If a star is located 40,000 light years from Earth, what can you conclude about the light from the star? The light will travel 40,000 kilometers to reach Earth. The light will travel 300,000 kilometers to reach Earth. The light will take 300,000 years to reach Earth. The light will take 40,000 years to reach Earth.

Explain how the density of ocean water is affected by temperature and how this results in major ocean currents distributing heat away from the equator toward the poles?

What causes the cyclical changes in the appearance of the moon?

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.