Nitrogen Cycle and
Why are Nitrogen and Phosphorus
Both phosphorus and nitrogen are essential
nutrients for the plants and animals
Form backbone of DNA
Key to energy for living things
Here is a Plant.
The Hydrologic Cycle
With the person next to you
Discuss the question:
What is so important about water?
Come up with as many reasons as you can in a minute!
Process that changes a substance from a liquid to a gas below
Forces that Shape the Earth
Is this constructive or destructive?
This is cool.
Eyjafjallajkull volcano in Iceland.
Say that 10 times really fast.
Recently erupted in April of 2010.
Carried by the atmospheres winds, the
ash travelled th
Have you ever noticed?
That cloudy days are relatively cool
That cloudy nights are relatively warm?
Sunlight hits the earth
& is absorbed.
The surface warms &
re-radiates the heat
a.k.a. IR) back up to
When things shake up a little.
The Great 1906
7.8 magnitude leveled much of the city
Three Types of Seismic Waves
P-wave demonstration using a slinky
S-wave demonstration using a rope
Energy Flows Through
Sunlight energy reaches Earth
into heat energy
All non-living things that exist above the Earths surface
Taken by a weather
WHAT WEVE COVERED SO FAR
A UNIVERSE OF GALAXIES
MILKY WAY IS JUST ONE OF COUNTLESS GALAXIES
SOLAR SYSTEM - TINY PART OF THE MILKY WAY
SCALE OF SOLAR SYSTEM OBJECTS
Earth is a tiny part of our solar system!
Plate Tectonics is a theory that states the Earths crust
is broken into pieces; explains the formation and
movement of Earths plates.
Continental Drift is a hypothesis by Alfred Wegener
that explains that the continents were once joined in a
Carbon Cycle & Oxygen Cycle
Essential element for life
Usually bonded to other
Taken up by plants during
Given off in respiration (CO2)
CO2 is a greenhouse gas
PS the carbon atom
doesnt really look like this
A Few Mo
Read textbook pages 734-738
For each era, write down important
events you read in the text
You need to have:
Precambrian Time: 4 events
Paleozoic Era: 6 events
Mesozoic Era: 7 events
Cenozoic Era: 5 events
Notice how temp
as you increase
altitude for some
into heat energy
All non-living things that exist above the Earths
Law of Superposition
What about the age of the Earth and Rocks?
Layers of rock are deposited
horizontally, like the layers of
the Grand Canyon shown here.
Layers are called strata
The walls of the Grand Canyon have many
different layers o
Take notes on anything in yellow
And cause the oceanic crust to spread
1. Age of Seafloor Rocks
2. Parallel Magnetic Stripes
Radioactive dating used to find the ages of rock samples
from ocean floor.
Geologists found that:
Rocks closer the mid-o
List your observations from the aquarium
Sowhat does this have to do with air
Well get to that in a moment
Air pressure is the
weight of the air on top
Decreases with altitude
Deep Inside the Earth
Where does the heat come from?
Deep inside the Earth!
Radio active decay of elements such as uranium thorium, and
potassium that are inside the Earths mantle and core
Also some leftover heat from Earths accreti