This is the project I had to do the questions I need to answer are below Place the window screen or kitchen strainer over the bucket. Pour the sand through the screen to sift it. Save the sand remaining on the screen and discard the sand in the bucket.
Divide the saved sand evenly between the two plastic trays.
Smooth the surface of the sand with the ruler. Measure and record the depth of the sand in each tray. Make sure each tray has an equal amount of sand.
Make a medium-sized hole in the sand at one end of both trays. Do not dig all the way to the bottom of the tray. Leave some sand at the bottom of the hole.
Place both trays inside the freezer. Prop up the ends with the hole about 1 inch.
Pour 1/4 cup water into the hole of the first tray. Do not add any water to the second tray.
Leave both trays in the freezer overnight. Add another 1/4 cup water to the first tray each day for two weeks. Do not add any water to the second tray.
After two weeks, measure and record the length of the ice in the first tray.
Remove both trays from the freezer and place them on a flat surface for a few hours. Allow enough time for most of the ice to melt.
Observe and record what each tray looks like. Draw a picture of each tray.
Measure and record sand depth at each end of both trays.

QUESTIONS:

How long was the ice flow in the first tray?
After the ice melted, how was the sand in the first tray different from the sand in the second tray?
What was the sand depth in the first tray at the beginning of the experiment? What was the sand depth at the end? Answer these questions for the second tray.
Did erosion take place in either tray? Explain your answer.
How do you think the results would change if the trays were propped up two inches?

picture a world where computers are building made-to-order personalized robotic arms and synthetic organs, drones are circulating above mars! due to the rapid growth of technology, the future has never been more unpredictable, and it presents a huge challenge in education: we are teaching students how to work in a future that we have never been unsure of. it is widely predicted that in eight years’ time, there will be more jobs in the fields of science, mathematics, technology and engineering than in any other discipline. and, as the technology continues to develop, it will soon become clear that addressing social problems will involve more innovative thinking, and analytical and technical knowledge than ever before. undeniably, there are no subjects that encourage innovative and creative thinking, deep thought, problem solving and independence more than the stem subjects. while it is widely commented on that there is a need to reimagine the ways stem subjects are taught in schools by embracing a more interactive and innovative approach to appeal to more students, it should come as no surprise that some of the most reputable educational organizations in the world are already implementing changes to embrace stem. harvard, for example, announced in 2014 that they were increasing their computer science faculty by over 50% and has since introduced computer science as a core subject for all freshmen. the urgency of supporting stem subjects at a young age is becoming more relevant than ever, as adopting a keen interest in the curricula needs to happen early. however, beyond the age issue is one of gender.

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sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?

this would be called india