How Much Water is on the Earth?

By: Kevin Olson

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.

Data

About 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/