Science Vocab Cards Flashcards

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1
Q

Pangaea

A

Continents were once joined together in a single super continent named Pangaea.

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2
Q

Continental Drift

A

A hypothesis that Wegener proposed

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3
Q

Mid-ocean ridges

A

Vast mountain ranges deep below the ocean’s surface called mid-ocean ridge

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4
Q

Ocean trenches

A

Deep underwater troughs on the seafloor

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5
Q

Seafloor spreading

A

The process by which new oceanic crust continuously forms along mid-ocean ridges and is destroyed at ocean trenches

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6
Q

Magma

A

The rock below the seafloor becomes molten. Molten rock below Earth’s surface is called magma

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7
Q

Lava

A

When Magma erupts onto Earth’s surface it is called lava

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8
Q

Plate tectonics

A

A theory that states that Earth’s surface is made of rigid slabs of rock, or plates, that move with respect to each other

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9
Q

Convergent boundaries

A

When two plates move toward each other

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10
Q

Divergent boundaries

A

When two plates move apart from each other

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11
Q

Transform boundaries

A

When plates slide horizontally past eachother

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12
Q

Subduction

A

The process that occurs when one tectonic plate moves under another tectonic plate

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13
Q

Fault

A

A crack or a fracture in Earth’s lithosphere along which movement occurs

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14
Q

Volcano

A

A vent in Earth’s crust through which molten rock flows

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15
Q

Volcanic arc

A

A curved line of volcanoes that forms parallel to plate boundary

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16
Q

Earthquake

A

Vibrations caused by the rupture and sudden movement of rocks along a break or a crack in Earth’s crust

17
Q

Fault zone

A

An area of many fractured pieces of crust along a large fault

18
Q

Landslide

A

Rapid, downhill movement of soil, loose rocks, and boundaries

19
Q

Tsunami

A

A wave that forms when an ocean disturbance suddenly moves a large volume of water

20
Q

Impact craters

A

A round depression formed on the surface of a planet, moon, or other space object by the impact of a meteorite

21
Q

Weathering

A

The mechanical and chemical processes that change Earth’s surface over time

22
Q

Erosion

A

The moving of weathered material, or sediment , from one location to another

23
Q

Deposition

A

The laying down or settling of eroded material

24
Q

Glacier

A

A large mass of ice, formed by snow accumulation on land, that moves slowly across Earth’s surface

25
Q

Rock

A

A naturally occurring solid composed of minerals, rock fragments, and sometimes other materials such as organic matter

26
Q

Mineral

A

A naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition

27
Q

Crystallization

A

The process by which atoms form a solid with an orderly, repeating pattern

28
Q

Extrusive Rock

A

Igneous rock that forms when volcanic material erupts, cools, and crystallizes on Earth’s surface

29
Q

Intrusive Rock

A

igneous rock that forms as magma cools underground

30
Q

Lithification

A

The process through which sediment turns into rock

31
Q

Compaction

A

A process in which the weight from the layers of sediment forces out fluids and decreases the space between sediment grains

32
Q

Cementation

A

A process in which minerals dissolved in water crystallize between sediment grains

33
Q

Rock Cycle

A

The series of processes that change one type of rock into another type of rock