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This article describes the work being done by scientists to determine the origin of water found in Earth's oceans. A supplemental exploration of the Herschel Space Observatory is included. The article is targeted to children ages 10-12.

Audience: Informal education
Materials Cost: Free

This question is addressed through a series of questions and answers, each providing related introductory information such as how climate change is studied, the history of Earth’s climate, and the effects of climate change on Earth’s geology and... (View More)

In this self-paced tutorial, learners examine data to determine the relative contribution of what we call natural climate cycles and that of human-caused greenhouse gases to contemporary climate change. Changes in the Earth-Sun geometry over time... (View More)

This introductory textbook chapter presents data demonstrating decreased global biodiversity and its link to human activity. The resource includes a field-based student investigation of local biodiversity, links to current news articles, and an... (View More)

In this problem set, learners will analyze a table of the length of day (hours) and the number of days per year on Earth in past eras. They will calculate future values, plot some of the data and identify the rate of increase. Answer key is... (View More)

Keywords: Inquiry; Table analysis
Audience: Middle school, High school
Materials Cost: Free

In this activity, students investigate sea level change during glacial maxima during the Ice Ages, and learn how lowered sea level presented additional routes for intercontinental human migration. Summary background information, data and images... (View More)

Audience: Elementary school, Middle school
Materials Cost: Free per student

This activity provides a list of scientific prefixes and suffixes along with their English meaning. Students are instructed to combine word elements to create the name of a dinosaur, create an image, and then write a description of its habitat and... (View More)

Keywords: Etymology
Audience: Elementary school
Materials Cost: Free

This is a reading-comprehension lesson about historical meteorite falls. Learners will read about large historical meteors and meteorites falls, discuss the effects on people, and compare their reactions with those in recorded history. Suggestions... (View More)

Keywords: Meteorites
Audience: Elementary school, Middle school, High school
Materials Cost: Free

This is a lesson about discerning fact and fiction in news articles. Learners will read tabloid articles about meteorites and decide if the information is fact or fiction. Questions, extensions, and advanced preparation and procedural tips are... (View More)

Keywords: Meteorites
Audience: Elementary school, Middle school, High school
Materials Cost: Free

This is a lesson about the effects of large impacts. Learners will use critical thinking skills to evaluate and apply data from a narrative to a scientific selection process, will demonstrate or visualize simulations of some of the effects of a huge... (View More)

Keywords: Meteorites
Audience: Elementary school, Middle school, High school
Materials Cost: Free
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