Q3 Review

You find a rock sample with radioactive atoms present.  If 25% of the original radioactive atoms were present, how many half-lives has the rock been around for? (Hint, at Half-Life = 0, you start with 100%)

• zero
• 1
• 2
• 3

Which location is most likely experiencing the greatest wind speeds? 

• Location A
• Location B
• Location C
• Location D

Which geologic event occurred most recently?

• initial opening of the Atlantic Ocean
• formation of the Hudson Highlands
• formation of the Catskill delta
• collision of North America and Africa

The cartoon below is a humorous look at geologic history.  If Early Pleistocene mermaids had existed, their fossil remains would be the same age as fossils of...

• armored fish
• trilobites
• mastodonts
• dinosaurs

The index fossils shown below are the remains of organisms that lived during which geologic era?

• Precambrian
• Cenozoic
• Paleozoic
• Mesozoic

Tiny particles in the atmosphere that allow for condensation..

• Condensation nebula

• Condensation nuclei

• Air masses

• Fronts

During which geologic period did plants and animals first appear in land environments?

• cambrian

• ordovician

• silurian

• devonian

In order for an organism to be used as an index fossil, the organism must have been geographically widespread and must have

• lived on land
• lived in shallow water
• been preserved by volcanic ash
• existed for a geologically short time

When the air temp is equal to the dew point, RH is

• 0%

• 100%

• 50%

• 75%

High pressure systems rotate

• Clockwise and inward

• Counterclockwise and inward

• Clockwise and outward

• Counterclockwise and outward