What makes your heart beat faster?

During the Science lesson today Year 4 all investigated what happens to heart rates when the human body begins to work harder. They set up their own investigations and decided in groups what type of activity they should do to make their bodies work hard. It was a fun a lesson and everyone discovered just how hard a heart must work when the human body exercises more. 

Water Resistance

The only place suitable to test and learn about water resistance is of course the swimming pool! Year 4 used the knowledge of their recent air resistance investigation to inform their predictions about which shapes would easily move through water. Taking careful measurements was the key, although recording results in a wet environment is challenging for anyone!

Air Resistance Investigating

4t used up all their energy in the playground whilst investigating friction and air resistance. Everyone predicted that the largest piece of card would be most difficult to run with, but explaining why was more difficult. Using the vocabulary of surface area was eventually considered and explained in books. Well done 4T!

Friction Found

Friction is the force that keeps us on our feet. It can be found when any two surfaces rub together. 4T had the task to investigate which surface produced the greatest friction. The difficulty was controlling the variables to make sure that it was a fair test so that only one variable was changed and the others kept the same. There were different results but most conclusions showed that carpet produced the greatest force of friction. 

 

What do you know about forces?

4T have just started a new Science topic. Over the next half term we will be learning all about forces in general but also focussing on Friction. We kicked off the unit by learning about how to measure a force using a Newton metre.

Filtering Competition

All 4T really enjoyed the lesson to conclude our unit of work on solids and liquids. Everyone was given the same quantity of water that was mixed with soil, twigs, leaves, sand and pebbles. Each group had only 20 minutes to separate as much solid from liquid as possible and try to get the cleanest water and the most water too. Well done to Group 5 who managed to not only get the cleanest water but also the most water too. Ms Alison judged them to have the cleanest water and after measuring it was discovered that they had gathered 900ml too! Well done Group 5.

Mixtures & Solutions - Do you know the difference?

During a busy lesson spent investigating, 4T discovered that not all solids react the same way when they are mixed with a liquid. Some solids seem to disappear into the water to form solutions while others are easily visible. Can you remember which solids dissolve to form solutions? If you can, write them down in a comment below. I wonder how many we can find?

Separating Solids

Learning how to investigate can sometimes be tricky. Today all of 4T had to decide just what equipment to use in their Science investigations. Fantastically, everyone made really sensible and thoughtful decisions and were able to separate some mixtures. 

Will It Melt?

4T really enjoyed learning about which materials will melt. 

Journey To The Centre Of The Earth

For IPC today everyone in 4T took a journey to the centre of the earth. Everyone was amazed to learn how the Earth may be similar to an egg, and exactly what is inside our planet. Although the facts about the layers of Earth were amazing, everyone enjoyed making it more! All of 4T are going to blog a set of instructions of how to make such fantastic Earths. When they are done I will add a link into this post showing how. 

Super Science

Today we started learning about solids and liquids. Everyone enjoyed trying to identify the different solids and liquids. As you can see there was plenty of interesting discussion. We discovered that lots of materials seem to have properties of both liquids and solids! I wonder if you can research to find out if toothpaste is actually a solid or a liquid?