Suppose a person built a sandcastle of moon sand on the moon. What would that person find there a month later? (1 point)
The sandcastle would have grown larger because moon sand particles attract other moon sand particles.
The sandcastle would have grown larger by collecting more sand particles because moon sand is blown by wind.
The sandcastle would be much smaller because changing winds would have eroded much of the sand away
The sandcastle would remain in place the same size that it was because the moon has no wind.
The sandcastle would remain in place the same size that it was because the moon has no wind.
The sandcastle would remain in place the same size that it was because the moon has no wind.
To answer this question, we need to consider the conditions on the moon and how they would affect a sandcastle made of moon sand over the course of a month.
First, let's address the options one by one:
1. "The sandcastle would have grown larger because moon sand particles attract other moon sand particles."
To determine if this is true, we need to know if moon sand particles have any specific properties that would make them attract or stick to each other. While moon sand does indeed have different properties compared to Earth sand, there is no evidence to suggest that moon sand particles specifically attract each other. Therefore, this option is unlikely to be correct.
2. "The sandcastle would have grown larger by collecting more sand particles because moon sand is blown by wind."
This option suggests that moon sand is blown by wind, causing the sandcastle to collect more sand particles and grow larger over time. However, we need to consider that the moon has a very thin atmosphere, and the wind on the moon is not as strong as it is on Earth. Additionally, the low gravity on the moon makes it harder for particles to remain suspended in the air for prolonged periods. Therefore, it is unlikely that moon sand would be significantly blown around and accumulate on the sandcastle. This option is also unlikely to be correct.
3. "The sandcastle would be much smaller because changing winds would have eroded much of the sand away."
This option suggests that the changing winds on the moon would erode the sandcastle, making it much smaller over time. However, as mentioned earlier, the wind on the moon is not as strong as it is on Earth due to the thin atmosphere and low gravity. While some erosion may occur over a month due to the effects of micrometeorites and the movement of dust particles, it is unlikely to be significant enough to make the sandcastle much smaller. Therefore, this option is also unlikely to be correct.
4. "The sandcastle would remain in place the same size that it was because the moon has no wind."
This option suggests that the sandcastle would remain in place without any significant changes in size because the moon has no wind. As discussed earlier, the moon has minimal wind due to its thin atmosphere and low gravity. Thus, the lack of wind would indeed mean that the sandcastle would remain relatively intact, keeping the same size that it was initially.
Based on this analysis, the most likely answer is that the sandcastle would remain in place the same size it was because the moon has no significant wind to erode or transport the moon sand particles. Therefore, the correct answer would be: "The sandcastle would remain in place the same size that it was because the moon has no wind."