Earth's History PASS Review

What do we call traces or remains of living things from long ago?

• fossils
• history
• trace fossils
• fossil fuels

What type of fossil forms when minerals soak into the remains and harden over time, “Turn to stone?”

• trace fossils
• petrified fossils
• original remains
• mold and cast

What type of fossil shows evidence of an animal’s presence in a given location such as footprints, trails, animal   holes?

• trace fossil
• original remains
• carbon film
•  mold and cast

What type of fossil forms when dead plants or animals are squeeze between layers of mud or clay until only an   image is left on the rock.

• carbon film
• mold and cast
• trace fossils
• original remains

What type of fossil forms when a visible shape that was left after an animal or plant was buried in sediment and then decayed away? Later this is filled with sand and hardened into stone leaving an exact impression of the animal.

• mold and cast
• carbon film
• petrified fossils
• trace fossils

What do we call a tubular shaped sample from Greenland or the Antarctic that helps scientists learn more about   the Earth’s atmosphere and oxygen levels in the past?

• ice core
• tree rings
• index
• relative age

What do you call the comparison of one rock layer to known rock layers?

• relative age
• absolute age
• index
• ice core

What type of fossil was very common, lived in many areas, and existed only during specific spans of time?

• carbon film
• trace fossil
• index fossil
• petrified fossil

The amount of time since the rock was formed. It’s chronological age.   

• relative age
• index age
• absolute age
• carbon date

Which layer have been folded?

• Layers B and C
• Layer's G and F
• Layer A
• Layer X, Y