The Great Science Share

How can we harness power from the wind?

We made wind turbines and experimented with different blades to see which created the most amount of volts.

We tried different shaped blades, different sizes, different amounts and also tested to see if the strength of the wind made a difference.

Our results were:

A triangular shaped blade produced the highest amount of volts.

Bigger blades produce the highest amount of volts.

More blades produced a higher amount of volts.

The stronger the wind the more volts.

With these results we discussed why real wind turbines only have 3 blades. The children concluded that it would make the turbine unstable and be too expensive to produce if the had more/larger blades.

The circulatory system.

We explored how blood travels through our body.

Deoxygenated blood travels into the right atrium of our heart, then through the right ventricle. It leaves the heart through the pulmonic valve and pulmonary artery to the lungs. In the lungs the blood cells collect oxygen and travel back to the heart. The oxygenated blood re-enters the heart into the left atrium then travels to the left ventricle before leaving via the aortic valve. From the aorta the oxygenated blood travels around the body releasing oxygen and collecting carbon dioxide. The deoxygenated blood then travels back to the heart and the system starts again.

BLOOD!

We have had a great time learning about blood! We made notes about the main components of blood and then made our own representation of the liquid!

1) First, we made plasma with yellow food colouring and added salt to represent the minerals. About 55% of blood is made from plasma and it allows blood to flow through our veins.

2) Then we made the red blood cells - cheerios soaked in red food colouring!

3) The white blood cells were represented by little white marshmellows!

4) Finally, we added purple pom-poms to represent the platelets.

Here  are pictures of our final concoctions!