Transcript grade 5 presentation Kalli, iona , Anica , Claire

CLIMATE CHANGE
OUCH!
LIGHT
The sun shines out light this light goes to the earth.
A part of the light that goes to the earth stays at the earth and turns into heat.
Some of that heat made at the earth goes back into space.
Light
Heat
The carbon dioxide in the air acts like glass and traps the heat on earth.
Heat is stuck
we burn fossil fuels to make energy. When we burn fossil fuels we produce more and more
Green House Gases. Green house gasses ,such as carbon dioxide, trap some of the heat the sun
produces. We are making more green house gasses and trapping more and more heat.
Every day!!!!!
This is what is causing
CLIMAT Change!!!!!!
SO BASICALLY...
WHY?
Poor trees!
Ok!
LIMATE CHANGE CONSEQUENCES
Artic glaciers are
melting
Extreme weather will
the new normal
Coral reefs are dying
Temperatures are ris
Sea levels are rising
GLACIERS IN SWITZERLAND ARE MELTING!!!!!!!
•
A couple of weeks ago we went and visited the Stein Glacier in Switzerland. This is what we saw.
HOW ARE LAND GLACIERS MADE?
•
In cold places, like the tops of mountains, snow slowly builds up into large piles. The
bottom layer slowly gets compressed (or pushed down) and turned into ice. More snow
builds up and more and more ice is made. The ice at the bottom slowly melts and gets
turned into slush. The whole ice pile slowly beings to slide about 2cm a year and grows
about 4cm a year as well. Then you’ve got your self a glacier!
•
But sadly, because of Global Warming and Climate Change, Glaciers all over the
world are melting FAST.
WHAT DOES A GLACIER DO? WHY ARE THEY SO COOL?
•
A glacier is an amazing natural element. It is a true example of how
strong the 4 elements are. (The 4 elements are fire, wind, water, and
earth) The power of a glacier can make a valley and even a new
landscape.
•
Stage 1: The first change that occurs in a glacier is the plucking and picking away of
boulders and rocks as the glacier moves down a mountain. It does this with the melting
water. The ice melts during the day and runs into crakes in the mountain, during the
night the water freezes and expands (gets bigger). Making the crakes in the mountain
bigger. During the day more water runs into the cracks and during the night the cracks in
the mountain get bigger and bigger, until large chunks/boulders split from the
earth/mountain and get slowly pulled down the valley with/inside the glacier.
THE SECOND STAGE OF GLACIERS AND WHY THEY ARE SO
COOOOOL!!!!!
•
Stage 2: As the boulders get dragged down the mountain, they scrape and scratch along
the surface of the mountain, smoothing or scratching the rocky surface of the mountain.
So, the glacier sort of acts like one giant piece of sand paper working its way down the
valley.
•
When the glacier begins to melt large boulders are left behind. Small rocks and gravel
that were pushed along in front or at the sides are left as well, these piles of sediment are
called terminal moraine. This all gives us proof that a glacier once covered this area.
•
This affect glaciers have on the landscape is pretty AWSOME, and
shows how amazingly strong and powerful glaciers are.
OUR TRIP TO THE STEIN GLACIER!
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When the grade 8 went to visit the Stein Glacier last year, they said they were able to
walk on the glacier. This year we were not allowed to because of the increase In
Crevasses (big cracks in the ice) and because the glaciers from had melted and changed
so much from the year before.
•
We recorded the amount of water that was melting on the glacier and the amount of
streams there were, and lets just say that the Glacier is melting a lot every day.
•
Where we were standing, the Stein Glacier once covered over 20 meters higher over our
heads, now all remains is a lake from the amount water that is melting off the glacier. All
in the time of 20 years.
WHAT IS THE PROOF THAT THE STEIN GLACIER WAS BIGGER?
•
We could see piles of terminal moraine (the sediment carried with glacier).
•
We could see scraped and smoothed rocks that had been form and changed due to
glaciers moving through the valley.
•
We could also see large boulders in random places.
An example of a
grounded boulder.
An example of a smoothed
and cut rock.
An example of Terminal Moraine
HELP STOP CLIMATE CHANGE AND SAVE YOUR FUTURE
WORLD!!!!!
The End  I hope you enjoyed our presentation.