Tuesday, February 23, 2010

Homework 7th A and B for Tuesday March 2nd.

Instructions:
1. Find the definition of energy (in the diccionary) and write it in your notebook.
2. Copy in your notebook the types of energy from the blog.

"Energy"

Chemical Energy is energy caused by chemical reactions. A good example is food when it is cooked.
Mechanical Energy is the energy of motion that does the work. An example is the wind as it turns a windmill.
Nuclear Energy is energy stored in the nucleus of an atom — the energy that holds the nucleus together.
Gravitational Energy is energy stored in an object's height. When you ride a bicycle down a steep hill and pick up speed, the gravitational energy is being converted to motion energy.
Electrical Energy is what is stored in a battery, and can be used to power a cell phone or start a car.
Radiant Energy is electromagnetic energy that travels in transverse waves. Radiant energy includes visible light, x-rays, gamma rays and radio waves.
Thermal Energy is energy that is pushed into motion by using heat. An example is a fire in your fireplace.
Motion Energy is energy stored in the movement of objects. The faster they move, the more energy is stored.
Sound is the movement of energy through substances in longitudinal waves.

Wednesday, February 10, 2010

Homework for 7th grade A and B.

Instruction: Copy in the notebook. This homework is for Tuesday February 16th.

"What if my friend smokes?"

I you have friends who smoke, you can help them by encouraging them to quit. Here are some reasons you can mention:
-It will hurt their health.
-It will make their breath smell bad.
-It will turn their teeth yellow.
-It will give them less endurance when running or plating sports.
-It's expensive.
-It's ilegal to buy cigarettes when you're underage.

But people don't like to hear that they're doing something wrong, so your friend might feel a little angry. If that happens, don't push it too much. In time, your friend may realize you are right :)
The longer you smoke, the worse the damage becomes!

Tuesday, February 2, 2010

Homework 7th A and B for tuesday February 9th.

Make an advertisement against smoking. Be creative! (in half cardboard).
For February 9th.