Reference no: EM132933802

1.Describe two measurements you need to know to determine the magnitude of an earthquake by using a Richter magnitude chart.

2.The significance of the time period from the beginning of the Ordovician Period to the end of the Devonian Period for Alberta is

-the region that is now Alberta was under a warm, tropical sea for much of the time
-the remains of microscopic sea organisms built up on the sea bed during this time
-the remains of microscopic sea organisms became the building blocks of Alberta's petroleum deposits
-all of the above

3.Fossils in the Burgess Shale are not arranged in an orderly way because

-they were buried over different time periods
-the mud avalanche that buried them caused the fossils to lie in a disorderly fashion
-the shale was composed of large chunks of rock that knocked the fossils into different positions
-movements in Earth's crust moved the fossils after they were formed

4.A shell has dissolved and left a cavity in sandstone. What type of fossil is it?

-actual remains
-cast
-imprint
-mould

5.The calcified shape of a soft-fleshed crinoid is found inside a layer of sandstone. What type of fossil is it?

a.actual remains
b.cast
c. imprint
d. mould