Current and Voltage

 

Bagged water experiment

 The point of the project is to poke a pencil through both sides of a bag of water without the water leaking out of the bag.

Steps I followed get some sharp pencils, fill a plastic bag up with water seal the bag and then get your pencils and carefully stick them through the bag.

Discussion The zip-lock bag used was most likely made out of a polymer called low-density polyethylene (LDPE). It’s one of the most widely used packaging materials in the world. LDPE is low in cost, lightweight, durable, a barrier to moisture, and very flexible. The tip of the sharpened pencil can easily slip between. The material that the bag is made out of helps to form a temporary seal against the edge of the pencil. When the pencil is removed, the hole in the plastic bag remains because the polyethylene molecules were pushed aside permanently and the water leaks out.

Conclusion- Did it work? yes this worked a little bit. When I stuck the pencils through a little bit of water dripped out. If I where to do this again next time I would use more pencils.

Issac Newton

 

• Name, age, hometown, alive/ dead. Isaac Newton, He was 84 when he died if he was still alive now he would be 328. His home town was Woolsthorpe, Lincolnshire, England.

• What were they famous for? Isaac Newton was famous for multiple things but he was mainly famous for his formulation of the three laws of motion. The basic principles of modern physics

• Do we use any of their inventions today? We use electricity everyday.

What are 2 random facts about your scientist? Issac Newton served in Parliament. Issac Newton had a stutter

Eye labels

 

Analyse the effect of heat

 Contraction- When the heat causes the can to become smaller.

Conduction- Where the fire heats up the metal rod causing the pins to drop. 

Convection- Moving heat by moving particles the crystals moves up first before going around the rest off the water because hot air rises.

Convection in gas- When the tea bag is burnt the last bits of it flew up into the air 

Expansion- Where the ball became bigger when put over heat causing it to be too big the fit in the hoop.

Effect of heat- Where the object that your heating up expands and usually makes the object weaker or makes it grow or shrink in size.

Changing States

Day 1 Changing States Worksheet Name 3 examples of the following states of matter. Solid: 1.Brick 2.Wood 3.metal Liquid: 1. Milk 2. Juice 3. Water Gas: 1.Air 2.Carbon dioxide 3.Nitrogen Fill in the grid below: Solid Liquid Gas How close are the particles to each other? They are hold really strong together They are kind of close They are not close How do the particles move? They vibrate The particles Roll over each other The particles move quickly and randomly How strong are the forces holding the particles together? The forces holding them together are very strong The forces holding the particles together kind of strong The forces holding them together are not very strong

Chemistry experiment felt and water

This experiment was just like the last one. Apart from that we got a strip of filter paper and used a felt to put a dot on the paper I used a dark shade of purple. We then did the same process of letting it set in a test tube apart this time the liquid we used was water. After letting it sit in water it separates into pink dark blue and light blue.

Chemistry experiment

We started off by putting a teaspoon of sand

and 5 small leaves in a mortar and pestle.

We then tipped in some acetone and grinned it.

After it was a thick substance and almost looked

like mowed grass we got a toothpick and put a

small dot of the grinned up substance on a small

strip of filter paper, Tipped some chromatography

solution into a test tube and then placed the filter

paper into the test tube so that the dot was just

above the liquid. After being in the test tube for

a while the green dot separated into sections of

brown green and yellow.

Digestive system

 What is the use of these?

Esophagus- The esophagus is a tube that carries food and liquids from the mouth to the stomach.

Stomach- The stomach temporarily keeps food stored  which then goes through from the esophagus to the stomach where it then gets broken down.

Small Intestine-  Small Intestine takes all the nutritions from your food and into your stomach.

Liver- The liver helps by taking away any unwanted fats.

Large Intestine- The large intestine absorbs water and salt from the stuff that hasn’t been digested and gets rid of waste that has been left.

The journey food takes?The food goes in the mouth to the esophagus to the stomach then to the small intestine and it ends by going through the large intestine and it ends by getting rid of it.

The organ's food goes through? The food gets ingested/swallowed, your brain absorbs the food. The food then gets digested, then gets egested/got rid of.

Dirty water experiment

Diluting the water we tipped out 100 ml of of dirty water and added 100 ml's of clean water we then repeated this process twice. 

We then got out a metal retort stand,clamps,funnels and a concrete base a cloth and a piece of filter paper. First we screwed the retort stand into the base. Attached the clamps to the stand. We then put the funnels in the clamps in the top funnel we put the cloth and directly under it in the next funnel we put the filter paper.

When we used the funnels and the retort stand we tipped our dirty water into the top funnel and it filtered through and dripped into the next funnel. The top funnel had a cloth which helped to take out the bark,rocks and big clumps of dirt and in the second we had a piece of filter paper which caught the tiny pieces of dirt that where to small and went through the cloth. After going through the funnels it drips into the beaker underneath.

Did it work? Yes it semi did it separated the bark dirt and rocks from the water but after going through in the process overall the water did have any insoluble objects left in it and didn't seem to look as dirty all though it did have a yellow tinge in it.

Would I change anything? If I were to do this again the yes I would do it differently I would dilute it more then what we did.