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48 Cards in this Set
- Front
- Back
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What is a sphere? |
A sphere is shaped like a ball, with all points on the surface at an equal distance from the center. |
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Describe Earth's shape? |
Earth's shape is somewhat is flattened at the poles and with a slight bulge at the equator. |
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Know the different Earth's systems? |
Atmosphere, geosphere, biosphere, hydrosphere,cryosphere.
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What is the atmosphere? |
Layer of gases surrounding Earth. |
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What makes up the geosphere? |
Earth's entire solid body. |
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What makes up the biosphere? |
All living organisms on Earth. |
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What is the hydrosphere? |
All liquid water on Earth. |
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What is the cryosphere? |
All frozen water on Earth. |
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What is gravity? |
The force that every object exerts on all other objects because of their masses. |
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How does distance affect gravity? |
The more mass either object has, or the closer together they are the stronger the gravitational force. |
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How does mass affect gravity? |
The more mass either object has the stronger gravity is. |
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What played a major force in the formation of our solar system? |
Gravity. |
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How did our planet form? |
Gas, ice, dust- Nebula |
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What role did gravity play in shaping our planet? |
Pulled materials together. |
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What is density? |
The amount of mass in a material per unit volume. |
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What did scientist use to determine Earth's interior? |
Earthquake waves. |
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What happens to tempature as you go deeper into the Earth? |
Tempature increases? |
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What happens to to pressure as you go deeper into the Earth? |
Pressure increases.` |
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What role does earthquake waves play in determining what the Earth's interior is like? |
Some waves cant travel through some waves can't which therefore means some layers are solid and some are liquid. |
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How are the layers of the Earth different? |
Different densities and materials. |
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What is the crust? What is it made of? |
Brittle rocky outer layer of Earth, low mass, silicone, and oxygen. |
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What are the two types of crust? |
Oceanic and continental. |
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Compare and contrast oceanic and continental crust? |
Oceanic- Thin,dense Continental- Thick,less dense |
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What is the mantle? |
Thick middle layer in the solid part of Earth.` |
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Describe the mantle. |
More iron and magnesium. |
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What is the lithosphere? Describe the lithosphere. |
The crust and uppermost mantle into a rigid layer. Brittle and rigid, like the rocks in the crust. |
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What is the asthenosphere? Describe the asthenosphere? |
Plastic layer within the mantle. Below the lithosphere, rocks are so hot that tiny bits melt. |
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What does the word "plastic" mean when talking about the asthenosphere? |
Plastic refers to materials that are soft enough to flow. |
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What is largest layer of the Earth? |
The mantle? |
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What is the core? |
The dense metallic center of Earth. |
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What are the two parts of the core? |
Solid Inner and Liquid Outer. |
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Describe the outer core.` |
The mantle and core are made of different materials, and have different melting tempatures. |
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Describe the inner core. |
Dense ball of solid iron crystals. |
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What is the magnetosphere? |
The outer part of the magnetic field that interacts with these particles. |
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What part of the Earth is covered with water? |
70%. |
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Are the physical features on Earth the same as in the ocean? |
Yes but we can't see them. |
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What are landforms? Give examples. |
Topographic features formed by natural processess. Mountains. |
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How are landforms identified? |
Shape, slope, elevation, relief, oreintation. |
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What is elevation? |
Describes height. |
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What is relief? What is low relief? High relief? |
Relief- difference in elevation Low relief- small difference High relief- big difference |
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What is topography? |
Shape of an area. |
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What are plains? How do they form? |
Plains- landforms with row relief and low elevation Form- sediment deposited in different ways |
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What are platueas? How do they form? |
Platueaus- Low relief and high elevation Form- Earth uplift rock layers |
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What are mountains? |
High relief and high elevation. |
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Describe how mountains form. |
Buildup of lava on the ocean floor. |
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What are costal plains? How did they form? |
Costal plains- plains along the water (East and Gulf Coast) Form- sediments building up |
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What are interior plains? |
Plains located in central U.S.A. |
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Describe three major landform regions in the U.S.A. |
Mountains, plateaus, and plains |
