Okay so I need to do a short presentation on tides.
I've access to PowerPoint presentation with a diagram of the Earth with the Moon describing a circle round it, however the Earth is viewed from above the equator, which makes the Moon appear to have a circumpolar orbit.
This really doesn't matter for the level/purposes of the talk. However I find it incredibly irritating and distracting, so I'd like a proper diagram looking down on the lunar orbital plane from a more appropriate point.
For example, if it was the plane of the ecliptic then a viewpoint above a point on the Arctic Circle would work.
The lunar orbit is inclined at around 5° to the ecliptic. So the points will vary between latitudes of 61.5° and 71.5°. If I'm visualising it correctly then, starting at 71.5°, after a day the point will have completed a loop round the earth and kind of spiralled south slightly. After 14 days it would reach 61.5° by spiralling south and then start to travel north again completing it's journey after a lunar month.
Have I got this correct? (I'm only interested in timescales of months to a few years)
Are there animations showing this movement should any smartarse in the class ask for a detailed explanation?
Thanks
I've access to PowerPoint presentation with a diagram of the Earth with the Moon describing a circle round it, however the Earth is viewed from above the equator, which makes the Moon appear to have a circumpolar orbit.
This really doesn't matter for the level/purposes of the talk. However I find it incredibly irritating and distracting, so I'd like a proper diagram looking down on the lunar orbital plane from a more appropriate point.
For example, if it was the plane of the ecliptic then a viewpoint above a point on the Arctic Circle would work.
The lunar orbit is inclined at around 5° to the ecliptic. So the points will vary between latitudes of 61.5° and 71.5°. If I'm visualising it correctly then, starting at 71.5°, after a day the point will have completed a loop round the earth and kind of spiralled south slightly. After 14 days it would reach 61.5° by spiralling south and then start to travel north again completing it's journey after a lunar month.
Have I got this correct? (I'm only interested in timescales of months to a few years)
Are there animations showing this movement should any smartarse in the class ask for a detailed explanation?
Thanks
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