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Moon Unit
| Question | Answer |
|---|---|
| Define Eclipse | When one object obstructs the view of another |
| What phase is a solar eclipse in? | New Moon |
| What phase is a lunar eclipse in? | Full Moon |
| Define solar eclipse | When the moon passes between Earth and Sun, blocking Sun's light |
| Define lunar eclipse | When Earth comes between the Sun and the moon, throwing a shadow over the moon |
| Order in solar eclipse | SME |
| Order in lunar eclipse | SEM |
| Whats the difference between a partial eclipse and a total eclipse? | Total is when the object in the umbra and partial is when the object is in the penumbra. |
| Define tide | Daily changes in the level of ocean water |
| Spring tides are __________. | EXTREME |
| Neap tides are __________. | MINIMAL |
| What phases do neap tides occur in? | First quarter, third quarter |
| What phases to Spring tides occur in? | New moon, full moon |
| What are the main things that affect tides? | Moon gravity, sun gravity, Earth's rotation, wind/air pressure |
| How long is in between each tide? (ex. HT to LT) | 6 hours 12.5 minutes |
| Why are tides caused? | Tides are caused by the pull of gravity by both the moon and the sun. The moons pulls with greater force because it is closer. |
| What's a spring tide? | High tides higher than usual and low tides lower than usual, occur twice a month |
| What's a neap tide? | Least intense difference between high and low tides, occur twice a month |
| Define solstice | When Earth's axis is tilted directly towards/away from the sun. |
| Define equinox | When the Earth experiences equal hours of day/night. |
| What's the winter solstice? | Shortest day of the year, occurs on December 21/22 |
| What's the summer solstice? | Longest day, occurs on June 21/22 |
| What's the vernal equinox? | Equal hours of day/night, occurs on March 20/21, Earth begins to tilt towards the sun |
| Whats the autumnal equinox? | Equal hours of day/night, occurs on September 20/21, Earth begins to tilt away from the sun |
| Distance matters. (TRUE/FALSE) | FAAAAAALSEEEE!!! |
| What would happen if the Earth had no tilt? | All of the regions would always have the same temperature. (ex. the north pole would always be cold) |
| How long does it take for the moon to make one rotation/revolution? | 29.5 days |
| Define rotate | Spinning on axis |
| Define revolve | Going around something due to gravity |
| Why do we have different phases of the moon? | Half of the moon is always lit-which is the part facing the sun. We only see that part facing us. Since the moon revolves/rotates, the part that we see (the part of the face that is lit) changes. |
| Why do we always see the same face of the moon? | The moon rotates on its axis once every 29.5 days, which is the same amount of time it takes to revolve around Earth. Because of this, the same side is always facing Earth. It doesn't look to us like the moon is rotating since we always see the same face. |
| Why don't we have eclipses every full/new moon? | The moon's ORBIT has a 5^o tilt |
| What's the order of the moon phases starting with new moon? | New moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning crescent. |
| How long does it take for the Earth to make one full orbit? | 365.25 days |
| Why do we have leap year? | The Earth's orbit takes 365.25 days, which we just round to 365. Our daylight hours would get very messed up if we just ignored these days for a long time, so we add one day every four years. |
| What's the reason for the seasons? | Earth's tilt and revolution |
| Having a moon that is either concave or convex... | Crescent |
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