Section 1: Click Earth S Structure

Name:______Period ______Date:______

Directions: This assignment has you working on an interactive website that explores the earth's interior, including its tectonic plates and their movements and how mountains, volcanoes, and earthquakes are formed. Go to the following website and complete the following activities.

Go to: http://www.learner.org/interactives/dynamicearth/

Section 1: Click Earth’s Structure

1. Geologists learned about the Earth’s interior by studying ______.

2. They discovered the Earth’s interior is composed of three layers that include the

______, ______and ______.

The Earth’s Crust

3. The Earth’s crust is ______and ______. It is the outermost and

______layer. The crust is not the same ______under

The oceans and continents.

The Mantle

4. The mantle is subdivided into two parts and is located directly below the ______.

5. The lithosphere is solid rock made up of the ______and a tiny bit of the

______. The lithosphere has plates that hold the

______and ______.

6. The ______is directly under the lithosphere and allows the plates to move

or float in a semi liquid zone in the upper mantle.

The Core

7. The core is divided into two parts, the ______core and the ______core.

The outer core is the only ______layer of the Earth. It is made of

______and ______.

8. The inner core is extremely ______and ______. It is made of

______and ______.

Section 2: Click Plate Tectonics

Decide which picture more resembles Earth’s continents as they appear today. Click on that picture. Then select How did we know that?

1. What was the name of the German Scientist that published The Origin of Continents and Oceans?

______. This scientist discovered 3 things that helped support

his theory.

A. The coastlines of ______and ______

might fit together.

B. Plant and animal ______were found on the coastlines of these

continents that are now separated by vast ______.

C. He also noticed that geologic formations, like ______

on the two continents also matched up.

2. What was “Pangaea”?

3. What was his idea about what happened to Pangaea?

Continents on the Move- Finish the chart below.

4. The modern ______theory developed in the 1960’s, states

that the Earth’s lithosphere, is broken up into ______. They are slowly but constantly

______.

5. What does this help to explain?

*Test your skills on Plate Tectonics: Select the Continents Over Time. Use your work in the chart on

page 2 to help move the pictures into their correct spot. Were you able to correctly place the

pictures into the timeline?

Circle one: yes or no

Section 3: Click Plates and Boundaries

1. There are ______major tectonic plates. There are 2 main types of tectonic plates. They are

______and ______.

2. ______plates are thicker and usually ______than oceanic

plates.

3. The names of the plates usually refer to ______, ______or regions

of the globe where they are located.

4. What are the names of the 15 major tectonic plates?

1. 9.

2. 10

3. 11.

4. 12.

5. 13.

6. 14.

7. 15.

8.

5. The border between two tectonic plates is called a ______. There are 3

different types. Draw and describe what happens at each of them.

Convergent:

Divergent:

Transform:

6. Carefully study the map below the boundaries descriptions to see where each plate is located,

particularly the minor plates. Then roll over the key to see where the various boundary types are

and what think about what action is taking place there. Then, take the Plates and Boundaries

Challenge.

Record your score: ______/15 Record your next score: ______/22

Section 4: Slip, Slide and Collide

1. Where do most geological events occur?

Explore the Convergent Boundaries and Colliding Plates by rolling the mouse over the diagrams and reading the information on the page. Describe how each of the following develop, using the diagrams and written information.

2. Subduction Zones-

3. Volcanoes-

4. Island Arcs-

5. Tsunami-

6. Mountains-

Divergent Boundaries and Spreading Plates: View the video on how rifts develop. Using this diagram,

draw how a rift is formed. Be sure to label the diagram with the following vocabulary: volcano, lake, rift valley, and magma. Don’t forget to draw arrows to show the direction of movement.

Transform Boundaries- Grinding Plates

7. At a transform boundary, a ______is created when two tectonic plates

______past each other in a ______direction. This type of

fault produces ______. The fault at this boundary is called a

______- ______fault. The best studied of these is the

______fault in California.

8. Describe in your own words how an earthquake occurs.

Take the Plate Interactions Challenge. Record your score below. ______/ 10

TEST SKILLS QUIZ: Take the quiz. There are 30 questions. When finished, review any questions you

missed. Do not print your results!

How many of the questions did you get correct? ______/30.

Below, write which of the number(s) of the question(s) you missed.