Show:
Vocabulary Part I
Vocabulary Part II
Changes to Earth over Time
Mountains, Earthquakes, Volcanoes
Grab Bag
100
What do you call a physical feature on Earth's surface?
landform
100
What do you call broken up pieces of rock, sand, and soil?
sediment
100
Name at least THREE forces that can change landforms?
Ice, water, wind, gravity, earthquakes, etc.
100
What do you call soft, molten rock UNDER Earth's surface?
magma
100
What can cause rocks to break into smaller pieces?
Water causing rocks to hit other rocks, water getting into cracks and freezing and breaking rocks, tree and plant roots growing and breaking them, waves hitting rocks or cliffs and breaking them; etc.
200
What do you call remains of traces of past life?
fossils
200
What do you call the "supercontinent" that was all of the continents combined into one large one 225 million years ago?
Pangea
200
Name a SLOW type of mass movement.
creep
200
How can volcanoes change or create landforms?
They can create new islands, they can make mountains higher, etc.
200
How can moving water change landforms?
Waves can break cliffs, water can carve deep canyons, etc.
300
What do you call the BREAKING of rock into smaller pieces?
weathering
300
What do you call the MOVEMENT of broken rock pieces from one place to another?
erosion
300
Name a type of mass movement that occurs QUICKLY.
mudslide, landslide, or sinkhole
300
How can volcanoes be created?
When a plate moves over a hot spot in the mantle, at plate boundaries when magma rises between the plates, etc.
300
How has Earth's surface changed over the past 225 million years?
One giant continent has broken down into seven different continents
400
What is the only kind of rock that can have fossils in it?
sedimentary
400
What do you call the dropping, or depositing, of rock in a new location?
deposition
400
How can wind change landforms?
Wind can blow sand into dunes, wind can cause erosion creating arches and other unusual landforms, etc.
400
How can earthquakes change landforms?
They can cause deep cracks and breaks in mountains and valleys, etc.
400
Which layer of Earth is the hottest?
the core
500
What do you call the downhill movement of rocks, sand, and soil due to gravity?
mass movement
500
What do you call the theory of how Earth's continents have moved over time?
continental drift
500
How can ice change landforms?
Glaciers can carve deep U-shaped valleys, etc.
500
Describe one way mountains can form.
The can form where continental plates collide, when the crust folds, cracks, and bends upward because of the movements of Earth's plates, where continental and oceanic plates collide, where the pressure from movement at boundaries of plates pushes a block of rock upward, etc.
500
What two big continents did Pangea first break into?
Gondwana and Laurasia