| A | B |
|---|
| First man in space | Soviet Cosmonaunt named Yuri Gagarin |
| Alan Shepard | 1st American in space; |
| John Glenn | 1st American to orbit Earth |
| Apollo 11 | American space mission that went to the moon ( Eagle landed on the moon) |
| Closest astronomical object to the Earth | Moon |
| The Moon takes ____ days to rotate (spin) on its axis (counterclockwise) | 27.3 |
| Moon phases occur for 2 reasons | 1) moon is seen due to reflected sunlight 2)moon is in orbit around the Earth |
| waxing (def) | Moon changes from New Moon to Full Moon, increasing in the amount of reflected light seen night after night |
| Waning (def) | Moon changes from Full Moon to New Moon, decreasing in the amount of reflected light seen night after night |
| Moon ___ in the east & sets in the ___ due to Earth's rotation | rise in the east, sets in the west |
| perigee (def) | Point in the Moon's orbit nearest to Earth |
| Apogee (def) | Point in the Moon's orbit that is furthest from the Earth |
| Length of a lunar month | 29.5 days |
| lunar eclipse (def) | Occurs when the moon passes into Earth's umbra |
| solar eclipse (def) | When the moon moves directly between the sun & Earth casts a shadow on part of the Earth |
| Why doesnt the moon have a lot of erosion? | no atmosphere |
| How old are lunar rocks? | 4.3 billion years old |
| How much of the moon is lit all the time? | 1/2 |
| Umbra (def) | total shadow |
| Penumbra (def) | partial shadow surrounding the umbra |
| Spring tride (def) | When high tides are very high, low tides are very low |
| Neap Tide (def) | When high tides are not very high, low not very low; sun and moon oppose each |
| Why isn't there a solar eclipse every month | The moon and earth are in different planes |
| Why does a lunar eclipse look red? | Light from the sun is refracted around Earth & only the longest wavelengths (red & orange) make it around |
| Name the moon phases in order from New Moon | New Moon, Waxing Crescent, Waxing Quarter, Waxing Gibbous, Full Moon, Waning Gibbous |
| Lunar month (def) | Time it takes the moon to go from one phase back to the same phase. |
| Annular Eclipse Synonym | Ring Eclipse |
| Annular Eclipse (def) | Occurs when the moon is at apogee and the moon's umbra fails to reach the Earth; the sun's photosphere appears as a ring around the moon. |
| Angle between the Earth's orbit and the moon's orbit | 5 degrees |
| What is the sun, moon Earth alignment that allows the moon to be seen in the daytime sky? | Sun - Moon - Earth |
| What is the sun, moon Earth alignment that allows the moon to be seen in the nighttime sky? | Sun - Earth - Moon |
| Moon phases (def) | Daily changes in the moon's appearence |
| Greek names for the moon | Artemis & Selene |
| Roman name for the moon | Luna |
| Tidal Range (def) | Difference in sea level between high tide and low tide |
| Area known for its large tidal range | Bay of Fundy, Nova Scotia |
