Water: I think that the water will bounce off the cup and then will ripple out.
Sand: I think that the sand will stop the water as soon as it hits the dry sand it will stop but the sand that is wet will harden
Pebbels: I think that the water will hit the pebbles and then some of it will stay on but the rest will fall of and reach the bottom of the cup
Dirt: I think that the dirt will act very much like the sand and that it will harden.
I think the plant will absorb the water into its roots and that it will stay on there
Iron: I think the water will bounce off the water.
Water: The water did bounce up and than ripple out once it comes down.
Sand: The sand did what I think it would do what I thought it would! It sank in and harden.
Pebbels:The water did land on the pebble but more dripped off than stayed on. So I was 50/50 on the question.
Dirt: The dirt acted like the sand very much. Even though it was hard to see I saw it hardening and stop at the dry dirt.
Plant-Cacti: The plant had the water stay on the leaf but after 10 seconds it fell right off.
Iron: The iron acutely stayed on on the surface and didn't bounce off.
Water: I am not surprised that the water reacted the way I thought it would. I predicted this because I have seen a water drop hit water in slow motion
Sand: The sand acted the way I suspected it would. I am not surprised by the results of the experiment though.
Pebbels: I am surprised that the pebbles mostly dripped of the pebble that I splashed. As I anticipated it to stay on more.
Dirt: The dirt acted very much like it's grainy counter part sand. I am was very lax in choosing my prediction and it payed of.
Plant-Cacti: I was very exited when I saw that it sicked on but, after 10 seconds it fell off.
Iron: The iron actually stayed on no mater how long I waited that I was surprised by.