Large pieces of Earth’s crust that slowly move around like giant puzzle pieces.

A place where two tectonic plates move toward each other and can form mountains or volcanoes.

A place where two tectonic plates move away from each other, creating new crust.

The preserved remains or traces of plants or animals that lived long ago.

The thin, outer layer where we live. It’s like the skin of an apple.

The thick layer under the crust made of hot, soft rock that moves slowly.

A layer of liquid (melted) iron and nickel.

The solid center of the Earth made of very hot, dense iron and nickel.

The theory that erth's plates are always movingand changinging the planet's surface

A long deep crack in the ocean floor where one plate sinks beloww another.

An under water mountainchain wherre new crust is made.

When one plate sinks under another plate

Scientist who proposed the idea of continental drift. He said that the continents were once joined together in one big landmass called Pangaea and slowly moved apart over time.

The idea that Earth’s continents were once joined together in one large landmass and slowly moved apart over millions of years.

supercontinent where all Earth’s land was once joined together.

The rocky surface at the bottom of the ocean.

Sea-floor spreading 🌋

The process where new ocean crust forms as magma rises and pushes plates apart.

How old a rock is, based on when it formed.

An index fossil is a fossil of a plant or animal that lived for a short time but was found in many places.

The geologic time scale distinguishes Earth's history based on life-forms that existed at certain times since the planet's formation.

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Tectonic plates/🌎

Science Vocabulary

Term	Definition
Tectonic Plates	Large pieces of Earth’s crust that slowly move around like giant puzzle pieces.
Convergent Boundary	A place where two tectonic plates move toward each other and can form mountains or volcanoes.
Divergent Boundary	A place where two tectonic plates move away from each other, creating new crust.
Fossil	The preserved remains or traces of plants or animals that lived long ago.
Crust	The thin, outer layer where we live. It’s like the skin of an apple.
Mantle	The thick layer under the crust made of hot, soft rock that moves slowly.
Outer Core	A layer of liquid (melted) iron and nickel.
Inner Core	The solid center of the Earth made of very hot, dense iron and nickel.
Plate tectonics	The theory that erth's plates are always movingand changinging the planet's surface
Deep Ocean trench	A long deep crack in the ocean floor where one plate sinks beloww another.
Mid-Ocean Ridge	An under water mountainchain wherre new crust is made.
Subduction	When one plate sinks under another plate
James Wegener	Scientist who proposed the idea of continental drift. He said that the continents were once joined together in one big landmass called Pangaea and slowly moved apart over time.
Continental drift	The idea that Earth’s continents were once joined together in one large landmass and slowly moved apart over millions of years.
Pangaea	supercontinent where all Earth’s land was once joined together.
Ocean floor	The rocky surface at the bottom of the ocean.
Sea-floor spreading 🌋	The process where new ocean crust forms as magma rises and pushes plates apart.
Rock age 🪨⏳	How old a rock is, based on when it formed.
Index fossil	An index fossil is a fossil of a plant or animal that lived for a short time but was found in many places.
Geologic time scale	The geologic time scale distinguishes Earth's history based on life-forms that existed at certain times since the planet's formation.

Created by: user-2000057

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