8th Grade Test

Question 1

T or f sections on earths crust float on fluid

Answer 1

True

Question 2

T or f magma can flow out of weak parts of crust and form island

Answer 2

True

Question 3

T or f mineral deposits form around folds

Answer 3

False they form around faults

Question 4

Continents positions _____ over time

Answer 4

Change

Question 5

Outermost rigid layer of earth

Answer 5

Lithosphere

Question 6

Mountain chains on ocean floor

Answer 6

Mid ocean ridge

Question 7

Bending of rock bc of stress

Answer 7

Fold

Question 8

Process where one tectonic plate pushes under another

Answer 8

Subduction

Question 9

Large area of flat top rock

Answer 9

Plateau

Question 10

Deep underwater valley

Answer 10

Trench

Question 11

What is a break in earths crust where they move

Answer 11

Fault

Question 12

One tectonic plate touches another

Answer 12

Plate boundary

Question 13

Stress 2 tectonic plates coming together

Answer 13

Compressional

Question 14

Balance of earths crust

Answer 14

Isostasy

Question 15

Mountain formation

Answer 15

Orogenesis

Question 16

2 tectonic plates moving apart

Answer 16

Tensional stress

Question 17

2 tectonic plates sliding past each other

Answer 17

Shearing stress

Question 18

Explain theory of plate tectonics

3 parts

Answer 18

Earths lithosphere is divided into plates
Edges of plates continually change shape
Plates float on mantle and move bc of convection currents in mantl

Question 19

Describe 3 ways ,mountains are formed

Answer 19

Fold, volcanoes, and breaks pushed upwards

Question 20

What evidence did we genre use to support his theory (2)

Answer 20

Fossils in s America and Africa

Continental pieces fit Together like puzzle

Question 21

2 types of deformation in rocks, what happens, what determines where it’ll occur?
______~ bending of ____ layers due to ____ In crust
______~ ______ of crust and ______ of ______ of crust along break
3rd part?

Answer 21

Fols Rock , stress
Fault , breaking, sliding, blocks
Elasticity of rock and cold / heat and pressur

Question 22

Names me describe 3 different types of plate boundaries and what stress happens there

Answer 22

Convergent- compressional stress- plates move together
Divergent- Tensional stress- plates move apart
Transform- shearing stress- plates slide past each other horizontally

Question 23

What divides continents

Answer 23

Ocean

Question 24

Largest land mass?

Answer 24

Asia

Question 25

Permanent change in land mass?

Answer 25

Deformation

Question 26

3 faults?

Answer 26

Normal, reverse, and lateral

Question 27

What gets su ducted

Answer 27

Ocean crust

Question 28

Sea floor spreading question ?

Answer 28

Convection currents

Question 29

Essay- how did God make the earth with formation and deatruxtion of crust?

Answer 29

He used convection currents and tectonic plates and made sure that when crust was being destroyed, new crust was being made

Question 30

T or f more land than water covers the earth

Answer 30

False more water than land covers the earth