the theory of how earth's continents move over it's surface
What is continental drift?
100
the downhill movement of rock and soil because of gravity.
What is mass movement?
100
inner core, outer core, mantle and crust
What are the layers of the earth?
100
the lack of this is the reason footprints would last for hundreds of years on the moon
What is erosion from wind and water
200
mountain formed by lava and ash
volcano
200
the process of dropping or depositing sediment in a new location
What is deposition?
200
process of breaking rock into silt, sand, clay and other tiny pieces
weathering
200
what the outer core of the earth is made of
What is molten iron?
200
These show what kinds of organisms (living things) once lived on the Earth and show how Earth's surface was once different from what it is today
What are fossils?
300
molten rock from the earth's mantle
What is magma
300
rigid blocks of crust and upper mantle rock
What are plates?
300
the remains of trace past life found in some rocks
What are fossils?
300
the layer that magma seen in volcanoes comes from
What is the mantle?
300
an area in the Pacific Ocean where there are many volcanoes formed at plate boundries
What is the ring of fire?
400
shaking of the ground caused by the sudden release of energy in the earth's crust
What is an earthquake?
400
the process of moving sediment from one place to another
What is erosion?
400
the Atlantic Ocean is getting larger
What is the result of the North American and European plates moving away from each other?
400
1- When continental plates collide
2- When continental and oceanic plates collide
3- When pressure from the boundries of plates push blocks of rock upward
4- When plates pull apart and magma bubbles up between the gaps
What are ways mountains are formed?
400
This mountain range in the Atlantic Ocean is formed by the magma building up along the cracks of the separating North American and Eurasian plates
What is the Mid-Atlantic Ridge?
500
places where the earth's crust move
What is faults?
500
theory that all the earth's continents were once joined together in a supercontinent
What is pangea?
500
1- Acid rain
2- Fast flowing rivers
3- Ocean waves
4- Frozen water in cracks
(What are these all examples of?)
What are ways that water weather rock?
500
the reason that the inner core (though the hottest layer) is solid