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Chapter 7 -Moon
Earth Space Science-The Moon
| Question | Answer |
|---|---|
| The Moon's surface gravity is what fraction of the earth's surface gravity? | 1/6 of the earth surface gravity |
| Mass can be defined as | a measure of the amount of matter. |
| What is a Maria | the broad, lava-flooded plains |
| The largest mare on the moon is | Mare Imbrium |
| How many time does the moon rotate during one revolution around the earth? | once |
| What is the average distance from the center of the moon to the center of the earth? | 384,400km |
| During the first half of the lunar month, the moon is said to be | waxing |
| in what phase of the cycle must the moon be for a total lunar eclipse to take place? | Full Moon |
| What theory states that the earth and the moon both originally solidified from the same cloud of dust | Accretion theory |
| Compared to the earth's average density, the average density of the moon is | Less dense |
| How does the moon shine | by reflecting the light of the sun |
| What is the line that divides the illuminated and shadowed areas of the moon? | Terminator |
| What is the rayed crater on the southern hemisphere of the moon? | Tycho |
| Lunar craters may have been formed by? | meteorites or volcanoes |
| God made the moon to be "the light to rule the night" this would explain the moon's? | size |
| Long valleys that start and end abruptly on the moon are called | rills |
| The length of the lunar month is how many days | 29 1/2 |
| the Cusp of a crescent moon point away from the | Sun |
| In the northern hemisphere what full-moon appears Sept 21-23? | Harvest |
| how does a solar eclipse occur? | When the moon is between the sun and the earth |
| The capture theory says the earth captured a small planet by chance from | an orbit around the sun |
| the fact that stars blink out rather then dim and the moon's terminator is very sharp prove what? | The moon has not atmosphere |
| What are the moon's two motions? | It revolves around the earth, and it rotates on its axis |
| what kind of eclipse would be seen if observed from a location within the penumbra of the moon's shadow | Partial Solar eclipse |
| What are Baileys Beads and how they happen | They are seen just before and after a totality of the solar eclipse and are caused by sun shining through the moon's valleys. |
| Two arguments against the fission theory | The present-day spin of the moon and the earth could not have resulted if the theory was true and Intense heating of the earth's crust is not evident in the rocks. |
| the point the moon's orbit is farthest from the earth | apogee |
| depressions on the surface of the moon usually surrounded by circular walls. | crater |
| the points of the crescent moon | cusps |
| sunlight reflected from the earth to the moon and back again | Earthshine |
| occurs when the moon is in line with the earth and the sun | eclipse |
| Large dark areas on the surface of the moon | Maria |
| the point when the moon's orbit is closest to the earth | perigee |
| some craters formed by meteor impacts have these | rays |
| the force of gravitational attration | weight |
| The moons is a little less wider then ? | United states |
| The moon shape is | Spherical |
| The initial speed that an object must have in order to break the earth's gravitation | escape velocity |
| Are the back side and the dark side of the moon the same? | No |
| The moons orbit is? | elliptical |
| The moon seen rising at 12:00 noon is a | waxing moon |
| Which eclipse last longer lunar or solar | Lunar |
| What moon rises at sunset and sets at sunrise | Full moon |
| Helpful hint? | Make sure you know the graphic on page 152 and 153 in your textbook. |
Created by:
mrschulgin
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