Term
| Cause of Earth's Spherical Shape |
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Definition
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Term
| Cause of Earth's Equatorial Bulge |
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Definition
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Term
| Cause of Earth's High Core Pressure |
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Definition
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Term
| Why do we think Earth's core is iron? |
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Definition
| Studying Earth's density and earthquakes. |
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Term
| How to deduce details about the interior of Earth |
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Definition
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Term
| Most abundant gas in Earth's atmosphere |
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Definition
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Term
| What breaks up methane, ammonia, carbon dioxide and oxygen molecules to change the atmosphere? |
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| Trapping of heat due to the presence of CO2 and H20 |
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Term
| Where does Earth's internal heat come from? |
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Definition
| From radioactivity and residual from Earth's formation |
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Term
| What causes the tectonic plates to move? |
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Definition
| Shifting of the semi molten mantle |
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Term
| Structure of the interior of Earth |
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Definition
| Crust, mantle, molten core, solid core |
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Term
| Source of Earth's magnetic field |
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Definition
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Term
| Effects of Earth's magnetic field |
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Definition
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Definition
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Definition
| Top-like rotation of Earth's axis over 26,000 years. Caused by the sun and moon acting on the equatorial bulge. |
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Term
| Effects of Coriolis Force |
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Definition
| Hurricanes, ocean tides, and jet stream |
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Term
| What happened to the craters on Earth? |
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Definition
| Erosion, tectonic activity |
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Term
| Source of Lunar Regolith and Lunar Rays |
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Definition
| Pulverized blanket of rock from meteor impacts |
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Term
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Definition
| Long, narrow valleys/lava channels or stretch cracks |
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Term
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Definition
| Impact of meteors, space dust, etc. |
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Term
| Why does the Moon lack an atmosphere and significant internal heat? |
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Definition
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Term
| Long term effects of tidal braking |
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Definition
| Earth slows (at a very slow rate), moon gets farther away and becomes tidally locked |
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Term
| How were lunar maria formed? |
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Definition
| Ancient volcanic eruptions |
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Term
| What are the effects of the moon's day and month being equal? |
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Definition
| The same side of the moon is always facing Earth. |
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Term
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Definition
| The same side of the moon is always facing Earth |
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Term
| Theory about origin of the moon |
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Definition
| Impact from a Mars-sized object |
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Term
| Does the moon have a magnetic field? |
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Definition
| No because the core is no longer molten. |
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Term
| Phases of the moon during Neap tides |
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Definition
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Term
| Phases of the moon during Spring tides |
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Definition
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Term
| Phases of the moon during eclipses |
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Definition
Solar eclipse = new moon
Lunar eclipse = full moon |
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Term
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Definition
| Total solar (umbral), total lunar (umbral), partial solar (penumbral), partial lunar (penumbral) |
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Term
| What time of year do eclipses occur? |
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Definition
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Term
| Which side of the moon is thicker? |
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Definition
| The far side because there are more maria on the near side. |
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Definition
| Time from 'noon' to 'noon.' Varies a little bit depending on the time of year. |
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Definition
| Time for Earth to make one rotation with respect to the sun. A little bit longer than 24 hours. |
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Term
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Definition
| Time it takes Earth to make one rotation with respect to the stars. About 23.9 hours. |
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Term
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Definition
| Longitude line on the east side of which the date is one day earlier than on the west. 180 degrees. |
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Term
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Definition
| 0 degree longitude line used as a reference line from which longitudes east and west are measured. |
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Term
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Definition
| Consisted of 10 months. (No July and August). |
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Term
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Definition
| Roman calendar with July and August added by Julius Caesar. Also had a leap year every fourth year. |
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Term
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Definition
| Calendar we use today. Leap year every year that's divisible by 4 and 400. No leap year when it's divisible by 100. |
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Term
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Definition
| Number of days since 4713 BC |
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Term
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Definition
| So the calendar won't drift from the seasons (winter happens during the same months every year). |
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Term
| How many days are in a Gregorian year? |
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Definition
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Term
| What culture is the source of our 24 hour day? |
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Definition
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Term
| What culture originated division of time into 60 parts? |
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Definition
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Term
| To which city in England are astronomical times referred? |
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Definition
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