The Shrinking Moon

Recently, I came across an interesting article about the shrinking Moon. After reading it, here is what I think happened. The Moon, after being hit by many asteroids and other foreign objects from the space, was really hot and as it cooled, it shrank. So, here is what I think may happen when maybe millions and millions or maybe longer years later, when the moon shrinks to nearly nothing:

1)Firstly, the tides here on Earth will be less strong as the gravitational pull of the Moon is gone.However, there will still be tides as there is still the Sun.
2)Secondly, a day will be shorter as without the gravitational pull of the Moon on the Earth, the Earth will rotate faster and thus we will get shorter days.
3)Lastly, there will be no Moon during the Mooncake Festival! :(

Science ace project(2) Parts of an animal cell

Science Ace Project---parts of an animal cell

My ace project(1) on Oobleck

Oobleck -

Separation technique(1)

There are many separation techniques and the one I will be explaining in this post will be evaporation.

Evaporation

Evaporation is a separation technique used when we want the solute and not the solvent, which will we evaporated. We use this technique and not filtration because sometimes, things like salt can dissolve in the water into tiny particles that cannot be filtrated. However, the disadvantage would be that we cannot get the solvent because it is already being dissolved away.

Paper Chromatography

In one of the past science lessons, I learnt about paper chromatography. We used it to seperate the blue colour of a pen to see what colours makes up its colour. We had a dot on a filter paper and put it in a test tube of ethanol. Lastly, we waited. We waited until the colour was broken up and observed the colours present at the end. The further the colour is from the original blue colour, the more loosely attached it is to the filter paper, and thus the closer it is to the blue colour, the more strongly it attaches itself to the filter paper. There are also other forms of chromatography like gas chromatography which separates different gases.

Term 2 sabbatical reflection

For my term 2 sabbatical, I participated in a course called "Science Eureka" which is a course that, by looking at its name you will know, teaches us science. The course was really interesting as we learnt science through many different experiments. We did experiments on making the best parachute, electrolysis and many others. The course ended with a quizz to test us on what we have learnt. On he last day of the course, each group was given a project to present to the whole class. I will be putting my project in another post.