Show:
Ch. 1: How did the fossil get into the rocky outcrop?
Ch.2: What was the environment of the park like in the past?
Ch. 3: What is the order of past environments?
Ch. 4: Why did more rock layers get exposed in Desert Canyon?
100

the remains or impression of a prehistoric creature preserved in rock

fossil

100

Floodplains, deep oceans, shallow oceans, or rivers are all examples of what?

different environments

100

True or False? Newer rock layers form on top of existing rock layers.

True

100

The process of rock being broken down and "washed away" by things like water, wind, plants, and ice.

Erosion

200

a person who studies fossils and rocks to learn about what the environment was like in the past

geologist

200

True or False? Different kinds of sediment mostly form in the same environment.

FALSE - Different forms of sediment form in different environments.

200

True or False? The environments that lower rock layers formed in came later than environments that upper rock layers formed in.

False.

The environments that lower rock layers formed in came EARLIER than environments that upper rock layers formed in.

200
What are 2 factors that affect the amount of erosion that happens in a canyon?

amount of time the river exists, speed of the river

300

a type of rock made of sediment that sinks and builds up in water, compacts under more sediment, and cements over time

sedimentary rock

300
How can there be different types of sedimentary rock in the same place?

Because the environment of that place could have changed over time.

300

What can a geologist infer about a fossil found in a lower rock layer vs. a fossil found in an upper rock layer?

The creature from the lower rock layer came before the creature in the upper rock layer.

OR

The creature from the lower rock layer is older than the creature in the upper rock layer.

(There are other answers!)

300

Complete this sentence:

The faster the river.......

The faster the river........

......the more erosion that happens.

400

How do fossils form?

A creature dies in a watery environment, and layers of sediment build up over time on top of their body. Over many years, the layers of sediment become rock.

400

What was Desert Rocks National Park like in the past? What is your evidence?

Answers can vary.

Example: It used to be a deep ocean because the fossil found there was of a creature who lived in the deep ocean.

400

Make an inference about the layers of sedimentary rock at Desert Rocks National Park.

Answers can vary.

400

Complete this sentence:

The less the a river exists.......

The less time a river exists.......

......the less erosion that happens.