HAPPY FRIDAY!!!11/02/2012

1. Take out your graphic organizer on Sandy from last class.

2. Look over your notes – are you an expert on your topic?

3. Begin thinking about the most effective/interesting way to teach your jigsaw groups about your topic.

4. When the bell rings & Ms. K takes attendance, get back into your expert groups.

DO NOW!

Daily Agenda

1. Expert groups (15 minutes)2. Jigsaw groups (30 minutes)3. Convection, conduction & radiation

DONT’S• Walk around the

room• Bother other

groups• Be off task!• Be negative• Throw things

DO’S

- Talk QUIETLY to your partners

- Stay at your table

- On Task

- Fill in your graphic organizer

- Respect your group members

REMEMBER – YOU ARE RESPONSIBLE FOR TEACHING OTHERS ABOUT YOUR TOPIC!

ACTIVATORIn 3 minutes,

brainstorm all the ways you can pop

popcorn.

ACTIVATORToday, we are going to use popcorn to explain

the different ways heat is transferred on

earth.

Did you know…• Thermal energy carried by ocean

currents has a strong influence on climates around the world

• Areas located near oceans tend to have more moderate temperatures than areas further inland.– Ex: In December, it’s colder in Charlotte than in the OBX.

• This is because oceans hold more thermal energy.

So what the heck are convection, conduction &

radiation and what do they have to do

with weather?

• Changes in weather involve air movements, formation of clouds & precipitation.

• ENERGY from the sun makes these things happen!!!

Conduction• The transfer of heat from one place to another– Ex: Touching a hot pan and burning yourself,

cooking popcorn over a stove (the heat moves from the pan to the cooking oil to the popcorn)

Convection• Heat is transferred by the movement of mass

from one place to another.– Ex: Heat gained from conduction or radiation from

the sun moves around the earth by convection, but the heating is not even; using a popcorn popper to make popcorn the hot air transfers heat to the cooler kernels, making them pop.

Radiation

• When the sun heats the earth, the earth gets warmer in that location and re-radiates the heat into the atmosphere, making it doubly warm.– Ex: Using a microwave to make popcorn, the

kernels are heated by the radiation in the microwave. As the kernels heat up, they transfer heat energy to the kernels around them, making it doubly warm.