Earth's 4 Layers
Tectonic Plates
Plate Movement
Waves & Tides
Erosion
200
What are the 4 layers of the Earth, in ORDER
Crust, Mantle, Outer Core, Inner Core
200
What are tectonic plates?
Interaction of the Earth's rigid lithospheric plates as they slide slowly over the asthenosphere.
200
What is an earthquake?
the movement or vibration of the ground when part of the Earth's crust shifts
200
How big of waves do normal winds produce?
2 to 5 cm
200
Which erodes faster - soft rock or hard rock?
Soft rock
400
The crust is divided into two groups. What are they?
Oceanic Crust and Continental Crust
400
What are 5 pieces of evidence for Pangaea and the existence of tectonic plates?
Fossils, locations of volcanoes and earthquakes, land warping, ocean floor spreading, continent shapes
400
What 3 things can movements in the earth's crust do to rock?
Movement in the earth's crust can squeeze, stretch, or twist rock.
400
Which is the first to feel the full energy of the ocean's waves - headlands or bays?
Headlands
400
How often does erosion and deposition happen?
Every day
600
What are the differences between the lithosphere and the asthenosphere?
Lithosphere is crunchy, covers the crust and the upper mantle.
Asthenosphere is soft and can bend like plastic, is below the lithosphere and covers only the upper part of the mantle
600
What drives plate movement?
Convection currents in the mantle drive plate movement
600
Are landslides caused by tectonic plate movement?
No
600
What is a crest and a trough?
A crest is the highest part of a wave, and the trough is the lowest part of a wave
600
What are the four agents of deposition?
Gravity, Wind, Water and Glaciers - they are the same as the agents of erosion
800
What are the differences between the outer core and the inner core?
The outer core is liquid, made mostly of iron, and is the cause of the magnetic fields.
The inner core is solid, made of iron and nickel, and is the densest layer.
800
What are the 3 plate boundaries?
Convergent, Divergent, Transform
800
What do convergent plates do to the crust?
Convergent plates destroy the crust
800
Are beaches created on steeply sloping shorelines, or on gentler sloping shorelines, and why?
Gentler sloping shorelines - they have calmer waters, so smaller rock fragments can settle and build up there.
800
What does erosion and deposition do with sediments?
Erosion transports sediments from one place to another
Deposition drops sediments in a new place
1000
Draw a diagram. INCLUDE the layers of the earth, the asthenosphere, and the lithosphere
1000
What does the word Pangaea mean?
Pan means whole/entire
Gaea means earth
1000
Which plate boundary does not cause earthquakes?
Divergent plate boundaries
1000
What is the difference between spring tides and neap tides?
Spring tides are when earth, the moon and the sun are in a line, and the tides are extra high and extra low
Neap tides are the smallest tidal movement, and occur when the sun and the moon are at right angles to each other, and there is less difference in depth between high and low tides
1000
What are the two types of weathering, and what causes them?
Mechanical Weathering - water, changes in temperature, and the action of plants and animals
Chemical Weathering - Reactions with water, chemicals that are in the water, or gases in the air.