Evidence for Continental Drift

As you know, Alfred Wegener came up with the theory of continental drift based on evidence he had gathered from different scientific fields. His idea was that all of the continents were once one large landmass and have since moved apart. His evidence came from land features, fossils and climate changes. Since Wegener's time scientists have found a lot more evidence that the continents have moved. Research continental drift and find at least 2 specific examples of evidence that the continents have moved.

Journey to the Center of the Earth

After flying around in the atmosphere, now we are descending into the solid part of the earth. In class, we brainstormed questions about the structure of the earth. Pick one of these questions to research and post your findings:

1. How old is the Earth and how do scientists figure this out?

2. How did the Earth form?

3. How did the oceans form?

4. Why are the oceans salty?

5. Who has been to the deepest part of the ocean and how did they get there?

6. How do scientists think magnetic polar shifts happen?

The Atmosphere

The atmosphere has 4 main layers; the troposphere, the stratosphere, the mesosphere and the thermosphere. These layers are characterized by changes in temperature, but each has different phenomena that occur there. Research one of the layers of the atmosphere and write an interesting fact that you learned about it in your blog comment for this week.

Frogs!!!

This week we will wrap up body systems by dissecting frogs and looking at their various body systems. We will be comparing their organs with our own. Do some research on frogs and share in your comment some interesting facts that you've learned.