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Flashcards in 8th Grade Test Deck (30)
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1
Q

T or f sections on earths crust float on fluid

A

True

2
Q

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

A

True

3
Q

T or f mineral deposits form around folds

A

False they form around faults

4
Q

Continents positions _____ over time

A

Change

5
Q

Outermost rigid layer of earth

A

Lithosphere

6
Q

Mountain chains on ocean floor

A

Mid ocean ridge

7
Q

Bending of rock bc of stress

A

Fold

8
Q

Process where one tectonic plate pushes under another

A

Subduction

9
Q

Large area of flat top rock

A

Plateau

10
Q

Deep underwater valley

A

Trench

11
Q

What is a break in earths crust where they move

A

Fault

12
Q

One tectonic plate touches another

A

Plate boundary

13
Q

Stress 2 tectonic plates coming together

A

Compressional

14
Q

Balance of earths crust

A

Isostasy

15
Q

Mountain formation

A

Orogenesis

16
Q

2 tectonic plates moving apart

A

Tensional stress

17
Q

2 tectonic plates sliding past each other

A

Shearing stress

18
Q

Explain theory of plate tectonics

3 parts

A

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

19
Q

Describe 3 ways ,mountains are formed

A

Fold, volcanoes, and breaks pushed upwards

20
Q

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

A

Fossils in s America and Africa

Continental pieces fit Together like puzzle

21
Q

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?

A

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

22
Q

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

A

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

23
Q

What divides continents

A

Ocean

24
Q

Largest land mass?

A

Asia

25
Q

Permanent change in land mass?

A

Deformation

26
Q

3 faults?

A

Normal, reverse, and lateral

27
Q

What gets su ducted

A

Ocean crust

28
Q

Sea floor spreading question ?

A

Convection currents

29
Q

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

A

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

30
Q

T or f more land than water covers the earth

A

False more water than land covers the earth