Tuesday, December 13, 2011
Heat Transfer
Heat is transferred in 3 ways;
- Convection
- Radiation
- Conduction
Convection: When heat is transferred through liquids or gas.
Radiation: Its the heat you feel.
Conduction: When heat is transferred by direct contact or touching something else.
As Sun light hits the earth different things happen to it before we recieve it.
- White clouds reflect it
- Greenhouse gases absorb it
- The ground absorbs it but reflects a bit of it
- The sea absorbs it
- Some particles reflect it or absorb it
- The Earth recives only 70% of heat and 30% is reflected
http://www.youtube.com/watch?v=SYnP4TGOGRY&feature=related
http://www.youtube.com/watch?v=wr8Z4SCETPs
Sunday, December 11, 2011
Tips On How to be Eco- Friendly!
- Be smart like this dog and turn off the lights when leaving a room
- Turn of any electrical devices when you're not using them ( like this smart kitty)
- Instead of driving, walk or bike to places that are close to you
- Use re- usable water bottles instead of buying plastic water bottles
- Ask your parents to buy Eco- friendly light bulbs
- Throw away your trash in the trash can and DO NOT LITTER!!
Why We Should GO GREEN!
- We should turn the lights off when we leave a room because in order to have electricity, factories burn fossil fuels ( gas) which releases pollution into the air. This causes global warming! So, always turn off lights when you're not using them!
- Instead of driving, you should walk or bike to places that are near you because cars run on gases that release CO2 into the atmosphere ( which pollutes it).
- You should use re-useable water bottles because they reduce the use of fossil fuels which are used to make plastic water bottles.
Greenhouse Effect
The greenhouse effect is a process by which heat is absorbed by the atmosphere greenhouse and is sent back in all directions. As a result, the average surface temperature is hotter than it would if sunlight was the only thing on Earth. So basically, we are trapping ourselves in a planet of heat by continueing what we are doing to our planet!
Learn more about the Greenhouse Effect with Tim & Moby:
The Atmosphere :)
The atmosphere is a layer of air the surrounds the Earth and protects it. It is made up of different gases and particles. If it weren't for the atmosphere, we wouldn't be able to breathe!
Learn more about the atmosphere from this BrainPOP video:
Here's a very catchy song from YouTube! about the atmosphere... IT WILL GET STUCK IN YOUR HEAD BECAUSE OF ITS AWESOMENESS!
http://www.youtube.com/watch?v=dQPyNY2WIdw
Saturday, December 10, 2011
The Ozone Layer
Do you guys know that by using chemicals we are destroying the ozone?
The Ozone is a layer of the atmosphere that protects the Earth from harmful sunlight. We are using too much of a chemical called CFC which is creating a hole in the ozone. Without the ozone do you know what would happen to us? Our children and the next generation would get skin cancer and sunburn. I am sure none of us want a future like that for our children.
To learn more about the Ozone Layer, watch this video from BrainPOP
http://www.brainpop.com/science/earthsystem/ozonelayer/
The Ozone is a layer of the atmosphere that protects the Earth from harmful sunlight. We are using too much of a chemical called CFC which is creating a hole in the ozone. Without the ozone do you know what would happen to us? Our children and the next generation would get skin cancer and sunburn. I am sure none of us want a future like that for our children.
http://www.brainpop.com/science/earthsystem/ozonelayer/
Wednesday, December 7, 2011
Effects of Global Warming!
Now, while going through our website, what have you learned? Think of this, when you're like about 20 (not sure) what type of earth do you want? A dirty one or one that is filled with nature? Think about it.
Water Levels: As the temperatures warm, the oceans will get bigger and ice will melt into the oceans.
Habitats: Global warming will cause the endangering of animals and plants by changing their habitats ( like some fishes in the sea).
Health: Heat- related deaths from diseases like malaria could happen more through warmer temperatures.
Water Levels: As the temperatures warm, the oceans will get bigger and ice will melt into the oceans.
Habitats: Global warming will cause the endangering of animals and plants by changing their habitats ( like some fishes in the sea).
Health: Heat- related deaths from diseases like malaria could happen more through warmer temperatures.
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