Our Science Investigation

Science Investagation

Egg Drop Science

Today we did some science some boy science because the girls where all doing stuff so we decided to try the egg drop experiment. The rules where simple you could only touch the plate. But as you can see when we decided to go big or go home our teacher said that we had to use figs instead of eggs but we still had fun when the person in the bottom left (Jack B) decided to hit the cup which went flying off the table onto the ground lucky not smashing!

Types of Energy

Types of Energy

Energy is due to position or movement of an object - Kinetic and Potential

Forms of energy	What is it?	Example?
Kinetic energy	Energy in movement
Mechanical energy	Makes things move by workable moving part or parts.	Wind up toy, scissors, rubix cube and a pen.
Thermal energy	This energy produces heat by the movement of tiny particles within an object.	Fire, jug, kettle and a pot
Magnetic energy	Energy from attraction of objects made of iron.	Magnets on a fridge
Electrical energy	Electrical energy can be used to move charged particles through a wire.	Electricity and power which is used to power appliances
Potential energy	Stored Energy
Gravitational energy	Energy stored in objects held above the earth’s surface.	A flying plane has a higher gravitational potential then a plane on the ground
Elastic energy	Elastic energy occurs when objects are compressed and stretched	Slingshot, springs and a rubber band
Chemical energy	Chemical Energy is energy that is stored in the bonds of chemical compounds (atoms and molecules).	Batteries, diesel, petrol, natural gas, and coal.
Nuclear energy	the energy released during nuclear fission or fusion, especially when used to generate electricity.	Nuclear power plant - provides electricity

Kinetic vs Potential Energy

Hexegon

Today we had to do a hexagon activity to understand the laws of motion we decided that we need to group everything to a key word first then connect them to each other to make our spiderweb. The reason we are doing this is for our science this term about newton's 3 laws of motion.

I Didn't take this photo! (it's not the best because of the light)

Fire Science

This morning at school (4 May) the boys become pyromaniacs while the girls where learning self defence. We where doing a science experiment about if we light two ends of a candle and supported it between two cups it would rock like a seesaw which all sounded good in practice but sadly our experiment failed because the candle didn't act like a seesaw. ;(
But we watch a video of someone who knows how to do it properly and it worked for them. We discovered that the problem was that we put the wire through the cups rather then on them!

Life Processes (Explanation)

Living organisms have certain life processes in common. There are seven things that they need to do to count as being alive. The phrase MRS GREN is one way to remember them. These letters stand for movement, respiration, sensitivity, growth, reproduction, excretion and nutrition.

It can be easy to tell if something is living or not. A teddy bear might look like a bear, but it cannot do any of the seven things it needs to be able to do to count for being alive. All it can do is what you make it do.

On the other hand a car can move, it gets energy from petrol, (like nutrition and respiration) it might have a car alarm (sensitivity) and it gets rid of waste gases through its exhaust pipe. (excretion) but it cannot grow or make babies. So a car is not alive.

Movement is one of the conditions of a living organism. Sometimes it is not that obvious in examples such as plants and fungi, but animals can move like a monkey can climb trees and fish can swim in water but all living organisms can move one way or another.

Respiration, or being able to breathe, is the next condition. Some living things breathe oxygen in the air using lungs  whilst others like fish use gills to breathe underwater and plants use photosynthesis.

Sensitivity is all about being able to detect things. Like humans use fingers and hairs to detect things. Whereas cats and dogs use whiskers to detect things and octopuses use tentacles to detect objects in and out of the water.

Growth is one of the most important thing for a living creature. If things cannot grow you would stay the same size as when you are born to when you die :0 so a bird will stay the same size as when they hatch.

All living things need to reproduce. There is also a huge amount of diversity has evolved, now reproduction is done in many different ways in many different species. For example mammals give birth to living young, whereas reptiles, fish and birds lay eggs which over a certain amount of time will hatch into young.

Another thing all living organisms need to do to  survive is excretion. This comes in different forms such as, faeces, urine, carbon dioxide. (CO2)

Nutrition, or obtaining and consuming food, is the N in the mnemonic MRS GREN. This means all living things must eat to gather nutrition from the plants and animals to survive. For instance lions eat other animals, but on the other hand bees gather nectar from plants to survive.

In conclusion, it’s well known that life on planet earth is very diverse. From the fish in the sea, to the animals on land we all need to do the same things to survive, they need to move, breath, feel, grow, reproduce, excrete, and eat. If living organisms don’t do these things they will not be able to survive.

Image from free colouring pages

The Human Skeleton

The human skeleton is very important for our survival, with a total of 206 different bones it can do anything for use from helping us move to protecting our vital organs.

The first important part of the skeleton is our actual skeleton which is made up by our skull, sternum and rib cage which protects our vital organs (e.g. heart, brain, lungs e.t.c.) The actual skeleton is one of the most important for our survival. For instance if you got hit on the head or chest you could sustain severe injuries or even die. :0

Secondly is your long bones which consists of your femur, (leg) humerus, (arm) tibia and fibula. (shin/lower leg) The long bones are the main movement bones but but without our hands and feet they are useless for use but when combined they are very useful.

Thirdly is our movement and grip bones which are our hands, feet, shoulder and knees which are our joints to finish of our movement bones (long bones) without these bones we wouldn't be able to stand upright or even pick up things!!! So these bones help us be human because humans are one of the very fev animals that can stand and walk upright.

Lastly there is your bone marrow which is in most of your 206 bones. Your bone marrow stores fat, produces blood cells and helps us heal and mend your bones, without bone marrow you wouldn't be able to fix sprained, broken and dislocated bones. So let’s say if you broke your arm when you were five it would be broken for the rest of your life.

In  conclusion the human skeleton allows us to move, protects the vital organs and with the help of our bone marrow we can heal our bones and the human skeleton make use human.

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Image from wikipedia

Science Experiment

Today we did an experiment to investigate the effect of contamination from fertiliser on ground  water supplies. We used red jelly crystals to represent the fertiliser; gravel and sand to represent the soil; and tap water to represent rain water. We found that the fertiliser leached quickly into the ground water supply in the aquifer (plastic container).

1. Adding "fertiliser"

 2. Adding "rain water".

 3. Fertiliser has leached through the "soil" into the ground water.