Welcome to Science 11/2

1
Welcome to Science 11/2

• Get your HW out. You will be working with a
  partner to answer three questions that you will
  find in a book about rocks. You have 10 minutes
  to complete this.

2
Turn in HW The Global Village

• If the worlds pop. was 100 people with all of
  the existing human ratios remaining the same, the
  village would include
• 60 Asians, 12 Europeans, 9 Latin
  Americans, 5 N. Americans, 1
  Oceanian, 13 Africans
• 50 female/50 male, 80 nonwhite/20 white
• 20 people would earn 89 of the wealth
• 25 would live in substandard housing
• 17 would be unable to read
• 13 would suffer from malnutrition
• 1 would die within the year
• 2 would give birth within the year
• 2 would have a college education
• 4 would have a computer

3
Welcome to Science 11/2

• Observe the pictures below. On your paper, list
  as many similarities as you can about the
  pictures.

4
I. Classifying Rocks

• Observe the rock on your desk. On your paper,
  list as many descriptions of the rock as you can.
• When classifying rocks, what 3 characteristics of
  rocks do geologists study?
• 1. Mineral Composition (what the rock is made of)
• 2. Color
• 3. Texture

5
II. 90 of Earths crust is made of Igneous
Rocks. Why?

• Igneous- comes from the Latin word for fire
• Origin- born from the cooling and hardening of
  magma lava

6
III. Composition Texture

• The type of igneous rock that forms depends on
  what it is made of and how fast it cools.
• Slow cooling magma/lava coarse,rough text.
• Fast cooling magma/lava smoother, text.
• Slowest 2nd Slowest
  Fastest

7
IV. Igneous Rock Formations

• Intrusive Rock- magma that has cooled beneath
  Earths surface.
• Volcanic necks, plutons, batholiths
• volcanic neck

8
V. Igneous Rock Formations

• Extrusive Rock- forms from the cooling of lava on
  Earths surface
• Why are these rocks important?
• This is a major process responsible for building
  new crust.

9
Assignment Acrostic Poem

• Your assignment for tonight is to create an
  acrostic poem for the word igneous. Here is an
  example.