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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

These are a few links which will teach you more about convection, radiation and conduction!:

http://www.youtube.com/watch?v=SYnP4TGOGRY&feature=related

http://www.youtube.com/watch?v=wr8Z4SCETPs

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:

http://www.brainpop.com/science/earthsystem/greenhouseeffect/

© 1999-2011 BrainPOP. All rights reserved.

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:

http://www.brainpop.com/science/earthsystem/earthsatmosphere/

© 1999-2011 BrainPOP. All rights reserved

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