Purposeful Design Earth and Space Science 1.4

Question 1

What is a seismic wave?

Accepted Answer

a wave of energy that travels through the earth

Question 2

What are the three major sections of the earth?

Accepted Answer

crust, Core, mantle

Question 3

S Wave

Accepted Answer

The seismic wave that moves only through solids

Question 4

What is the first layer of the oceanic crust?

Accepted Answer

basalt based lavas

Question 5

Describe the inner core.

Accepted Answer

solid, made of iron nickel alloy, where P waves speed up

Question 6

Describe the outer core.

Accepted Answer

liquid surrounding another layer, cannot transmit or conduct S waves, made of iron and sulfer

Question 7

Describe the transition zone in the mantle.

Accepted Answer

less flexible

Question 8

What is the continenatal crust?

Accepted Answer

The crust on which the continents rest, the layer on which we stand

Question 9

What makes up the third layer of the oceanic crust?

Accepted Answer

dikes of gabbro or basalt

Question 10

What is the outer core?

Accepted Answer

The liquid layer of the earth's core that surrounds the inner core

Question 11

P waves

Accepted Answer

The fastest seismic wave, which travels through solids, liquids, and gases

Question 12

That is the lithosphere?

Accepted Answer

the rigid outer part of the eath, consisting of the crust and upper mantle

Question 13

What is the mantle?

Accepted Answer

earth's interior extending from the outer core to the bottom of the crust

Question 14

What is the oceanic crust?

Accepted Answer

The crust beneath the oceans

Question 15

What are indirect observations?

Accepted Answer

can only be inferred with less than five senses, the only way that the earth's layers can be explained

Question 16

What is the second layer of the oceanic crust?

Accepted Answer

sheeted dikes for lava flow

Question 17

What is the magnetosphere?

Accepted Answer

The area surrounding the earth influenced by the earths magnetic field

Question 18

What are the benefits of the magnetic field around the earth?

Accepted Answer

Shield the earth from solar winds, makes a compass possible, creates the northen lights

Question 19

How are seismic waves used to determine the features of the core?

Accepted Answer

speed and behavior of S and P waves

Question 20

What are three regions of the continental crust?

Accepted Answer

fold belts, sedimentary basins, stable land masses

Question 21

What is the crust?

Accepted Answer

The layer on which we stand, The hard, thin outer later of the earth

Question 22

What is the primary rock in the oceanic crust?

Accepted Answer

basalt

Question 23

How does the core generate a magnetic field?

Accepted Answer

currents produces electrical currents and then magnetic currents, magnetic currents produce a magnetosphere, Heat keeps currents of metal flowing through the outer core

Question 24

Where is the inner core of the earth located?

Accepted Answer

The solid center of the earth

Question 25

Describe the lower mantle

Accepted Answer

hot, flexible, under great pressure

Question 26

What is the most common component of the continental crust?

Accepted Answer

granite

Question 27

What are direct observations?

Accepted Answer

can be perceived with all five senses, can be seen

Question 28

Describe the lithosphere.

Accepted Answer

outer layer of the earth, rides on the asthenosphere, stiff upper layer of the mantle

Question 29

Where is the core of the earth located?

Accepted Answer

The central portion of the earth

Question 30

What is a convection current?

Accepted Answer

circular movement of warmer to cooler areas and cooler to warmer areas

Question 31

What is the Moho?

Accepted Answer

the boundary between the mantle and the crust

Question 32

What is the asthenosphere?

Accepted Answer

the layer of the upper mantle made of low density rock that is semiplastic

Question 33

Describe the upper mantle.

Accepted Answer

solid rock

Purposeful Design Earth and Space Science 1.4

Questions 33

Purposeful Design Earth and Space Science 1.4

Questions 33