Earth Science 6th Grade Geologic History Unit 3

Trace fossils are recognized as evidence of what pre-existing life?

• animals

• plants

• plants and animals

• neither plants nor animals

Which process is responsible for compressing successive strata in the earth?

• deposition

• faulting

• folding

• erosion

Which process is responsible for cracks in successive strata in the earth?

• deposition

• faulting

• folding

• erosion

Why can the geologic record be analyzed by looking at different rock layers?

• All layers are the same age.

• The layers have different layers with the youngest on top.

• The layers have different layers with the oldest on top.

• The layers have different ages with the youngest on bottom.

What can be used to determine the relative age of two rocks?

• vertical position

• the presence of unconformities

• radioactive dating of each layer

• relative age cannot be determined

Which example is classified as a body fossil?

• footprint

• a worm trail

• ancient vertebra

• fossilized bird droppings

What is an example of a trace fossil?

• footprints

• bones

• eggs

• teeth

Which type of fossils are used to identify specific time periods?

• trace fossils

• body fossils

• index fossils

• all fossils

Which example is a trait of an index fossil?

• resembles a living species

• found in limited areas

• fount in limited time spans

• a particular kind of organism

Which series of words describes lengths of geological time from shortest to longest?

• eon < era < period

• era < period < eon

• period < era < eon

• era < eon < period