Dynamic Earth Chp 1 Lesson 4

Question 1

1. Can Wind move soil, sand and rock particles?

2. Can wind act as an agent for erosion?

Answer 1

1yes

2 yes

Question 2

1 What is abrasion?
2 Where does abrasion happen?
3 What can an abraded rock feel like?
4. Does abrasion to a rock change its size?

Answer 2

1 wearing down the layers of rock
2strong winds
3 smooth polished
4 yes

Question 3

1. What is deflation?

2. What does desert pavement look like?

Answer 3

1when wind removes the top layer of sand on rock

2 rocky

Question 4

Is wind physical weathering or chemical weathering?

Answer 4

1 physical

Question 5

1what are dunes?
2how are dunes formed?
3. Where are dunes formed?
4.

Answer 5

1 hills of sand
2 when wind blows sand
3 sandy area

Question 6

1Explain the direction of wind to create a dune and which way the slope faces on a dune.

Answer 6

1 the way it moves creates the slope face

Question 7

1what are loess
2. where can you find them? Why?
3Why are Loess valuable?

Answer 7

1 depoisits of wind-bown sediment
2 far from there source
3 good for farming

Question 8

1. What is a glacier?
2. Where can they be found?
   3HOw do they form?
3. How do glaciers move?
4. What happens when glaciers move?

Answer 8

1 large mass of moving ice
2 poles/alpine areas
3 when it is cold 
4. down a slope
5 then pick up all the rocks

Question 9

1How do glaciers cause erosion?

2. How are glaciers agents of deposition?

Answer 9

1 by moving the rocks

2 when they melt they drop the rocks

Question 10

what is glacial drift?

Answer 10

1 the general direction the glacier moves

Question 11

1What is an alpine glacier?

2what type of landscape do alpine glaciers form?

Answer 11

1 a glacier foung in the mountians

2 mountains

Question 12

An alpine glacier can create the following- what are each?
cirques
arete
horn

Answer 12

cirques? bowlshaped depressions
arete? jagged ridge
horn? peak of a mountains

Question 13

1. What are continental glaciers?

2What type of landscape do Continental glaciers form?

Answer 13

1 thick sheets of ice

2 falt lands

Question 14

1. What does contiental glaceirs do to the landforms?
2. Erosion and deposition from contiental glaciers create Erratics and Kettle Lakes- what are these?How do they each form?

Answer 14

1 drops rocks in formations
Erratics? large boulders
Kettle lakes/chunks of ice that are deposited by a glacier

Question 15

How is the force of gravity an agent of erosion and gravity?

Answer 15

1 it causes the rocks to fall down

Question 16

1WHat is mass movement?

2Why is it important

Answer 16

1 the movement of land

2 shapes the earths surface

Question 17

1 WHat is creep?

2What different things contributes to creep?

Answer 17

1 slow mass movement

2 water lossening soil

Question 18

WHat is more destructive slow mass movement or rapid mass movement?
2. Why?

Answer 18

1 rapid

2 it causes more damage

Question 19

1 What is rock fall?

2 What causes it?

Answer 19

1 rocks falling down

2 to much rock with nothing below it

Question 20

1 What is landslide?

2 What causes it?

Answer 20

1 sudden rspid mass movement

2 floods

Question 21

1 What is mudflow?

2What causes it?

Answer 21

1 wud going doen a hill

2 heavey rains