Test #8 02/21/12

Plate Tectonic Test Review

Diagram #1
 1. Oceanic crust is colliding with continental crust
2. convergent
3. oceanic and continental
4. oceanic is more dense
5. It goes back to the mantle, subduction
6. coastal volcanoes and oceanic trenches

Diagram #2
1. 2 continents are colliding
2. convergent
3. 2 continental plates
4. one is more dense than the other
5. back to the mantle, subduction
6. folded mountains

Diagram #3
1. two oceanic plates are colliding
2. convergent
3. 2 oceanic plates
4. one is more dense (the older one is more dense)
5. goes back to the mantle, subduction
6. underwater volcanoes and trench

Diagram #4
1. two oceanic crusts are moving away from each other
2. divergent
3. 2 oceanic plates
4. Basalt
5. gets older
6. mid ocean ridge (huge underwater mountains)

Diagram #5
1. two plates sliding past each other
2. Transform
3. continental
4. earthquake

Questions
1. Theory of continental drift described all of the evidence such as fossils, mountains, coal and glaciers but could not explain the force that was moving the continents. The theory of plate tectonics explained how the plates were moving and supported the theory of continental drift.

2. animal fossils (mesosaurus), plant fossils (glossopteris), coal, glaciers, mountain ranges and how the continents seem to fit together like pieces of a puzzle.

3. Density - more dense sinks

4. Convection

5. Crust - solid
Mantle - solid
Outer Core - liquid
Inner Core - solid

6. Mantle

7. Crust

8. Lithosphere

9. Asthenosphere

10. in the Asthenosphere

11. Convection occurs when material is heated and becomes less dense and rises.  Once it rises, it cools and becomes more dense and sinks.

12. The seismic waves from an earthquake give us evidence to prove that there is a difference between the inner and outer core.

Pre-Ap The s waves do not travel through liquid and so they do not reach the other side of the earth and the p waves are bent in liquid and so there is a small shadow zone on both sides of the earth that do not receive p waves.

103 degrees - 143 degreees = no p waves and no s waves
143 degrees - 180 degress = no s waves





Test # 4 - 11/8/11

Here are the answers to the take home quiz, in addition to this information, also know the following....

A physical change changes the appearance of the substance, but does not change it chemically. examples of physical changes are breaking glass, cutting paper, chopping wood, shredding papers and changing the state of matter such as melting, freezing and evaporating.

A chemical change is a change that results from a chemical reaction and creates a new substance with new propeties. Examples include baking bread, burning wood, exploding dynamite and any reaction that results in a new substance such as a precipitate (a solid that forms from mixing two liquids) or a gas being produced (look for bubbling and fizzing!) Evidence of a chemical reaction includes, making a gas, change in temperature, and a new substance with new properties.

Law of conservation of mass states that the mass of the reactants is equal to the mass of the products.

Protons and Neutrons are in the nucleus and added together give us the mass of an atom

In a neutral atom the protons = electrons

Elements in the same column act the same, so two atoms in the same family/group will react with the same elements.

Coefficient tells us # of Molecules
Subscript tells us # of atoms of each element

________________________________________________________________

Mg + O₂ --> MgO

Mg = 1         Mg=1
O=2              O=1

Not Balanced (Balanced would be 2Mg + O₂ --> 2MgO)

__________________________________________________________________

2Al₂O₃ --> 4Al + 3O₂

Al = 4         Al=4
O=6            O=6

Balanced

Test 1 -  9/13/11
 Lab Safety, Scientific Method, Experimental Design and Newton's Laws of Motion

Study Guide Answers