What are the two main motions of the earth and can anyone tell me a reflected motion that each of them causes?

Homework got you stumped?

yes actually it did…

I would think orbit and spin. I don’t remember school but I am sure I went to one.

The two main motions are revolution (the planet traveling in its orbit around the sun), and rotation (the spinning motion of the planet around its own axis). In addition, there is a third, very slight motion, precession (the movement of the axis of motion with respect to Polaris, the north star).

I don’t know what a “reflected” motion is, perhaps you could be more specific?

I would be more specific if i knew what the dude was talking about ;)

I hate it when people (teachers) express themselves in a deliberately unclear manner and then act smug (or dock points) when you don’t understand.

I could take a guess at the “reflected” motions. Maybe they’re referring to the passing of the day and the cycle of the seasons?

Rock and Roll…when you turn your amps up to 11 you get awesome reflected feedback.

There is more motion though to think about it if you zoom out and view things from larger scale.The sun we are orbiting around is not stationary but moving within the spiraling Milky Way galaxy. The Milky way galaxy is also moving as the universe is expanding. I suppose you are studying just the small scale solar system model though. Kind of trippy to think about how we are hurling through space. There is definitely a whole lot of motion going on.

I also don’t understand reflective motion.

Would they be looking for evidence of something responding to the movement, such as foucault’s pendulum? Possibly nutation?