Download Do Now

3.1 Do Now
1. Where do rocks come from?
2. How are rocks formed?
3. How are rocks classified?
4. Brainstorm as many types of cycles you
possibly can.
Rocks & Rock Cycle
Objective
TSW explain the formation of the 3 types of
rocks by a jig saw activity.
EQ: How are the three types of rocks related?
Homework
Find a rock and determine its classification.
Bring the rock to class tomorrow.
ROCKS
A rock is a naturally occurring solid mass of
minerals.
ROCKS
• There are 3
different types
of rocks.
• Rocks are
classified
based on the
way that they
form.
Igneous rocks
Are made from cooled-down lava
•
Hints that you are seeing an igneous rock:
1.
Bubbles
2.
Glassy appearance
3.
Big grains of minerals
•
There are two types of igenous rock:
–
Intrusive – when magma hardens beneath Earth’s surface
–
Extrusive – when lava hardens
Bubbles
Glassy Appearance
Big Grains
Metamorphic rocks
•
Metamorphic rocks are made when a rock
changes due to heat or pressure
Hints that you are seeing a metamorphic rock:
1. Bending layers
2. Squished Grains
Bending Layers
Squished Grains
Sedimentary rocks
•
Sedimentary rocks are made of sediments
(particles) that build up in layers, usually at
the bottom of a river or lake.
Hints that you are seeing a sedimentary rock:
1. Flat layers
2. Mix of particle size
Flat Layers
Mix of Particle Size
Quick Check
try to identify the correct type
of rock for each of the following
pictures
Sample 1
Sample 2
Sample 3
Answers
1. Sedimentary (mix of particle size)
2. Igneous (bubbles)
3. Metamorphic (bending layers)
How did you do???
WHAT
TYPE
OF
ROCK?
WHAT
TYPE
OF ROCK?
This rock was formed by the
compaction and cementation of
sediment
WHAT
TYPE
OF ROCK?
This rock was formed by melting
and cooling of magma.
WHAT
TYPE
OF ROCK?
This rock was formed by heat and
pressure deep within the Earth.
WHAT
TYPE
OF ROCK?
WHAT
TYPE
OF ROCK?
WHAT
TYPE
OF ROCK?
This type of rock is found near
volcanoes.
WHAT
TYPE
OF ROCK?
This type of rock is found deep
within the Earth.
WHAT
TYPE
OF ROCK?
This type of rock is much like our
ice cream, it starts as a liquid and
then cools into a solid.
WHAT
TYPE
OF ROCK?
This type of rock is much like our
sandwich. It is made of many layers
stacked on top of each other.
WHAT
TYPE
OF ROCK?
This type of rock is like our cake. It
is baked but not melted.
WHAT
TYPE
OF ROCK?
This type of rock can be intrusive or
extrusive.
Rock Cycle
The rock cycle is a model that describes the formation,
breakdown, and reformation of a rock
Exit Ticket
Write one sentence summarizing your tree
map.