Orbital Variations Affect Climate?
How does Earth's orbit around the Sun affect climate? This third installment of a six-part series looks at how Earth's orbit affects the amount of insolation at locations on Earth involves different experiments used in conjunction...
7th - 12th Science
New Review Measure the Solar Diameter
Scientists could measure the diameter of the sun before they knew its distance. Scholars construct a simple mirror box to measure the diameter for themselves. They compare this measurement with the official size, listed in a textbook,...
7th - Higher Ed Science CCSS: Adaptable
Why Do Buildings Fall in Earthquakes?
There are few natural phenomena as startling as an earthquake, and depending on the building you're in, these experiences can be downright terrifying. Follow along as this video explores the factors that determine how a building reacts...
5 mins 4th - 12th Science CCSS: Adaptable
Sunlight Is Way Older than You Think
Light travels fast... really fast. But that doesn't mean it moves instantly from its source to whatever object it hits. After watching this video students will understand that once generated in the sun's core, light takes thousands of...
5 mins 7th - 12th Science CCSS: Adaptable