STOP SMOKINGMATERIALS NEEDED

- A clear plastic bottle.

- A teat of a baby bottle.

- A deep container.- A cigarette.- Water and cotton.- A match or lighter.- Awl or a sharp

element.PROCEDURE

- Fill the bottle with water.- Make the teats hole bigger so as you can introduce the

cigarette on it..- Put some cotton inside the teat and fix the teat in the

bottle rim.- Using the awl make a small hole on the bottom of the

bottle which you are going to cover and uncover . - Put the bottle into the deep container and light the

cigarette.- After finishing the experience have a look at the cotton.

HYPOTHESIS:The tar gets sticked into the lungs.

Put some cotton inside the teat and fix the teat in the bottle rim.

Using the awl make a small hole on the bottom of the bottle

CHANGING LIGHT ‘S direction

MATERIALS NEEDED

- A shoes box- A clear glass container

with straight faces- Scissors- Water- A torch

PROCEDURE

- Cut a narrow slot in one face of the box.- Put the water into the glass container.- Put the container into the box.- Switch on the torch and put it into the

slot.- Notice: What happens?- Suggestion : perform the experiment in

the darkness.

HYPOTHESIS:The light changes its direction when it crosses the water.

CONCLUSION

REFRACTION The light moves slower inside the water than in the air.

ENERGY AND LIGHT

The light moves slower inside the water than in the air

The light changes its direction when it crosses the water.

STATICELECTRICITY

HOW DOES MOULD GROWGet these materials ready

 two slices of fresh breadtwo glasses of watertwo tablespoons of sugartwo plastic bags 

Follow the instructions • Wet one of the slices of bread with water. Put the bread into a plastic bag and

close the bag well. Label the bag “without sugar”.• Put two tablespoons of sugar into a glass of water. Mix the sugar and water

well. Wet the second slice of bread with the sugar water. Put the bread into a plastic bag and close the bag well. Label the bag “with sugar”.

• Put the bags with the bread in them in a dark place, at normal room temperature.

A weekbefore

conclusion

A TERRARIUM FOR EARTHWORMS

2010 - 20112011- 2012 IKASTURTEAK