How To Create a Lab Write up - mendenallsclass.weebly.com
Grab your science folder
Turn in syllabus
and safety contract that are due TODAY, now Late. Have you
checked into the website yet? Have a science folder? Missed class,
Get ready to say Ah Man, AGAIN!!!! PreAssessment Time
You will quietly and individually do a preassessment regarding topics we will be covering in the next couple of weeks.
We will grade it after everyone is finished. If you dont know an answer it is OK to leave it blank on a preassessment, but I prefer you TRY.
Video Time---You need a piece of scrap paper Solar
FREAKIN' Roadways Think about it.?
Where did this idea come from? Lets make it up..
Let's see what SpongeBob Sa ys...
But 1 lets watch a video st Inspiration
from Forrest Lets play.How did they think of that?
In 1948. George de Mestral, a Swiss engineer, returned from a walk and found some cockleburs clinging to his cloth jacket. When de Mestral loosened them, he examined one under his
microscope. The principle was simple. The cocklebur is a maze of thin strands with burrs (or hooks) on the ends that cling to fabrics or animal fur. By the accident of the cockleburs sticking to his jacket, George de Mestral recognized the potential for a practical new
fastener. It took eight years to experiment, develop, and perfect the invention, which consists of two strips of nylon fabric. One strip contains thousands of small hooks. The other strip contains small loops.
When the two strips are pressed together, they form a strong bond. It is strong, easily separated, lightweight, durable, and washable, comes in a variety of colors, and wont jam. What is it?
Zeth Wheeler patents rolled and perforated
wrapping paper in 1871. By 1874 he had is own business the Rolled Wrapping Paper Company, but the company couldn't turn a profit. In 1877, Wheller reorganized into the Albany
Perforated Wrapping Paper Company and began selling Perforated paper ('The Standard') on a roll. It sold in plain brown wrappers and fit conveniently into the American bathroom,
which at the time was quite small. What is it?
Walter H. Deubner ran a small grocery store in St. Paul, Minnesota, and he was looking for a way to give his business a boost.
By careful observation, he noticed that his customers purchases were limited by what they could conveniently carry. He set about devising a way to help them buy more purchases at one time. It took him four years to develop
the right solution: a prefabricated package, inexpensive, easy to use-and strong enough to carry up to seventyfive pounds worth of groceries. The package consisted of a paper bag with cord running through it for strength. Deubner named his new product after himself, calling it the "Deubner Shopping Bag,"
and sold it for five cents. Deubner patented his product and within three years, by 1915, was selling over a million shopping bags a year. Shopping bag
During World War II, James Wright working for the
General Electric laboratories had produced a synthetic, pliable rubber that was cheap and useful for a lot of small jobs as a caulking and molding medium. With the war over, a large supply existed, and no
one seemed to have any idea what to do with it. Mr. Hodgson came up with one. He bought a large amount, put it into plastic eggs, and sold it to children Kids could use it to make spiders and snakes, ware
it on their faces at Halloween, and even lift comicstrip pictures right off the pages of the Sunday funnies. What is it?
Look at the objects being passed around Make as many observations as you
can. 1 thought? st
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e i Sc How To Create a Lab
Write up Turn to page 2 of your packet
We will be starting near the middle of the page Before you do a Scientific
Investigation, you need a Reason Sometimes your purpose
comes from observations and inferences that you have made. Important Question
Whats the difference between an OBSERVATION and an INFERNCE?
Observations There are 2 types Qualitative observations use your senses to observe the results.
(Sight, smell, touch, taste and hear.) Quantitative observations are made with instruments such as rulers, balances, graduated
cylinders, beakers, and thermometers. These results are Inferences- are
explanations of observations. It smells that way so it must be a. It is that color so I assume it is a(n)
Which type of Observation is it? There are 33 students in this room. Quantitative-observations made using
The students in this classroom look very well groomed. Qualitative-any other observations Some things to remember
When making ObservationsLeave your bias behind
We all know what happens when you ASSUME.
Assumptions come later when INFERING.
And dont forget ALWAYS RECORD your observations.
Oh. And you may have to do it again.
Lets Practice Observations and
Inferences Make OBSERVATIONSwhat do you INFER from your observations?
Did you know we throw away 200 billion plastic bottles every year?
The worst part is, they dont degrade like other trash. Nearly every piece of plastic ever made still exists somewhere.
What if we stopped throwing plastic bottles away, and started using them to solve problems instead?
In the Philippines, thousands of people live in shanty towns where houses are built so close to each other, they have no windows or natural light.
Without electricity, or access to the sun, families must work, do chores, and eat in near darkness.
Alfred Moser and a group of MIT students realized that with just a little tweaking, plastic bottles could bring light to struggling
Filipinos. Each bottle is filled with water and a bleach tablet is added. When installed through a hole in the roof, the bleachy
water refracts and spreads the sunlight, which illuminates the room beneath just like a light bulb would. This discovery marked the
beginning of the Liter of Light movement. So far, these plastic bottle lights have brightened 28,000 homes
and the lives of 70,000 people in Metro Manila alone. Indonesia, and even Switzerland, have started
using the solar light bulbs as well. The goal is to install one million of these solar light
bulbs around the world by 2015.
Lets revisit our outside observations from Last Class Examining the World Around us..
There are some changes. Lets edit first In your own words, write the definitions
based on what you already know. List 4 observations with inferences from yesterday. DONT DO THE BACK, yet.
You have 6 minutesGO I observe a wild chicken running around my backyard, so I infer that someone dumped their unwanted
chicken. The Environment
The Object Sometimes our Observations lead to.
Experimental Question/Purpose: This is the question that you are trying to answer through experimentation.
It should not be a yes or no question. Examples: Does changing the amount of water used affect the number of seeds produced by a sunflower?
But to have an appropriate question you must be able to identify your Variables
Lets take a pre-quiz Happy Tuesday!
6th Block Variables PreQuiz Results +0/7- 0 person +1/7- 1 people
+2/7-3 people +3/7-3 people +4/7-3 people
+5/7-5 people +6/7-5 people +7/7-10 people
Variables: Variables are factors, conditions, and/or relationships that can change or be changed in an event or system Why are variables important?
In science you must use variables to experiment, without variables there would be nothing to observe Lets see some
examples. Three Kinds of Variables 1.
Independent Variable-also called the manipulated variable this variable is intentionally changed by the
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