Category Archives: 9RI 2011

Orbits

Today we are learning how planet, meteors, comets, satellites and moons form and maintain their orbits.

Orbits are formed by a mass (like a planet or a star) having a strong enough gravity. The gravity of this mass may pull other objects towards it and then those objects may get trapped in the pull of the gravity. An example of this is the 9 planets in our solar system orbiting around the sun.

A satellite is a spacecraft, moon or planet that moves in an orbit around a planet.

An asteroid is a large rock mass that is mainly found between the orbits of Mars and Jupiter.

A meteor is a peice of rock or metal that move through space.

A meteorite is a meteor that has landed on Earth.

A comet is an object that moves across the sky that has a bright tail of light. They are usually made of rock and ice and go far away and even out of our solar system.

A moon is a large mass that is smaller than a plant that orbits a planet.

A planet is a large body/mass of solid, liquid or gas that orbits a star.

An orbit is the circular path taken by an object as it moves around something.

building our maze’s

today in clasand next few days we will be building our mazes,these will be our light maze wher we will bend the light around the corners of the maze and at the end of both exits will be a cardboard camera and an eye.

aim: to build a maze with mirrors in it and be able to bend the beams af light around corners in a camer and an eye.

Dissecting eye balls

Today in class we will dissect sheep’s eye balls and understand how an eye works and whats in an eye.

1. We got the eye already out of the sheep.

2.We held the eye in our hands and sniped off the musle around the out side

3.After we had cut the musel we put out scissors in the top if the eye wall.

4.Then we cut around the whole eye carefully not to cut the lenses.

5.We opened the eye out and sore all the parts of the eye .

In the eye  there will be a gooie juice that comes out when punctured, when you open the eye you will see the lences at the front behind the puple and a ring that looks like a focus around the out side of it which is red  on the inside called the iris.

Making pinhole cameras

Today in class we are to create a cardboard camera to go on one side of our maze.we will create this using cardboard,plastic tubes,tin foil,metal tubes,baking paper , black paper and selotape.

1.First you get a tube and cut the ends off it.

2. cover  with tin foil.

3.poke a very small pin hole in the tin foil at the covered end.

4.Roll up a a piece of black paper to size of tube and selotape .

5. cover end with baking paper and selotape tightly .

6. put the black paper roll in to tube .

7. pull black roll back and forward to focus camera.

The picture will look a  bit blurry at first but as you slide it back and forward you can make out the picture but its upside down. when you push the outer tube out the picture gets bigger and when you pull it back in again it gets smaller and harder to see.

 

Colour and Taste – science fair project

Zeus and Jamie are seeing of Colour affects the taste of a sweet drink

Convection Currents

We used the smoke box, the fish tank with hot and cold, and paper dots in a beaker to see convection currents.

Radiation

We heated test tubes which were white, silver and black to see which heated up the fastest. Then we turned on the infra-red light.

CONVECTION!

Movement of heat energy in liquids and gases.Magma in the earths mantle.

Hot Air Balloons!

We made hot air balloons from tissue apper. Some caUGHT FIRE!! They did not go as high as we wanted.

Acid Concentration Investigation!

We are making solutions with different concnetrations. Then we drop in 1cm of Magnesium metal. It fizzes and makes hydrogen bubbles. We time how long it takes to dissolve. We want to find out the effect of the acid concentration on how fast the mg dissolves.