Download Part I. The Layers of Earth - www .alexandria .k12 .mn .us

Layers of the Earth Webquest
Name _________________________ Hr____
Explore the following websites and answer the corresponding questions below.
Part I.
The Layers of Earth :
A. Go to the The Volcano World website: http://volcano.oregonstate.edu/earths-layers-lesson-1
1. Label the 4 main layers of the Earth.
(Note: The Mantle has two parts. Consider them as one layer in this instance.)
(#2 is sometimes
separated into upper and
lower)
2. What causes the mantle to “flow”? ________________________________________
3. What are the two main metals that make up the Earth’s core?
___________________________ and _____________________________
4. Describe, in your own words, how the earth’s layers were formed?
(see “The Four Layers”)
_____________________________________________________________________
_____________________________________________________________________
B. The Earth’s Layers:
Use the following sites to help you understand the Earth’s interior-http://www.mnh.si.edu/earth/main_frames.html (Select the “Multi-Media Version” and
then the “Plate Tectonics and Volcanoes” tab. Now, click on “Inner Earth” and read the
Introduction (2 slides) and then click on words CRUST, MANTLE (info on Lithosphere here!),
and CORE . Then try this next interactive website....
http://www.harcourtschool.com/activity/science_up_close/606/deploy/interface.html
1. The Lithosphere is the Earth’s Crust and the uppermost part of the Earth’s Mantle.
What is special about it? _________________________________________________
______________________________________________________________________
2. Complete the following table:
Types of Crust
Oceanic
Thickness:
Made of:
Continental
km Thickness:
Made of:
VIP #1:
VIP #1
VIP #2:
VIP #2:
km
C. Tectonic Plates: http://www.sciencemonster.com/earth-science/layers-of-the-earth.html
–only use the first 3 pages!!!
1. What are tectonic plates?_____________________________________________
__________________________________________________________________
2. What is something else that you learned from pages 1-3?
___________________________________________________________________
___________________________________________________________________
Part II. Convection Currents and the Mantle
Heat transfer is the movement of heat energy from a warmer object/place to a colder
object/place. There are three ways in which heat can be transferred: radiation, conduction,
and convection. Click on the following 3 links and answer the questions below.
A. Go to https://www.wisc-online.com/learn/natural-science/earthscience/sce304/heat-transfer--conduction--convection--radiation ,
then Convection, Conduction and Radiation , and also this Heat Transfer website.
1. How is heat transferred by conduction? _________________________________
_____________________________________________________________________
2. Explain the process of convection.______________________________________
__________________________________________________________________
3. How is heat transferred by radiation?____________________________________
___________________________________________________________________
B. On the Heat Transfer web page, click the “Mini Quiz” tab at the top and answer the
quiz questions. Put your answers below.
1. _____
2. _____
3. _____
C. Go to www.universetoday.com/26717/earths-mantle/ to learn about
what influence convection currents have on Earth. Read and answer the following
questions.
1. Describe how convection currents occur in Earth’s mantle. ___________________
___________________________________________________________________
2. What is a constructive force caused by the convection in the mantle? __________
___________________________________________________________________
3. What is a destructive force caused by the convection in the mantle? ___________
___________________________________________________________________