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Showing posts with label science yr10. Show all posts
Showing posts with label science yr10. Show all posts

Tuesday, August 3, 2021

Famous scientest

 Name: Isaac Newton

Hometown: Woolsthorpe manor house, United Kingdom

Age of death: 84

Picture







Why is he famous: He is the one that discovered gravity when he was sitting under an apple tree and an apple fell under his head.

Do we use their knowledge/invention today: yes one of the biggest compounds in science today is gravity

Effect on life today: nothing he's dead


Monday, June 28, 2021

Wind racer

Aim: try to make the wind racer go the furthest.

Method: 

1. grab a trolley and a bamboo stick, or a metal rod

2. start making your sail with the different types of material on the board. 

Equipment: cardboard, newspaper, plastic bag, tape, string, Popsicle sticks, trolley, bamboo stick, metal rod.


we gone use paper this what it will look like 



  












discussion: what forces were acting in this project? gravity, pull and friction and thrust.

why did it slow down? it went further away from the leaf blower 

conclusion: did it work? yes... kinda 

What would you do differently? make a better sail

 

Wednesday, March 17, 2021

Science Base and Acid

Aim: To test the Ph of a range of household chemicals


Method


Step 1: Add a few drops of each chemical to a spot on your spotting tile. If a substance is solid or powdered you will need to mix it with a few drops of water before testing it.


Step 2: test the chemicals with the litmus paper


Step 3: test each chemical with a few drops of universal indicator.


Results



Vinegar 

Red 

Red 

Red 

Fabric softener 

red

red

orange

Floor cleaner

Violet 

Violet 

green

baking soda

blue

blue

Blue 

Chemicals

Color in blue litmus

Color in red litmus

Color in universal indicator



Discussion


Vinegar is a weak acid due to it turning red in each experiment. 


Fabric softener is also a weak acid because it was red for the first two experiments but changing orange at the last one.


Floor cleaner is a base, turning purple means that its a base because base turns dark, like tukotahi


Baking soda is a base because it turns dark, again like tukotahi.


Conclusion


Yes It did work, I could of put less base in so it was only one color