This was a question a wanted the awnser to before I did the science unit this term. This was my question, why is there no gravity in space.
The awnser was that there is gravity in space it is what holds the planets up and make them spin this type of gravity is very weak. This microgravity is sometimes referred by space agencies as zero gravity which is very misleading. Gravity In space is created by almost very large object. Gravity is measured in gs on earth the gravity is 1g on Jupiter the gravity is 2.4 times stronger than earths.
My second question was why do planets spin but that was already awnsered.
This month we have been filling in a moon diary we made everyday we updated our diary we did this because it fitted in with our space science unit.
this is a picture of my moon diary.
There are a few patterns with the moon phases the rise time is later every day until it rises the same time as the Sun. There are many moon phases like the waxing gibbous the waning gibbous.
Yesterday we went to the Victorian space science education centre.
We learnt about static electricity in the first quarter and we played with theses magnetic wands that makes foil fly.
In the second quarter we made our own dancing robot with a simple electrical circuit which included a motor some clip wires and a battery. After we made them we gave them upgrades and battled them with other robots. My robot had plastic swords that were swung in circles by the motor which knocked other robots of the table.
In the second halve we went to put on some spacesuits and did a activity we split into two teams and I was in mission control. I had to make sure everything was ready for the launch and I had to make sure whenever there was an error I had to fix it as fast as I could. In the end 2 people died in the ship because of radiation.
Now it was my turn to be in the spaceship in there we did some science experiments and communicated with the command centre. My parter was Kevin and I did the cabbage acidity test. We made a mix out of red cabbage and put different things in the liquid and it changed colour.
It was the best excursion I had ever.
Here is a pictures of us in our spacesuits.
This is the table we made we had to pick which one we thought was right we didn’t agree with any of them so we made our own box which is highlighted in blue. To get to this we made a model of how to earth moon and sun rotate and where the sun and moon rises.
Today for science we learnt about shadows, shadows are greyish shapes that form when someone or something blocks the sunlight from hitting the ground. Shadows go the opposite direction that the sun is shining from.
Here is my shadow in the morning at about 10:30. My shadow in this photo is facing in front of me. The shadow is facing me because the sun is behind me.
shadows change over time because as the sun moves form east to west shadow can either grow longer during sunrise and sunset. In the middle of the day there is no shadow at all.
In th is photo we were supposed to draw our shadow again and see how they changed. In this photo there is no shadow because the clouds are covering the sun so the suns rays are blocked. In this photo there is only one shadow It is the clouds shadow.
This is how I think the earth moon and sun works.
This is my work that I did yesterday to show what I though. I think that the moon orbits the earth while the earth orbits the sun. Our topic yesterday and today was aboutvthe lunar system.
How do you think the lunar system work.