Today, we learnt about the sun. We learnt about how the sun came to be, the effects that the sun has on earth, like solar storms, which can cause electrical appliances to fail, radiation emitted from the sun that keeps the earth warm. We also watched a few videos that describes the various effects of the sun and how it can impact earth. We also did kahoots based on the things we learnt in today's lesson and last week's lesson.
We also went out to view the sun through a telescope.
It was intriguing to be able to view the sun up close with a telescope without damaging our eyes.
Today, we learnt about Mars and its moons. We learnt that Mars is very different from how it was like a long time ago. There is evidence of possible lakes and rivers on Mars a long time ago, and recently, scientists have found evidence of a river underneath Mars' surface. I have also learnt details about Mars, such as its gravity, axial tilt and its temperature. One of Mars' moon is moving towards Mars at a rate of 2 metres per year, possibly colliding with Mars in the future. The other moon of Mars is moving away from it.
Currently, colonising Mars would be quite difficult due to various factors such as Mars' gravity and temperature. There have been various Mars missions, such as the Phoenix spacecraft.
Today we paired up and built rockets out of plastic bottles and other materials. We were supposed to launch the rockets using air pressure and the team who's rocket travels the furthest will win.
Our initial idea was to use gigantic wings at the side of the bottle to make the rocket glide in the air. However, our design was terrible and it failed. The main reason our design failed was because our wings were too big and the air resistance blocked the rocket from going forwards, so we made a few changes to the rocket.
After the changes were made, our second design was with much shorter wings, to decrease the surface area, so that the rocket can travel further. Our second design actually managed to travel quite far, which proves that our design worked.
After today's session, I learnt how to make air pressure rockets/water rockets and how the different parts of the rocket affect how it flies.