Show:
Glaciers
Erosion
Relative age
Fossil evidence
Potpourri
100
A land form created when a glacier moves a large boulder and places it in a random location?
What is an erratic.
100
Will soil or gravel erode faster and why?
What is soil because it has a lower density
100
The principle that states the oldest fossils are found at the bottom and the youngest fossils are found at the top.
What is the law of superpostion.
100
You find a palm tree fossil while working in the Gobi Desert. What can you infer
Used to be tropical. Used to get more precipitation
100
What is the absolute age of Ms. K.?
27
200
A ridge of sediment that built up around the edges of a glacier.
What is a moraine.
200
How does slope affect erosion?
steeper slope = more erosion
200
Give an example of your relative age.
answers will vary.
200
The fossil remains of a pine tree are found in Cuba. What can you infer about the climate of the past
It was colder
200
What method do scientists use to determine the absolute age of rocks and fossils?
radiometric dating
300
Holes that are created when ice breaks off a glacier gets covered by sediment and then melts.
What is a kettle.
300
How does velocity affect erosion?
higher velocity = more erosion
300
The principle that states the rock that intrudes on another rock is younger.
What is crosscutting
300
The fossil of a parrot is found in Antarctica. What can you infer about the environment of the past?
It was tropical.
300
Define uniformitarianism
The processes that shaped the Earth in the past are still shaping them today. Bonus: What are these processes?
400
A area beyond a glacier where meltwater deposits sorted sediment.
What is an outwash plain
400
How does temperature affect erosion?
hotter temperatures = more erosion
400
What are the 3 requirements to be an index fossil?
What are widespread, abundant and short lived
400
After digging through sedimentary rock you find igneous rock. What can you infer?
volcano
400
When sediment gets carried away by a river, this is an example of what process?
erosion
500
A snakelike mound that is created as meltwater runs through tunnels in the glacier.
What is an esker.
500
How does precipitation affect erosion?
higher precipitation levels = more erosion
500
If you find an index fossil in Montana and the a similar fossil in Arizona, what can you conclude about the fossils and rocks?
The rocks and fossils are the same age.
500
You find metamorphic rock in the Great Plains. What can you infer?
Mountains
500
When glaciers make erratics, eskers, moraines, outwash plains and kettles, what process was used?
deposition