Revision (The video tape- Fundamental principles of geology)
1. Transform words in brackets into their correct grammatical forms required by the context:
So, it is called fossil _____________ (success) or sometimes it is called _________ (fauna) and floral succession. You see, ________ (life) forms have changed so much over the years, groups of fossils from different time periods ________ (be) different from one another. We often find fossils in _______ (sediment) rock. So, it makes sense that ________ (old) stratum of rocks will have older fossils in ________ (they). The principle of superposition _______ (say), that if the rocks _____________ (be) undisturbed, the oldest layers of rock should be on the bottom too. If we _______________ (know) the age of the rocks, we can figure out how ________ (old) the fossils in the rocks are. ____________ (conversion), if we know the age of fossils in the rocks, we can figure out how old the rocks _____________ (be).
DISCUSSION (R.P – 2.1)
TASK 1
Imagine that you were living beings. You died, what must happen to your bodies to form fossils?
TASK 2
You are scientists trying to determine the age of the Earth on the basis of what.
COMMUNICATIVE FORMULAS
· No doubt / undoubtedly
· I think / I guess
· My impression is that
· My feeling is that
· One believes that
· I’m afraid I disagree with you
· I entirely agree with you
· To my regret
· Could you explain
· It’s of great value / no value
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