Category Archives: Science

Conductivity

Year 4 Robins were investigating in science this afternoon. They looked at a number of different materials. By putting them into their circuits, they checked their conductivity. When they added the material, if their buzzer or light worked, it meant the material conducted electricity ( it let the electricity pass through it).

Building circuits

This afternoon in science, Year 4 have been experimenting with different equipment to see what different circuits they could create. These circuits included: wires, motors, batteries, light bulbs, switches and buzzers. The children really enjoyed having a little play to see what they could create!

The children then had to create 7 particular circuits that Miss Edwards drew for them. Once they had created each circuit, they needed to record what they observed happening.

Circuits

This afternoon, Year 4 Robins looked at circuits. They had a number of symbols that represented things you can put in a circuit.

They drew a simple circuit with a bulb and a switch. It was important to know that a circuit needed to flow.

They looked at another circuit and discussed the types of energy being made.

Light energy, kinetic energy and sound energy.

They used language such as
• transferred
• connected
• built up.

Well done Year 4.

The children saw light bulbs light up, a buzzer buzzing and a motor running.

Super Sparker

In science the children had the opportunity to complete their own experiments with a partner. This experiment was called Super Sparker and consisted of the children using pie tins, styrofoam dishes and their own hair to create some electricity. Some of the children even got a tiny spark during the experiment!

Video: Positive charges

Year 4 looked at positive charges being created by a Van De Graaff machine.

They predicted what would happen to things that were placed on the top of the dome of the machine.

The tried foil cups, some hair and a tube with foil balls.

As the handle was turned it made a wide rubber band turn which was touching a metal strip. This created a positive charge. As both the dome and whatever was on it had positive charges they didn’t want to touch each other. They repelled. That is why the foil cups flew off, the foil balls jumped around in the tube and the hair stood on end!

Lots of the children made very accurate predictions. Well done! They clearly made good connections with their learning.

Volcanic eruption

Year 4 Robins watched what a Today Robins watched what a volcanic eruption would be like….well we tried!

Using Ammonium Dichromate we tried to simulate a volcanic eruption.

By heating the bottom of the conical flask we simulated the heat built up inside a volcano. Usually when the Ammonium heats it flares giving a green gas as it ignites. The green gas is nitrogen and can be smelly, but we had glass wool plugging the top of the flask.

We did see some sparks and the chemical reaction did create a lot of smoke in the flask. Unfortunately because the Ammonium did not stay as one lump (it spread out a bit too thinly) it did not create a hugely exciting reaction.
Hopefully the next class to do it will get a better result and we can watch their attempt!

The chemical reaction left the Ammonium Dichromate as charred ash, just as you would see in a volcanic eruption.

We learnt that not all experiments will work first time, and that it is important to watch carefully as some chemical reactions are super fast. We did enjoy it though. It was a little bit like watching miniature fireworks in the flask! Another exciting science lesson in Robins class.
would be like…. well we tried!

Using Ammonium Dichromate we tried to simulate a volcanic eruption.
By heating the bottom of the conical flask we simulated the heat built up inside a volcano. Usually when the Ammonium heats it flares giving a green gas as it ignites. The green gas is nitrogen and can be smelly, but we had glass wool plugging the top of the flask.

We did see some sparks and the chemical reaction did create a lot of smoke in the flask. Unfortunately because the Ammonium did not stay as one lump (it spread out a bit too thinly) it did not create a hugely exciting reaction.
Hopefully the next class to do it will get a better result and we can watch their attempt!

The chemical reaction left the Ammonium Dichromate as charred ash, just as you would see in a volcanic eruption.

We learnt that not all experiments will work first time, and that it is important to watch carefully as some chemical reactions are super fast. We did enjoy it though. It was a little bit like watching miniature fireworks in the flask! Another exciting science lesson in Robins class.

Types of rock

Today in Science, Year 4 have been looking at different types of rock. They have been introduced to the three main types of rock (sedimentary, metamorphic and igneous) and have had a quick look at some examples ready for tomorrow’s lesson. As well as these we also looked at fossils and minerals.

The children seem really excited to get a closer look at the different types of rock. They will be drawing what they can see in a magnifying glass, labelling the rocks and describing the structure of each.

Volcanic eruption

Today Robins watched what a volcanic eruption would be like… well we tried!

Using Ammonium Dichromate we tried to simulate a volcanic eruption.

By heating the bottom of the conical flask we simulated the heat built up inside a volcano. Usually when the Ammonium heats it flares giving a green gas as it ignites. The green gas is nitrogen and can be smelly, but we had glass wool plugging the top of the flask.

We did see some sparks and the chemical reaction did create a lot of smoke in the flask. Unfortunately because the Ammonium did not stay as one lump (it spread out a bit too thinly) it did not create a hugely exciting reaction.
Hopefully the next class to do it will get a better result and we can watch their attempt!

The chemical reaction left the Ammonium Dichromate as charred ash, just as you would see in a volcanic eruption.

We learnt that not all experiments will work first time, and that it is important to watch carefully as some chemical reactions are super fast. We did enjoy it though. It was a little bit like watching miniature fireworks in the flask! Another exciting science lesson in Robins class!