edHelper.com
Earth Science
Rock Deformation, Part 2



Rock Deformation, Part 2
Reading Level
     edHelper's suggested reading level:   grades 7 to 8
     Flesch-Kincaid grade level:   5.87

Vocabulary
     challenging words:    footwall, nonvertical, sharp-pointed, step-like, anticlines, ductile, divergent, relation, anticline, monocline, strike-slip, syncline, intact, compression, sedimentary, bowl-shaped
     content words:    Rock Deformation, Great Rift Valley, East Africa, San Andreas Fault


Print Rock Deformation, Part 2
     Print Rock Deformation, Part 2  (font options, pick words for additional puzzles, and more)


Quickly Print
     Quickly print reading comprehension


Proofreading Activity
     Print a proofreading activity


Feedback on Rock Deformation, Part 2
     Leave your feedback on Rock Deformation, Part 2  (use this link if you found an error in the story)



Rock Deformation, Part 2
By Trista L. Pollard
  

1     Everyday the rocks on our planet go through stress, strain, and deformation. As you read in Rock Deformation, Part 1, there are many factors that affect how rocks respond to stress. Rocks that go through ductile strain often form folds. Folds are bent rock layers that form when compression occurs. There may be cracks near the fold. However, the rock layers tend to be intact and free from cracks.
 
2     Rock folds have different identifiable features. The limbs are the sloping sides of the fold. These limbs meet at the hinge or the bend in the rock layers. When you think of rock folds, you probably imagine a perfect upside down U. If this is so, then the fold would be sliced by a plane into two symmetrical halves. If the fold can be cut by this axial plane, then it is symmetrical. As with nature and rocks, folds are rarely symmetrical.
 
3     Folds usually bend vertically. However, there are also other shapes for folds. Overturned folds look as if they are lying on their sides. Geologists have observed tight folds, open folds, folds with smooth bends, and folds with sharp-pointed bends. It is the unique stresses that rock goes through that determine the fold that will be formed.

Paragraphs 4 to 7:
For the complete story with questions: click here for printable



Weekly Reading Books

          Create Weekly Reading Books

Prepare for an entire week at once!


Earth Science
             Earth Science


More Activities, Lesson Plans, and Worksheets


Back to School
Graphic Organizers
Alphabet Worksheets
Sight Words
Math Worksheets
Mazes
50 States

Monthly Themes
January
February
March
April
May
June
July
August
September
October
November
December

Fractions
Place Value
Time and Calendar
Money
Earth Day
Solar System
Analogies
Nouns
Following Directions
Listening
Capitalization
Cursive Writing
Patterns and Sequencing
Dinosaurs
All About Me

Kindergarten
First Grade
Second Grade
Third Grade
Fourth Grade
Fifth Grade
Sixth Grade

Multiplication
Division
Main Idea
Cause and Effect
Measurement
Decimals
Rounding
Order of Operations
Verbs
Community Helpers
Adjectives
Plants
Grammar
Addition and Subtraction
Contractions
Bulletin Board Ideas
Word Searches
Crossword Puzzles
Printable Puzzles

Reading Comprehension
Reading Skills
English Language Arts





Copyright © 2011 edHelper