Let’s Review! The Nebular Hypothesis The Nebular Hypothesis Several, Alternative, Hypothesis Several, Alternative, Hypothesis The Structure of our Solar System The Structure of our Solar System And Several of Newton’s Laws And Several of Newton’s Laws
Interior Design Of The… Earth!
How is the earth’s interior the same as the interior of an ordinary egg? Let’s find out!
Before we start… Make sure your desk is clear of all items except your notes and a pencil. Make sure your desk is clear of all items except your notes and a pencil. You will be working in pairs with your assigned lab partner. You will be working in pairs with your assigned lab partner. Do not use your marker or do anything to the boiled egg I give you until I give specific instructions of what to do. Do not use your marker or do anything to the boiled egg I give you until I give specific instructions of what to do. Remember, all labs count as a class participation grade. Remember, all labs count as a class participation grade.
How many layers do you suppose the earth actually has? Do you know some of their names?
Earth’s Interior
Layers of the Earth Crust Crust Mantle Mantle Outer Core Outer Core Inner Core Inner Core 5 – 70 km 2900 km 2270 km 1216 km The Mantle contains 82 % of the earth’s volume
Remember! Earth’s interior layers are hot, layered, rich in iron.
Sweat from working out (AKA HOT) Wearing different kinds of clothes on his person (AKA LAYERED) Working out with heavy metallic objects (AKA RICH IN IRON) EARTH ROCKS!
Definition crust - the rigid, rocky outer surface of the Earth, composed mostly of basalt and granite. The crust is even thinner under Earth’s oceans.
Crust + Upper Mantle = Lithosphere
Definition mantle - a rocky layer located under the crust - it is composed of silicon, oxygen, magnesium, iron, aluminum, and calcium. Convection (heat) currents carry heat from the hot inner mantle to the cooler outer mantle. The upper mantle - is rigid and is part of the lithosphere (together with the crust).The upper mantle - is rigid and is part of the lithosphere (together with the crust). The lower mantle - flows slowly, at a rate of a few centimeters per year.The lower mantle - flows slowly, at a rate of a few centimeters per year. The asthenosphere - is a part of the upper mantle that exhibits plastic properties. It is located below the lithosphere, between about 100 and 250 kilometers deep.The asthenosphere - is a part of the upper mantle that exhibits plastic properties. It is located below the lithosphere, between about 100 and 250 kilometers deep. Malleable – Able to be shaped and bent. ((Think silly putty or playdoh.Malleable – Able to be shaped and bent. ((Think silly putty or playdoh.
Upper Mantle + Crust = Lithosphere Lower Mantle + Outer Core =Asthenosphere
Definitions inner core - the solid iron-nickel center of the Earth that is very hot and under great pressure. outer core - the molten iron-nickel layer that surrounds the inner core.
Clear Your Desks! It’s Time for a Group Quiz!
1.What is this layer similar to in an egg? 2.How much of the Earth’s volume does this layer hold? 3. And 4. What are the names of these layers? Bonus: Name another item, other than an egg, that has layers like the Earth. When you have finished the quiz, turn your papers over and place your pencils on top of them. Also, be respectful and whisper until the last group is finished with their quiz.
HAVE A GREAT DAY!