NAME: DATE Earth Science The Average Chemical Composition of Earth\'s Crust, Hyd
ID: 154189 • Letter: N
Question
NAME: DATE Earth Science The Average Chemical Composition of Earth's Crust, Hydrosphere, and up the crust, hydrosphere, and lithosphere. is shown 2 ways: percent of the crust's mass, and percent of the crust's Troposphere" shows the elements (kinds of atoms) that make Note: For the crust, the information ways: percent volume. (For example, the table shows that Oxygen makes up 46.10% crust's volume.) Information about the hydrosphere and tropos Complete the following tasks to practice accessing information from this table. of the crust's mass, and 94.04% of the phere is only shown by % of volume. Element(s) That Are Unique to This Layer Layer of Earth Most Abundant Element in This Layer Crust Hydrosphere Troposphere Fill in the chart below using the information from the "Average Chemical Composition of Earth's Crust, Hydrosphere, and Troposphere" chart.(Vocabulary note: "Most abundant element" means "what element is there the most of?") 1. 2. a. What element is present in the crust, hydrosphere, and lithosphere? b. What is the % (by volume) of this element in each layer? Hydrosphere:_ Troposphere: Crust: Which layer of the Earth do you think is best represented by the pie graph to the right? Justify your response using evidence from the "Average Chemical Composition of Earth's Crust, Hydrosphere, and Troposphere" table 3. Aluminum ron Calcium Sodium Potassium oher OxygenExplanation / Answer
1. Layer of Earth Most abundant element in this layer Element(s) that are unique to this layer
Crust Oxygen Silicon, Potassium
Hydrosphere Hydrogen Oxygen
Troposphere Nitrogen Oxygen, Inert gases
2. a. The element that is found in all of the three layers is Oxygen.
b. Percentage of oxygen in Crust : 46%, Hydrosphere : 33%, Troposphere : 21%.
3. The layer of the Earth represented by the pie graph is the Earth's Crust.
Explanation : Earth's crust contains Oxygen(46.1%), Silicon(28.2%), Aluminium(8.23%), Iron(5.63%), Calcium(4.15%), Sodium(2.36%), Potassium(2.09%), Magnesium(2.33%) and other elements. The pie graph shows all these elements with their exact proportions as it is found in the crust.
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