Earth History Global Change

Question 0

What is the law superposition

Answer 0

It was founded by steno and the 1600s relative dating is placing dates on things in relation to each other
rocks tend to be older on the bottom and younger on the top
each rock layer is older than the one above it and younger then the one below it

Question 1

How do scientists use the principle of super position to identify the relative age of surface features or rock layers

Answer 1

Scientist use the principle a superposition to identify the relative age of the surface features a rock layers by identifying where the rocks are located it states each layer is older Dando one above it and younger than the one below it

Question 2

What is the principle of original horizontally

Answer 2

Layers of rock originally lay horizontally when they form

They can be uplifted and turned in other directions

Question 3

What is the principle of crosscutting relationships

Answer 3

In order for intrusion two separate a rock layer the rock layer must have been there already

Question 4

What are you inclusions

Answer 4

Pieces of a Rockback are contained with in another rock or it is included. The rock unit containing the inclusion must be the younger rock

Question 5

Unconformities

Answer 5

Unconformities is a period when deposition stopped erosion removed some rock and deposition resumed
Angular unconformity is when deposition pauses the rocks bet tilted and eroded

Question 6

How do you sciences selecting appropriate method to determine the age of a rock

Answer 6

They used half-lives

Question 7

Identify a technique used by July just to identify the age of events in Earth’s history

Answer 7

They used timescales because the pass is so big and great

Question 8

Explain how global temperature change may affect sea level

Answer 8

When the ice melts sea level increase ice melts when it is hot

Question 9

What are the physical properties to identify rocks

Answer 9

Size of grain shape of grain and pattern of the grain

Question 10

Explain how you Rosian affects the rock cycle

Answer 10

Erosion turns into metamorphic and igneous rocks to sedimentary rocks

Question 11

What elements are most commonly found in minerals

Answer 11

Definite chemical composition this means there are parts of different elements in minerals

Question 12

Describe how igneous rock with a large grain size form on earth

Answer 12

Rocks with large grain size form inside first surface itis called intrusive from

Question 13

Describe how you can use a table to identify the hardness of different materials

Answer 13

The harder the rock the higher the number which is 10 and it is not that hard number is low (1) you can test in the rock is hard by scratching it on glass it makes a scratch hardest level is greater than five

Question 14

How does an igneous rock form intrusive and extrusive

Answer 14

Igneous rocks are formed by the cooling of magma . Intrusive rocks forms inside the volcano extrusive rocks forms on earth surface

Question 15

How does a metamorphic rock

Answer 15

Metamorphic rocks formed from heat and pressure

Question 16

How does a sedimentary rock form

Answer 16

Sedimentary rock for him by weathering and erosion also the process’s of erosion deposition compaction and centimentation

Question 17

How does a landform change due to water and wave action

Answer 17

Water and waves can work together to Everone to soil away and break down the landform water is the most strongest agent of the Erosion

Question 18

How does chemical and physical properties of Earth materials are controlling factors in landform changes

Answer 18

Because they affect erosion that can change life formation

Question 19

How do you scientists use the characteristics of a rock identify the process Through which it is form

Answer 19

They look at different properties for example, shape crystal structure texture etc.

Question 20

Give evidence to support continental drift

Answer 20

Landform evidence fossil evidence of climate evidence

Question 21

Evidence of seafloor spreading

Answer 21

Molten material magnetic stripes drill samples

Question 22

Evidence of plate tectonics

Answer 22

Conversions divergent transform earthquake fault hotspot island chain mid ocean ridge plate tectonics plate boundary valley subduction chance form boundary trench volcano before spreading San Andreas Fault

Question 23

Compare divergence convergence and transform boundaries

Answer 23

Divergent oceanic plates boundary is 12 plates move apart or diverge
Divergent continental plates Boundary went to play spread apart of Rift Valleys
transform boundaries went to place slipped past each other and moving in opposite directions earthquakes occur and faultlines occur
Convergent boundaries went to plates move closer together and subduction occurs. Oceanic continental plates

Convergent ocean ocean plates boundary makes trenches plates collide one going under each other cross is destroyed

Question 24

Give examples of Earth’s features caused by seafloor spreading and plate tectonics

Answer 24

San Andreas Fault Hawaiian Islands Marianna trench Himalaya Mountains Black Sea deep African rift valley

Question 25

Explain changes in the earths at subduction zone

Answer 25

Seduction occurs at a converging oceanic continental plate boundary The crust gets destroyed

Question 26

Describe how island chains are produced by hot spots

Answer 26

Since plates are moving the hotspots does not create only one island it creates a lot of island chains for example the Hawaiian island

Question 27

Explain how different types of volcanic activity reveal is happening in the earths interior

Answer 27

The type of rocks heat and temperature

Question 28

Analyze factors that influence the magnitude and intensity of earthquakes

Answer 28

Transform boundary a the stronger the P waves S wave surface waves

Question 29

What are isotopes

Answer 29

Atoms of the same elements with different atomic weight

Question 30

Absolute dating notes

Answer 30

By comparing the ratio of the parent product to the daughter product you can calculate the number of half-lives that pass

Question 31

Or absolute dating notes

Answer 31

Materials Witg long half-lives are used to date old materials materials with short half-life used to date young materials the age of the earth is determined by the breakdown of different isotopes of uranium

Question 32

Radioactivity notes

Answer 32

Almost all of the elements contained radio active isotopes

the rate at which radioactive elements break down is predictable and specific to different isotopes

Question 33

The right of decay is not affected by

Answer 33

External factors such as temperature heat or pressure

Question 34

Time of decays measure in

Answer 34

Half-life

Question 35

What is a half-life

Answer 35

Hey half-life is the time it takes for the mass of one life of the radio active activity to decay into its daughter product

Question 36

Minerals

Answer 36

Naturally occurring inorganic solid with a crystal structure and a definite chemical composition

Question 37

How to identify minerals

Answer 37

Color streak luster density hardness

Question 38

Rocks

Answer 38

A mixture of minerals rock fragments volcanic glass organic matter or other natural materials rocks are made of one or more minerals

Question 39

Geologist identify rock base on

Answer 39

This size of the grain for example fine course or no visible grain the shape of the green rounded on jaggy in the pattern of the grain on banded or banded

Question 40

What are the three types of rocks

Answer 40

Igneous sedimentary metamorphic

Question 41

What is the rock cycles

Answer 41

A series of processes on Earth’s surface and in the crust and mantle that slowly change rocks from one kind to another

Question 42

What are the agents of the erosion

Answer 42

Waterwinds glaciers and waves

Question 43

How can you determine the density of different minerals

Answer 43

You can determine the density of different minerals by. Picking two minerals up and comparing their weight