Term
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Definition
| Hypothesis that describes the formation of planets within a solar system. |
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Term
| Summarize the steps of the Nebular Hypothesis: |
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Definition
1. Cloud of dust and matter begins to spin and collapses in upon itself.
2. Dust particles sticking togeteher form planetesimals.
3. Planetesimals collide forming protoplanets.
4. Protosun in center become hot enough for fusion to occur.
5. The sun vaporizes dust in between planets.
6. Solar winds are present. |
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Term
| Name the four branches of Earth Science |
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Definition
Geology
Meteorology
Oceanography
Astronomy |
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Term
| List 3 pieces of evidence for the nebular theory: |
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Definition
1. All planets revolve around the sun.
2. Sun and planets are on same plane.
3. Most planets rotate in same direction around the sun.
4. Dense planets are closets to sun; least dense are farthest from sun.
5. Most planets have moons.
6. Presence of asteroids and comets. |
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Term
| The earliest atmosphere was believed to contain which two substances? |
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Definition
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Term
| What is believed to be the source of most atmospheric gases prior to free oxygen? |
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Definition
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Term
| What process allowed for free oxygen to become a part of the atmosphere? |
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Definition
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Term
| What are the two most abundant elements found in our current environment? |
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Definition
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Term
| Name the three places we believe our ocean water came from: |
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Definition
1. Condensation of water vapor from volcanoes.
2. From comets that bombarded Earth
3. Icy rings melting |
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Term
| Name the two ways you can classify/organize the layers of the Earth: |
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Definition
1. By chemical composition
2. By physical properties |
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Term
| Name the layers of the Earth from inside out, if based on chemical composition. |
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Definition
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Term
| Name the 5 layers of the Earth from inside to outside, if based on physical properties: |
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Definition
1. Inner Core
2. Outer core
3. Mesosphere
4. Asthenosphere
5. Lithosphere |
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Term
| Which layer is thicker; the inner or outer core? |
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Definition
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Term
| Which layer is hotter; the inner or outer core? |
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Definition
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Term
| Which layer is more dense; the inner or outer core? |
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Definition
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Term
| What two elements make up the inner and outer cores? |
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Definition
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Term
| Which layer has a higher pressure; inner or outer core? |
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Definition
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Term
| What state of matter is the inner core found? |
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Definition
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Term
| In what state of matter is the outer core found? |
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Definition
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Term
| List the 4 elements that make up the mantle: |
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Definition
| Iron, Oxygen, Silicon, Magnesium |
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Term
| Which layer of the Earth comprises the majority of the Earth's volume? |
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Definition
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Term
| List the three parts/layers of the mantle: (from inside out) |
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Definition
1. mesosphere
2. asthenosphere
3. lithosphere |
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Term
| Which layer of the mantle is what we think of as "magma"? |
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Definition
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Term
| What allows the asthensphere to "flow"? |
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Definition
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Term
| Which layer makes up what we call the tectonic plates? |
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Definition
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Term
| Name the two types of crust: |
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Definition
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Term
| Which type of crust is more dense? |
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Definition
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Term
| Which type of crust is thicker? |
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Definition
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Term
| List the 6 elements that make up the crust: |
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Definition
| Aluminium, Silicon, Oxygen, Sodium, Potasium, Calcium |
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Term
| List 4 indirect methods used to support the understanding of Earth's layers: |
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Definition
Seismic waves
Meteorites
Magnetosphere
Earth's Average Density |
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Term
| What shape is planet Earth? |
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Definition
Oblate Spehroid
-a slightly ovaled circle |
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