Since the seasons are linked to the position of the Sun on the tilted ecliptic, it may logically follow that the seasons are caused by the tilt of the Earth's rotation axis in relation to its orbit around the Sun. How could this tilt cause such an obviously large difference in temperature throughout the course of a year?

Open the AstroTour animation "The Earth Spins and Revolves." Work through the Explanation section, paying close attention during the interactive parts.

Based on what you learn, click and drag the seasons to the place on the celestial sphere where you would expect the Sun to be during each season, as experienced in the Northern Hemisphere. (Note that the Southern Hemisphere will have the opposite season at that time).

Awatershed is a piece of land that drains water into a particular stream, lake, or river. which of the following factors often negatively impacts the water quality in a watershed? a.) wetlands b.) pollution c.) irrigation d.)rainfall

Select the correct text in the passage. the moving continents affect all subsystems on earth. which sentence identifies a potentially negative consequence of shifting continents? the supercontinent pangaea began to break up about 175 million years ago. [during this process, more coastline was exposed as the landmasses separated]. [the rearrangement and displacement of these huge landmasses resulted in the diversity of plants and animals we see on earth today]. [the movement of the plates sometimes leads to earthquakes and tsunamis]. however, over the long course of earth's history, their effects are usually minimal. in oceans, the plate movements usually lead to seafloor spreading. [seafloor spreading often results in the formation of underwater ranges of mountains].

Does water only take one path through the water cycle? (15 points)