DO NOW! HAPPY THURSDAY!!!

September 27, 2012

Quiz Debrief:1. How do you think you did on Tuesday’s quiz?2. If you don’t think you did well, what can you do to

make sure you do AWESOME next time?3. If you think you did well, what made you successful?Quick Review:4. When an oceanic plate collides with another oceanic

plate, which plate sinks?5. Continental-Continental, Continental-Oceanic and

Oceanic-Oceanic are all types of _________ boundaries.

LEQ #4

Why are trees, volcanoes and ice

key to our understanding of earth’s history?

Let’s start with volcanoes…

Get ready for your mind to be…BLOWN!

The Earth actually gets COLDER after big volcanic eruptions!

How do volcanic eruptions effect the

Earth’s temp? 1. Dust, ash,

glass, and rock are released into the air during a volcanic eruption.

2. These things block the sun from reaching earth!

Clouds of ash can cover entire

continents!

In 2010, the Icelandic volcano Eyjafjallajokull erupted, spewing thousands of tons of ash into the air. 95,000 European flights were cancelled as a result of the eruption!

What information do Ice Cores & Tree Rings tell us?

-Tell us how the CLIMATE has changed over

time

Ice core- a sample of ice and snow that have built up over thousands of years

-tell the amount of gasses in Earth’s atmosphere over time.

Why do we care about ice?

What do ice cores tell us about the climate?

Black or brown coloring- VOLCANIC ERUPTION (color caused by the ash)

Yellowish color-Pollution in the air

Bubbles- Carbon Dioxide (CO2) is in the air (lots of bubbles means that is was HOT!)

Why do we care about trees?

Tree Rings: tell the amount of rain over time-Big Rings- A LOT OF RAIN -Skinny Rings- DROUGHTS

Why do we care about trees?

Tree Rings-One ring= one year *Youngest- on the outside *Oldest- on the inside

STATION TIME! -Groups of three -3 stations:

1. Tree Ring2. Ice Core3. Index Fossils

-At each station you will answer the questions on the bottom of your notes.

-You will have 8 minutes at each station before Ms. K will say ROTATE!

DONT’S-Walk around the

room-Move before Ms. K

tells you to-Mess with the

materials-talk to other groups-be off task!-throw things

DO’S-Remain at your

group- TALKING TO YOUR

2 PARTNERS- On Task - Answer all

questions fully- Respect the

classroom and materials