This Week in Science

This week in science I missed most of the week due to testing and the Solar Sprints. But I will talk about the Solar Sprints as it also relates to science. It is always a good experience and a great place to learn about scientific theorems and ideas to improve our cars. I learned that if you cool your solar panel you can increase the efficancy of the panel. This is because the cooler the panel and wires the less resistance thus a better working panel. We also learned that friction even of a wire on to small eye hooks can be a great problem working against the car. We realised that the smaller the car the better chances it has of winning because we saw only small cars in the final race.

This week in Science (seven)

This week in science we learned more about moon phases and why they happen.  They happen because when the moon revolves around the Earth one half is always lit up by the Sun.  But we on Earth can only see one half.  The moon is therefor cut into imaginary pieces, the side we can see and the side that is lit up.  So as the moon revolves, the section we can see that is also lit up by the Sun will decrease and increase in a cycle.  We also learned that the moon revolves at the same rate that it rotates.

This week in Science (seven)

This week we learned about orbits, dropping objects, and the word that should never be spoken GRAVITY.  We learned that every object accelerates at the same rate, this is because the earth pulls an object at the same amount as the mass of that object.  The earth's force will be equal to the mass of an object at every time.  Also we learned that if an object, for example the moon, is being being pulled towards the earth but it wants to go in the path it is currently traveling, it will go in the middle of these two directions.

This week in science

This week in science we started the Dynamics Unit. We learned how to make force diagrams. We learned that when arrows going in opposite directions are equal in length the forces are equal thus the object to wihich the force is applied will not move. We also learned that when one force is greater than another force pulling in the opposite direction the object will travel in the direction that the stronger force is making it go.


object
<-------.------->
- F1 F2 +

These two forces above are opposite and equal so this can be repersented by F1+F2= oN
This means the object will stay statioinary.

This Week in Science

This week in science we did much work on our kinematics Units and I learned a lot. I learned that objects accelerate at a constant rate. Also I learned that to find the slope of a linear line you can do:

V1+V2= change in V
A= -------------------
T1+T2= change in T

But this will not work for something that is acclerating only something that is travelling at a constant rate. I also learned how to find when to things will colide by creating an equation and solving for the variables to find the time and place when the two objects will meet.

This week in Science (Eleven)

This week in Science we started physics. We are learning about how we look at motion and how we tell if something is really moving or not. We learned that everything is moving in actuality but if we said this than we would gain nothing. But if we compare some of these object to some others relatively they are not moving. Also to determine if something is moving or not we must have a time interval and a way of measuring the distanceit has travelled. These are the three things necessary for seeing and then measure how fast something is moving.

This week in Science (nine)

This week in science we identified different food products using a worksheet. The next day we went over this sheet and dicussed our thoughts on it. We then ordered rocks according to their hardness. My group got the extra credit on that one. Then we added five other items; a nail, a finger nail, a street-plate, glass and a strip of bronze. We then had to order these with the rocks. Scientists use these same materials to classify rocks with hardness. These materails give them known values that they can orginise the rocks around. Then on friday we learned about how minerals are in most everything including humans.