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The Largest River on Earth Is in the Sky
7 mins 9th - 12th CCSS: Adaptable
Water vapor released by trees in the Amazon creates a floating river. In fact, it's the largest river on Earth! A video presentation examines the science behind the water vapor and explains how rains seeds form to create clouds.
The Deadliest Flu Season in History?
9 mins 9th - 12th CCSS: Adaptable
Is it possible for another flu outbreak like the Spanish Flu in 1918? A video lesson explains the factors that affect the spread of a virus and its effect on a population. The narrator describes the structure of the different virus...
Does Someone Else Have Your Face?
14 mins 9th - 12th CCSS: Adaptable
Our brains may misrepresent features that make some faces look more alike than they actually are. Learners watch a video lesson that breaks down how the brain reads facial features and how those features themselves are not as important...
The Evolution of the Heart (A Love Story)
10 mins 6th - 12th CCSS: Adaptable
Not all hearts are the same, but their functions are similar. An instructor discusses the origin of the first organisms with a heart in a video lesson from the PBS Eons series. The lesson includes discussion of the evolution of the...
The Humans That Lived Before Us
12 mins 6th - 12th CCSS: Adaptable
You may struggle to find similarities between humans and many of our ancestors. Fossil evidence finds more and more signs of similarities between humans and many other species. A lesson outlines the fossil evidence and the questions...
1999 AP® Environmental Science Free-Response Questions
10th - 12th
Pollution is a real concern in most areas of Earth. A four-question AP® assessment has learners analyze data related to water pollution and air pollution as well as consider the pros and cons of recycling. Each question has several...
2000 AP® Environmental Science Free-Response Questions
10th - 12th
Practice makes perfect! A released AP® exam gives scholars practice with the high level of expectations of their exams. The exam consists of four questions from 2000. Questions ask about endangered species, recycling, alternative fuels,...
2001 AP® Environmental Science Free-Response Questions
10th - 12th
Water quality testing often reveals interesting facts about the local environment. Scholars respond to several AP® questions highlighting topics such as air pollution, water pollution, and the spread of disease. Each question requires a...