What scientist came up with the theory of seafloor spreading?
A) Harry hess
B)Alfred Wegner
C) Albert Einstein
D) Alexander graham
100
What was 1 clue that helped prove the contental drift
A) fossils
B)plants
C)animals
D)natural resouces
100
How are faults caused ?
A) moring of plates
B) rocks eroding , moring along the surface
C) rocks breaking , moring along the surface
D) rocks breaking down keeping the surface still
100
What are volcanos ?
A) opeaning in earth surrace that erups hot lava
B) opeaning in earths surface that erups cold water
C) opeaning in earths surface that erups gas
100
What type of volcanic eruptions seem to occur most often "where plates are crunching together"?
A)Seismic Eruption, an earthquake in a volcanic area.
B)caldera
C)none of the above
200
What causes plates to move ?
A) They move around the top of the mantle .
B) Heat
C) Collige with other plates .
D) Water
200
How thick is the lithosphère ?
A) 200 km
B) 100 km
C) 300 km
D) 250 km
200
Which of the following best exsplains earthquakes ?
A) a pocking movement
B) vibrations produced by breaking of rocking
C) plates moving in earths core
D) vibrations caused by tornados
200
What is magma ?
A) the hot molten rock on surface
B) the molten rock beneath the surface
C) an opeaning in the volcano
200
How far below earth's surface earthquake could happen?
A)as far
B)150 km
C) none of the above
300
How is an convection Current formed ?
A) When the earth splits in half .
B)When Rain and hale combine
C)When the earths crust is part with the upper mantle.
D)when hot magma rises and cools
300
True or false the asthnosphere is over the lithosphere ?
A) true B) false
300
Normal faults are caused by ?
A) faults switching the direction
B) rocks on either side of the faults moving past each other
C) fault moving up and down past each other
D) Rock above the fault surface that moves downwards
300
What is a crater?
A) a basin like depression over a vental at the summit of a volcano
B) an ash cloud that forms over the volcano when it erups
C) a big hole in the ground
300
Which continent is part of Eurasia, but, according to theory, was orginally a seperate continent that moved northward into its present position?
A)north america
B)europe
C)africa
400
What caused the contental drift ?
A) they moved slowly to there locations
B) a spell
C) Alfred Wagner pulled them togeather
D) the Water moved them
400
Was pangea one solid continent or made of small islands that somehow fit together?
A) yes. B) no
400
What is a strike and slip fault ?
A) ground pupture with good generates vibratoins or waves
B) relatoin of ground rock
C) ground eruptoins which cause vibratoins
D) rocks on either side of the fault moving past each other
400
What are the three basic ctgiesag volcanos?
A) exslosive,non-explosive,and shielf
B)start volcanos,exsplosive,non-exsplosive
C)cinder cones,strato volcano,shield volcano
400
Name the 3 types of boundaries between lithospheric plates?
A) divergent boundary ,convergent boundary,transform plate boundary
B)Home boundery,tidal forces,contental collusion
C) none of the above
500
When did pangea break apart ?
A) 10,000 years ago
B) 10,000,000 years ago
C) 200,000,000 years ago
D) 570,000,000 years ago
500
if it was one solid continent was it all formed at once by molten rock coming up from the earth?
A) yes b) no
500
What is liquefactoin ?
A) liquado making moisture which cause the earthquake
B) set soil that can be shacky during an earthquake
C) rocky soil that shakes the ground
D) dry soil that can be strong in an earthquake
500
How long sence a volcano has erupted is it conciterd a active volcano?
A) 10,000
B) 10 days
C) one year
D) 1 year
500
How can ocean basins change in size?
A) seafloor spreading and subductoin
B) get larger
C) lava