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Teacher_________________________

Todays Date___________________________

Plate Tectonics

This packet will be practice in the following 8th Grade Standards:

I can analyze different types of evidence for geologic, climatic, life form, and environmental changes over time

I can explain the processes happening in the geosphere, and how the affect geologic events

2

Name ____________________________________________________________________ Period

Plate Tectonics Unit Vocabulary

Unit Vocabulary List Keep track of all of the units vocabulary words as we go. For each word, include a definition and a sketch.

Term

Definition

Sketch

Term

Definition

Sketch

Heat Transfer

My heat transfer type:

What is it?

What does it look like? (draw it!)

What are some examples?

Heat Transfer Type

Description

Drawing

Examples

Radiation

Conduction

Convection

Convection In the Mantle

X

In each of the following situations, identify the method of heat transfer taking place (conduction, convection, radiation). More than one process may be occurring.

1. Hot coffee is stirred with a spoon, the spoon gets hot due to _______________.

2. A chair is placed several feet from a fire in a fireplace. The fireplace has a glass screen. The

side of the chair facing the fireplace gets warm because of_______________.

3. A certain type of decorative lamp contains colored liquids. These liquids form globs that break

off and rise to the top of the liquid. The globs rise due to _______________.

4. Near the ceiling of a room the air is warmer. The warm air rises because of _______________.

5. A college student holds the back of his hand near an iron to see if it is hot. Heat is transferred

to his hand by _______________.

6. A heater is placed under one corner of a water bed mattress. Warm water moves throughout

the mattress because of _______________.

7. A certain type of stainless steel cookware has a layer of copper applied to the bottom to help it

heat evenly. The copper transfers heat to the pan by _______________.

8. In a swimming pool, the water near the surface is slightly warmer. The warm water rises

because of _______________.

9. One end of a copper rod is placed in a flame of a Bunsen burner. Small pieces of wax placed

along the rod melt at progressively larger distance from the flame. Heat is transferred through

the rod by _______________.

10. A house burns down. On the house across the street, all of the vinyl siding is twisted and

warped by the heat. The heat was transferred across the street by _______________.

11. Warm air over the beach rises while cooler dense air from the ocean rushes in due to

_______________.

12. The metal skewer gets so hot that you drop your marshmallow in the campfire because of

_______________.

13. A huge rock at the state park gets so hot during the day that you cant sit on it from

_______________.

14. You lay on that same rock at night so that you can keep warm by _______________.

15. A fireman feels a door and it is hot from the fire on the other side due to _______________.

16. The cause of weather systems on earth is _______________.

17.You are in the top bunk of a bunk bed and you want to turn the air conditioner on while your

friend on the bottom bunk is fine is caused by _______________.

Sea Floor Spreading Outline (pages 33-39)

I. Mapping the Mid-Ocean Ridge

A. Mid-ocean ridge

1. the longest _____________________________________________ in the world

2. most mountains ______________________

B. ____________________ - a device that bounces sound waves off ________________ objects

II. Evidence for Sea-Floor Spreading

A. Harry Hess

1. Ocean floors move like _______________________________________

2. At mid-ocean ridge, ________________ material rises from _____________ and erupts. Molten material then spreads out, pushing older rock to both sides of ridge.

3. ____________________________________ - the process that continually adds new material to ocean floor.

B. Evidence from Molten Material

1. 1960s, Alvin ( a small sub) dived to ocean floor

2. Alvins crew found rocks that showed that molten material had _______________

again and again from ____________________along the central valley of the mid-ocean ridge

C. ___________________________________________

1. Earths magnetic poles have ______________________themselves

2. Rocks in ocean floor lies in a pattern of __________________ stripes

3. Iron bits locked into place have a _______________________________memory

4. Stripe of rock that shows Earths magnetic field pointed ____________________ followed by a parallel stripe pointed __________________________

III. Subduction at Deep-Ocean trenches

A. _______________________________________

1. Deep underwater canyons

2. Forms where oceanic crust bends downward

B. ________________________________________

1. Takes place where there are deep-ocean trenches

2. Process which ocean floor sinks beneath a __________________________ and back into the mantle

C. At deep-ocean trenches, __________________________ allows part of the ocean floor to sink back into the mantle, for tens of millions of year.

IV. Subduction and Earths Oceans - ocean floor renewed about every 200 million years

A. Subduction in the Pacific Ocean

1.

2.

B. Subduction in the Atlantic Ocean

1.

Quickly sketch, Figure 23 on page 38. Label Mid-ocean ridge, rift valley, direction of sea-floor spreading, trench, continental crust, oceanic crust, ocean floor, and mantle

(Did You Know? Tectonic plates are made of both continental and oceanic crust. The land that we see is the continental crust, about 30 kilometers (19 mi) thick. Under the sea, the heavier oceanic crust is much thinner, about 8 to 10 kilometers (5 to 6 mi) thick. Plates move about 8 centimeters (3 in) per year. Thats about as fast as a fingernail grows in a year! The tallest mountains in the world are still growing. About 60 million years ago, the Himalayan Mountains formed when the Indian Plate crashed into the Eurasian Plate. Today the two plates are still colliding and the Himalayas continue to rise. Los Angles sits on the Pacific Plate that is moving northwest and San Franciso sits on the North American Plate that is moving southeast. Moving towards each other at the rate of 5 centimeters (2 in) a year, someday these two cities may be neighbors! )

A Plate Tectonics Puzzle

Solve the puzzle on the next page to discover what the Earth looked like 220 million years ago.

1. Whats the code? Use the legend to identify the symbols on each island or continent.

2. Puzzle me this. Look at the shapes of continents and islands. What landmasses seem to fit together?

3. Lets rock! Examine the evidence and try to match up landmass boundaries that show similar rock strata, fossilized desert belts, and dinosaur fossils.

4. Hold that Pose. Look over the arrangement of the continents and islands and decide if the position of any of them should change. When you are satisfied with your map of Pangaea, tape or glue it down on the world map.

Tectonic Plates

17

Drawing The Boundaries

Divergent Boundary Oceanic

Example:

Effects

Divergent Boundary Continental

Example:

Effects

Convergent Boundary Oceanic/Continent

Example:

Effects

Convergent Boundary - Oceanic/Oceanic

Example:

Effects

Convergent Boundary Continent/Continent

Example:

Effects

Transform Boundary - Continental

Example:

Effects

Notes

NotesNotesNotes

NotesNotes

Fun Stuff!

T E A N C T F C S L G W T F U Z T P U W

N L S T O A R U M J V N L G S Y Z L L J

E T T C E I H A B U E F A U L T C O Y Z

G N H C G K T O N N Z X P Q A G N C C S

R A E Z H T I C I S L A E T V G J O F Z

E M N Z S D C T U I F A O A N R B D Q N

V G O U G Y N K T D I O Q Y A T V G O P

N Y S G N O S H A L B R R S Y C H D R A

O B P F C G O C R X A U E M Y C X E I H

C M H Y Y S N U D I V D S N Z O S Z C N

D A E R P T E C T O N I C S E S T S X X

B F R H H A V N P O Z V B I U G Q L Z V

R F E M I K I I I B M E T R Z W E J M U

P R V D V T X S W M F R E M Y J N W A C

E V U P J F F S D T A G R W N J F U I O

E P W D E O H D S O T E F K Z D H K I D

C I M S I E S U L E Y N V V K W E T D O

T C D W I L R D X H L T W V N E P B N Z

V P S O E C T X B Q W I S A T P P T Q Y

Q P K Z V D T M V N O I T C E V N O C X

ASTHENOSPHERE CONTINENT CONVECTION CONVERGENT CRUST DIVERGENT FAULT LITHOSPHERE MANTLE PRESSURE SEISMIC SUBDUCTION TECTONICS TRANSFORM WEGENER

Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.

Name ____________________________ Date ___________________ Class____________

Drifting ContinentsThis section describes a theory of how the continents came to be located where they are today. The section also gives evidence for the theory