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Earth Science Journal
#5 What's Up?
Answer in your journals using complete sentences.
Be sure to write so people can read and understand your answers.
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Is this map upside down?
Explain your thoughts in your journal.
What's Up?
Define the word "up" in your own words.
What's down?
Define the word "down" in your own words.
Draw this in your journal.
Draw a house in positions B, C, and D.
Don't feel bad if you draw your houses floating in the air or upside down.
Many people draw them that way.
Of course, you know that down is beneath you, and up above you, but many people don't know why up and down are where they are.
Labeling Up and Down gives us a clue!
Down: Towards the center of the Earth.
Down, ends up at a specific location and depth.
It ends up in the same spot for anyone on earth!
All directions for down end "up" here!The Earth's Center!
It is a far different story for "up."
Up: Away from the center of the Earth.
Up points to an infinite number of directions directly away from the earth's core into every direction in the Cosmos!
Why?
Check out the big and round things found in our Cosmos!
Thought Experiment
If we were all floating in the depths of outer space with nothing else close to us, just the abyss of space, what would happen to us and the stuff around us?
We would slowly be pulled together due to our gravity.
If enough stuff were around, maybe we'd become a star!
Write down the three ideas in the above video about gravity.
How do solar systems form?
Reference Tables
page 10
This is just a quarter of the pie!
Label which layers are liquid and solid.
The rest of page 10 will give you some clues.
Notice the melting point temperature as compared to the interior temperature!
How did you do?
Notice how the melting point temperature is lower than the interior temperature in the outer core but higher than the interior temperature in the inner core!
Answer these questions in your journals.
1. Which layer of the earth is the most dense? Inner core
2. What is the depth of the interface between the inner and outer core? 5,100 km
3. What is the pressure between the stiffer mantle and the outer core? 1.5 million atmospheres
4. What is the temperature between the asthenosphere and the stiffer mantle? 2,600 degrees Celsius
5. What is the depth to the center of the earth? 6,300 - 6,400 km
Do you still think that this map is upside down?
Where is down on this map? Where is up?
What would you have to do to turn this map upside down?You would need to flip the map over like a pancake!
Point up.
Point North.Is up, north?
NO!!!
Point down.
Point South.Is down, South?
NO!!!
A reflection about our Pale Blue Dot!
Reflection
What did you learn from this entry?
Bonus!
Why are planets spherical? - Cosmos Magazine
Read and summarize the above article.
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