Part 1:

Interactive exercise. Assistance may be required. The paper sacks below contain different colored chips that represent the different elements found in the atmosphere, living matter, Earth’s crust and the oceans. Click anywhere to open up the bags. Use the key to identify the elements. Make a hypothesis as to which location each bag represents.


Part 2:

Interactive exercise. Assistance may be required. Analyze the graphs and data tables below. Determine which element each section of the pie chart represents. Select the appropriate element from the pull down menu.