8th Grade Test Flashcards Preview

Science > 8th Grade Test > Flashcards

Flashcards in 8th Grade Test Deck (30)
Loading flashcards...
1

T or f sections on earths crust float on fluid

True

2

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

True

3

T or f mineral deposits form around folds

False they form around faults

4

Continents positions _____ over time

Change

5

Outermost rigid layer of earth

Lithosphere

6

Mountain chains on ocean floor

Mid ocean ridge

7

Bending of rock bc of stress

Fold

8

Process where one tectonic plate pushes under another


Subduction

9

Large area of flat top rock

Plateau

10

Deep underwater valley

Trench

11

What is a break in earths crust where they move

Fault

12

One tectonic plate touches another

Plate boundary

13

Stress 2 tectonic plates coming together

Compressional

14

Balance of earths crust

Isostasy

15

Mountain formation

Orogenesis

16

2 tectonic plates moving apart

Tensional stress

17

2 tectonic plates sliding past each other

Shearing stress

18

Explain theory of plate tectonics
(3 parts)

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

Describe 3 ways ,mountains are formed

Fold, volcanoes, and breaks pushed upwards

20

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

Fossils in s America and Africa
Continental pieces fit Together like puzzle

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?

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

22

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

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

23

What divides continents

Ocean

24

Largest land mass?

Asia

25

Permanent change in land mass?

Deformation

26

3 faults?

Normal, reverse, and lateral

27

What gets su ducted

Ocean crust

28

Sea floor spreading question ?

Convection currents

29

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

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

30

T or f more land than water covers the earth

False more water than land covers the earth