HAPPY HOLIDAYS

To my dear OTTERS

This year has passed so fast. We have shared great happy moments. You’re much bigger now, next year you will have to achieve new goals. Thanks for gave me laughter, fun and happiness. I’ll always remember you. Dear kids keep being responsible, caring, and over all lovely with your parents, classmates, and teachers.

Stretching and Squeezing

Springs are used in a variety of ways. They can be squashed or stretched. A squashed spring pushes up with the same amount of force that squashes it down. A stretched spring pulls back with the same amount of force that stretches it. If you stretch a spring too far it will not go back to shape.





BOING! Springs are all around us - most are made from a spiral of metal. There are big springs on trampolines and tiny springs in pens.



THAT'S THE LIMIT You can't stretch a spring forever! When you compress or squeeze a spring you push the particles it is made from closer together. When you let it go, they jump apart. An elastic band is a bit like a spring. If you extend or stretch it you can feel the force pulling back on your hands. If you let it go, it will spring back to its original shape. But if you keep on stretching, it will not go back to shape. It may snap! This is its "elastic limit". Force is measure in NEWTONS IN = 1newton

Types of Rocks & Rocks Cycle

TYPES OF ROCK

Rocks are formed in different ways. We use them in a variety of ways.

What is in a rock? Rocks don't all look the same. They contain minerals which give them different colours and textures. Minerals in rocks sometimes from crystals that cna be polished and made into jewellery. Some rocks contain metals such as iron, tin or gold. Rocks are divided into three main types: igneous, metamorphic and sedimentary.

Igneous rock, like basalt and granite, are formed from the hot rock inside the Earth. Some of the melted rock or lava reaches the surface through volcanoes.

Metamorphic rocks, like slate and marble, have been changed by great heat or pressure inside the Earth.

Sedimetary rocks, like sandstone, are made from bits of other rocks, called sediments. They are washed away by rivers, settle into layers underwater and eventually become solid.

MAGNETISM

WHAT IS  A MAGNET?

A magnet attracts some metals and other magnets. Magnets are mostly made from iron or alloys of iron. (iron that has been mixed with other metals). Magnets can attract (pull towards them) objects that are magnetic. Magnets can repel (push away) other magnets. The area where a magnet has an a effect is called a magnetic field.

Feel the force

The two ends of a magnet are called the North and South poles because magnets were first used as a compas to help travelleres find the way.




Very attractive
We use magnets every day. Knives can stick to a magnet on a knife rack because they are made of a magnetic material.

MATERIALS PROPERTIES

INVESTIGATING PAPER

Kids did it great. They listened to the instructions carefully, then they took turns
PROCEDURE

- Hang each piece of paper in water. Time how long each takes to soak it all up.
- Hang each type of paper in water. See which soaks the liquid furthest up the water.
- Hang all the pieces of paper in water together. Measure how high the water goes up each paper in one minute.

MATERIALS

- pieces of different paper
- a cup of water
- a stopwatch
- a ruler
- food coloring
- a ruler

Discovering which paper absorbs water fastest on PhotoPeach Investigating paper on PhotoPeach