Literacy

For literacy this week we are researching famous people who made great discoveries in the world. I researched Ernest Rutherford. I researched him because he mapped the atom. After we had researched our person we had to make a poster displaying something that they achieved or how they achieved it.  Underneath is my poster.

                                                   

Numeracy

In numeracy this week we have been trying to find patterns in magic squares. Magic squares are normally a 3 by 3 grid where you need to put numbers in to make fifteen. Every column, row, and diagonal needs to add up to fifteen. We were doing it with 3 sets of 3 numbers. We had 6 challenges to do with magic squares.  Underneath are two of them.

                                         
As you can see there are fives going diagonally down the middle. This determines that the magic number is fifteen.  Each number needs to have the same difference from the middle number which in this case is 5. 3 is 5-2 and 7 is 5+2. We are currently working on harder magic squares which includes algebra.

Aurora

Aurora is a natural light display in the sky. It is usually of greenish color but sometimes red or blue. This natural occurrence usually occurs near the poles of the Arctic in the north and Antarctic in the south.

In the Southern hemisphere, the effect is known as the Southern Lights. Aurora occurs when electrically charged particles accelerate along the magnetic field lines into the upper atmosphere. There they collide with gas atoms, causing the atoms to give off light.

Why is Aroura green? Aroura is mostly green because when solar particles collide with our atmosphere at altitude of around  60 to 150 miles where there are high concentrations of oxygen. When the Oxygen is excited at these altitudes it causes the Aurora to appear in shades of green.