big question how much water covers the earth?
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Hypothesis? I think the Earth has 70% water and 30% landTRANSCRIPT
Big Question• How Much water covers the Earth?
Hypothesis?
• I think the Earth has 70% water and 30% land
5-8 Interesting facts• 29.22% of the earth is land.• 70.78% of the earth is water.• The mass of the ocean is
approximately 1.35 times 10 to the18 power metric tons.
• The Dead sea is 1369 feet below sea level.
• The mantle covers most of the Earth
Experiment–Materials– 1) Clay
Step-by-StepFind out how much of the Earth is water
and how much is land. Make a model out of clay.Variables
The different colored clay.
Observations from Experiment
• The mass the ocean is approximately 1.35x10 to the 18 power metric tons.
DataAbout 70%of the Earth is covered In water. The
depth of the ocean is several thousand feet. 90% of the water on the Earth is oceans. The rest are lakes, ponds, rivers, glaciers and aquifers. The other 30% of the Earth is land.
Analysis of data
• The experiment did test my Hypothesis.
Conclusion
• My hypothesis was correct. There is more water on the Earth tan land.
• I would try to think of other ways to compare the water to land so I had more than one example.
Refer
ReferencesReferences
1. www.science.howstuffworks.com
2. www.crayola.com/lesson-plans/details/fraction-earth--water--land-lesson-plan/