Igneous Rocks

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.
Turn in HW
The Global Village
• If the world’s 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
Welcome to Science 11/2
• Observe the pictures below. On your paper, list
as many similarities as you can about the
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
II. 90% of Earth’s 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
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
IV. Igneous Rock Formations
• Intrusive Rock- magma that has cooled
beneath Earth’s surface.
• Volcanic necks, plutons, batholiths
• volcanic neck
V. Igneous Rock Formations
• Extrusive Rock- forms from the cooling of lava
on Earth’s surface
• Why are these rocks important?
• This is a major process responsible for
building new crust.
Assignment: Acrostic Poem
• Your assignment for tonight is to create an
acrostic poem for the word igneous. Here is an
Related flashcards
Social groups

28 Cards

Social groups

34 Cards

User interfaces

40 Cards

Chess engines

41 Cards

Create flashcards