Earth's System and History Summative Assessment

Question 1

What conclusion can you draw about layer C

Accepted Answer

It was probably under water at some time., It is probably older than layer F

Question 2

The process that moves weathered sediments from one place to another.

Accepted Answer

Erosion

Question 3

Which of the following are evidence that Pangaea existed?

Accepted Answer

identical plant-animal fossils found on different continents, Mountain ranges that line up on different continents, continent coastlines fit together like a puzzle

Question 4

Sedimentary rock layers on top of other features are thought to be ....

Accepted Answer

younger

Question 5

Convection in the mantle is a primary cause for...

Accepted Answer

movement of tectonic plates

Question 6

Name 2 methods of telling geologic time.

Accepted Answer

relative- index fossils-comparing layers, absolute time- radiometric dating

Question 7

Which layer of the Earth is divided into tectonic plates?

Accepted Answer

lithosphere

Question 8

Name three processes or events that change the shape of the Earth.

Accepted Answer

subduction-cause trenches to form and are long term changes, Earth quakes- faults cause changes, short term, mountain building- plates collide- long term

Question 9

If you find a fossil of a fish in a layer of rock you may conclude that ...

Accepted Answer

the sea once covered this area

Question 10

The following are examples of chemical weathering :

Accepted Answer

carbon dioxide forms carbonic acid and weathers limestone, water weathers rock by dissolving them, oxygen oxidizes rocks-rust

Question 11

Why is the Earth not getting any larger?

Accepted Answer

Sea-floor spreading and subduction occur together

Question 12

The following are examples of mechanical weathering :

Accepted Answer

heating and cooling (outside of the rocks flake off), abrasion-wind driven sand helps shape rocks, roots/trees enter cracks of rocks force rocks to crack open

Question 13

About 250 million years ago...

Accepted Answer

there was a super continent that we call Pangaea

Question 14

Where might you discover sea floor spreading?

Accepted Answer

in the deep ocean between South America and Africa

Question 15

When South America and Africa move apart , what type of plate boundary is forming?

Accepted Answer

Separating (Diverging)

Question 16

Colliding plates were how the _____________ were formed.

Accepted Answer

The Himalayan Mountains

Question 17

Name two mountain ranges in the US that were created by plates colliding.

Accepted Answer

Rocky Mountains, Appalachian Mountains

Question 18

Farthest from the mid ocean ridge you would expect to find...

Accepted Answer

the oldest rocks on the Atlantic Ocean floor

Question 19

1. Convection in the Mantle, 2. heat from the core. 3. heat from core rises/cools and sinks

Accepted Answer

These steps explain transfer of heat energy in the Earth.

Question 20

This is the first step of the freeze thaw cycle

Accepted Answer

rainwater or snow melt collects in cracks in the rocks

Question 21

What is abnormal about this picture and what caused it?

Accepted Answer

layers aren't lined up-fault/earthquake cause it/intrusion

Question 22

When two plates are spreading apart what is being formed?

Accepted Answer

new ocean crust

Question 23

How does erosion help scientists learn more about past geologic events?

Accepted Answer

It shows the relative position of rocks/ fossils for study

Earth's System and History Summative Assessment

Questions 23

Earth's System and History Summative Assessment

Questions 23