Forces - Aurora

Defining words associated with Aurora

Aurora Borealis - Aurora Lights in the Arctic / North

Aurora Australis - Aurora Lights in the Antarctic / South

Particles - a small portion

Atoms - source of nuclear energy

Magnetic poles - Earth’s magnetic field made by swirling motions of molten iron in Earth’s outer core, the north and south magnetic poles are near the geographic poles. This is where the Aurora Lights are centered around.

Geographic poles - the South and North poles (top and bottom of the earth)

Plasma -  a cloud of protons, neutrons and electrons that have become loose so they become another bunch of atoms.

Plasma particles - Small portion/s of plasma

Gas atoms - Atoms made of gas

Oxygen - The air that we breathe in

Hydrogen - a colour and odorless highly flammable gas.

Helium - A gas like element in the sun’s atmosphere and in natural gas, that’s lighter than air.

Forces - Hurricanes

They form over warm oceans of at least 30° C. The water evaporates easily and rises quickly as water vapour as a result of the warm waters. As the water vapour hits the cooler air it forms into water droplets of rain in storm clouds.  When the heat moves quick it creates a spinning pattern around the center of the storm clouds which becomes the eye. Stronger winds move it across the sea where it expands its width and become a bigger threat by gathering more warm moist air.  This also increases the speed and sucking power. Once the wind speed reaches 120 km per hour  it is called a hurricane and given a name so it is easy to identify.

Calculating The Percentage Of A Quantity

WALT: Calculate the percentage of a quantity. 

Word Problem: A bike costs $70. In a sale it is 20% of its original price, How much does it cost now?

Inertia Forces

What is Inertia?

Inertia is the first law of motion. It is when an object wants to continue what it is already doing. But if an obstacle is put in its way it will resist stopping. An example is a car, if the car suddenly stops moving(brake) the people in the car still want to move but a seat belt will act as an obstacle by stopping you from moving. Also when a stone is kicked it take force to kick it because it doesn't want to stop want its doing, but if it faces an obstacle such as air friction, rough ground or a physical obstacle then it will resist stopping, but eventually stop.

Magic Steel Ad Reflection

For the past few weeks we have been making an ad. We decided to make an ad about a stapler, Magic Steel! I think we worked well as a team, by sharing the editing, acting and planning. A complication we faced was the filming, because when we filmed a scene the first and last few seconds of the recording got cut out, so it took a bit longer than we expecting to film all the scenes. We planned well so we had a clear view of what we were doing, which was really helpful. If we did this again then I would prefer to have the camera at a higher level, because I found the angle a bit weird. Overall I think we did a good job at advertising our product and we also had fun making it. 

Wheel And Axle Poster

Balance and Unbalanced Forces

What is a Balanced Force?

Balanced Force is when two forces acting on opposite sides of an object are equal in newtons. It causes the object to remain still.

What is a Unbalanced Force?

A unbalanced force is the opposite of a balanced force. An object with unbalanced force moves in the opposite direction to the side that has more force applied.

Simple Machines Wheel And Axle Investigation

Homelinks Week 6

This week for homelinks I decided to write a reflection on the netball tournament that we went to on Tuesday.

On Tuesday our class (Ruma J) participated in a school netball tournament in Greymouth. The weather was quite nice, not too windy or rainy but the courts were a bit wet.We were all very excited to play because we had been training and many of us had not played netball before. The first game we played was against a Grey Main school team. We didn’t play too well in our first game but after that we played really good. As the day went on we got better. I think our best game was probably one of our last few games. Overall it was really a enjoyable day for everyone. We all played really good, as a team and individually.