1
2
3
4
5
100
How much of the Earth's surface is covered with water?
three fourths
100
How much of the water on Earth is salt water?
97%
100
A ________ is part on the Earth's surface that has a certain shape and is formed naturally.
landform
100
A _______ is a raised part of the land, usually with steep sides that rises above the area around it.
mountain
100
A _______ is a large land area that is mostly flat
Plain
200
A ________ is a flat area of land that is higher than the land around it.
plateau
200
The middle layer of the Earth which is the thickest layer and is made of rock
Mantle
200
The outside layer of the Earth where all living things are live is called
Crust
200
_______ rocks form when sediment or small bits of sand harden into small thin layers.
Sedimentary Rocks
200
A ________ is formed when a river or stream cuts through the land over a long period of time.
Canyon
300
___________ rocks form when melted rock from inside the Earth cools and hardens.
Igneous Rock
300
______ rock form when heat and pressure inside the Earth change other rocks
Metamorphic Rocks
300
True or false: The Earth's crust is thinker under land than under oceans?
True
300
A ______ is a material that is found in nature but has never been alive
mineral
300
A ______ is a crack in the Earth's crust where pressure can build up and cause earthquakes
fault
400
A _____ is what remains of a once living plant or animal
fossil
400
Fast changes to the Earth's landforms most likely occur from
earthquakes
400
The low area of land between mountains or hills or other high areas.
Valley
400
loose material that covers much of the Earth's surface
soil
400
An opening in the Earth's crust through which hot ash, gasses and melted rock move up from deep inside the Earth to the surface.
Volcano
500
The decayed remains of plants and animals that is found in soil.
Humus
500
The breaking up or wearing away of rock
weathering
500
The Earth's deep innermost layer
core
500
What are the names of the three layers of soil
topsoil, subsoil, bedrock
500
The process of carrying weathered rock from one place to another
weathering