School Year Back-to-School night New this year  56  86  76 Bell Schedule Time 8th Grade 7:00 – 7:18 Welcome 7:20 – 7:25 CPR 7:27 – 7:37 Core 1 7:39 – 7:49 Core 2 7:51 – 8:01 AM Special 8:03 – 8:13 Core 3 8:15 – 8:25 Break – visit Cafe 8:27 – 8:37 PM Special

Science 8 Unit 1 Mrs. Grayson

Science 8 Day 1 OBJECTIVE : Become familiar with classroom and procedures Do Now: Find your seat (alphabetical by last name) Today: Intro to Classroom Procedures and Expectations Website – Homework and more Syllabus and Course Outline Assign books Book and Contact card Science is Curiosity….Beach Ball Questions Homework: Syllabus signed (Extra Credit ) Materials for class

Unit 1 Day 1 OBJECTIVE : Demonstrate understanding of lab safety rules and location of lab safety equipment Do Now: What’s Wrong? (Get out a blank piece of paper…A Lab Scene will be on screen in a moment) Today: Start Notebook and TOC Emergency Drill Information Lab Safety Rules Slideshow  You must pass a Lab Safety Quiz and sign a Safety Contract before you can participate in any chemistry lab. Bikini Bottom Science Safety Rules Search and Find 18 broken safety rules Homework: Finish Bikini Bottom Sign Safety Contract

Unit 1 Day 2 OBJECTIVE : Relationship between Science and Technology and the branches of Natural Science Do Now: Branches of Science Matching =>Keep it out…we will go over the answers Have you turned in your syllabus and safety contract? Bikini Bottom Broken Rules? Today: Lab Safety Quiz SCIENCE 8 PRE-TEST Chapter 1.1 Slideshow and Notes Chapter 1.1 GRWS Homework: Read Textbook Ch 1.1pg 2-6 Pg 6 questions # 1-7 Complete sentences

Unit 1 Day 3 OBJECTIVE : Relationship between Science and Technology and the branches of Natural Science. Do Now: Word Window Vocabulary … Chapter 1 Turn in Homework (TB pg 6 #1-7) Today: Chap 1.1 GRWS - finish A Scientific Method – Notes Design an Experiment Sponge Bob Experiments worksheet Homework: Read Chapter 1.2 and complete GRWS 1.2

Unit 1 Day 4 OBJECTIVE : Practice scientific notation math skills. Identify the metric units used for temperature. Do Now: Bikini Bottom Experiment # 5 Keep it out – we will go over this experiment Today: Homework check and review: Chapter 1.2 GRWS DVD Field Trip – Cracking the Case (pg 13) Math in Science Scientific Notation Temperature conversion - o C & o F Homework: Textbook Chapter 1.3 and complete Chapter 1.3 GRWS

Science 8 Course Outline The Scientific Process – Metric Measurement – Presenting Science Chemistry – Matter and Atomic Structure – Periodic Table – Bonding – Reactions Physics – Motion and Forces – Newton’s Laws – Energy & Work Earth and Space Science – Earth’s Interior – Earthquakes and Volcanoes – Atmosphere – Our Planets – … and Beyond

YOUR NAMECore # YOUR ADDRESS HOME PHONE PARENTS NAME(s) PARENT PARENTS CELL PHONE BOOK # CONDITION YOUR NAMECore # YOUR ADDRESS HOME PHONE PARENTS NAME(s) PARENT PARENTS CELL PHONE BOOK # CONDITION

Lab Safety Challenge T. Trimpe

What’s wrong? Identify 9 different safety concerns shown in the picture below. Image:

The answers are … Image: Always wear safety goggles during a lab. Don’t leave materials laying on the floor. Clean up spills immediately Don’t heat closed containers. Keep your lab area neat and clean. Unplug equipment when not in use. Don’t place lab materials near the edge of the table. Keep papers and other flammable objects away from flames. Don’t smell directly from a container - WAFT.

Chapter 1.1 What is Science Science is a system of knowledge and the methods you use to find that knowledge

Human curiosity is the basis of science. The excitement of science is that you never know what you will find. Science begins with curiosity and ends with discovery.

Scientific Observations may be… Qualitative = Descriptive Quantitative = Numerical

Some experiments are impossible to do… Example: What happened at the start of the universe?

Are Science and Technology the same?

Not really... The goal of science is to expand knowledge The goal of technology is to apply that knowledge, to solve problems

Interdependent Science and Technology are interdependent Advances in one lead to advances in the other Transistors… computer science… space science… ???

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Branches of Science Two general categories- – Social Science – Natural Science Natural Science has three branches – Physical Science – Earth and Space Science – Life Science

Physical Science Physics – The study of matter and energy and the interactions between the two through forces and motion. Chemistry – The study of the composition, structure, properties and reactions of matter.

Earth and Space Science Geology – The study of the origin, history, and structure of Earth Astronomy – The study of the universe beyond Earth, including the sun, moon, planets, and stars.

Big Ideas of Physical Science  Space and Time The universe is very big and very old  Matter and Change Matter has volume and mass and takes the form of GAS, SOLID or LIQUID  Forces and Motion Forces cause changes in motion  Energy Can be transferred by not destroyed

Science and Perspective… Science is a process AND a body of knowledge. Be skeptical Ask questions Discover new truths

A Scientific Method Figure 7

A Scientific Method Figure 7

A Scientific Method Figure 7

A Scientific Method Figure 7

A Scientific Method Figure 7

A Scientific Method Figure 7

A Scientific Method The goal of the scientific method is to solve a problem. There are many versions of the scientific method. – Some have more steps and some have less – All begin with a question or problem – All provide an organized process for conducting and analyzing an experiment

The Hypothesis What do you want to know or explain? Use observations to write a question or state a topic you want to investigate. The Observation What do you think will happen? Predict the answer to your question or outcome of the event.

Testing your Hypothesis – Creating your experiment Manipulated (Independent) variable = the variable that CAUSES a change in another **THIS IS THE ONE YOU CONTROL** Responding (Dependent) variable = the variable that CHANGES in response to the manipulated variable

Testing your Hypothesis – Performing your experiment A controlled experiment is:  An experiment where only one variable (the manipulated variable) is deliberately changed at a time  The responding variable is watched for changes  All other variables are unchanged and called CONTROL variables.

Drawing Conclusions If your data supports your hypothesis…YEAH If not, revise the hypothesis or propose a new one based on the data you did see.

Theory vs Law  A scientific theory is a well tested explanation for a set of observations or results  A scientific law is a statement that summarize a pattern found in nature without trying to explain it.  A scientific theory provides the explanation of the pattern

Design Your Own Experiment Suppose that you want to conduct a test to see which brand of cleanser produces the best results when cleaning a kitchen floor. Think about how you would conduct this test. 1.What materials would you need? 2.What procedure would you follow? 3.How would you determine which cleanser produces the best results? Chapter 1.2 The Scientific Approach

Chapter 1.3 Fun Fact Measuring Length by the Handful The English units that we use in the United States developed over a long period of time. For example, the hand was devised in ancient times as a unit of length. It was defined as the length of a person’s hand from the little finger to the thumb. Today the height of horses is still measured in hands, but the definition of a hand is standardized at 4 inches or centimeters. 1.Why did the hand produce unreliable measurements before it was standardized? 2.Measure the height of your desk in hands. Compare your results with other classmates. How do the results vary?

What is Scientific Notation? Used to describe objects that are very big or very small. There are two parts to a scientific notation: 1.The Number Must be at least 1 and less than 10 2.The Power of 10 Describes how many decimal places came from the original number Negative exponents indicate the number is less than 1 Positive exponents indicate the number is more than x x x x 10 -4

Practice converting between ordinary numbers and Scientific Notation 1.625,000,000 = x 10 8 = 3.199,610,000,000,000 = x =

Practice converting between ordinary numbers and Scientific Notation = x = = x =

Math with Scientific Notation Multiplication: Multiply the numbers Add the exponents 7 (3 X 10 4 )(2X10 3 )= 6 6 X 10 7

Practice Using Scientific Notation Multiplication 1.(2 X 10 3 )(4X10 4 )= 2.(6 X 10 5 )(7 X 10 6 )= 3.(5.5 X 10 7 )(4.2 x 10 4 )= 4.(3 X )(2X10 -4 )=

Using Scientific Notation

Math with Scientific Notation Division: Divide the numbers Subtract the exponents 7 (12 X )/(2X10 4 )= 6 X

Practice Using Scientific Notation Division 5.(4 X 10 6 ) / (2X10 4 )= 6.(9 X 10 8 ) / (3 X 10 6 )= 7.(3 X ) / (2X10 -4 )= 8.(21 X ) / (7 X )=

Measuring Temperature Convert degrees Fahrenheit to Celsius (Centigrade) and vice versa:  Temperature in degrees Fahrenheit = (Temperature in degrees Celsius x 1.8) + 32  Temperature in degrees Celsius = (Temperature in degrees Fahrenheit - 32) x (5 / 9)  An interesting temperature related fact is that Fahrenheit and Celsius are equal at -40 degrees.

Fahrenheit = (Celsius x 1.8) + 32 or = (C x 9 / 5 ) + 32 Convert the following to Fahrenheit 1) 10 o C ________ 2) 30 o C ________ 3) 40 o C ________ 4) 37 o C ________ 5) 0 o C ________

Celsius = (Fahrenheit - 32) x ( 5 / 9 ) Convert the following to Celsius 6) 32 o F ________ 7) 45 o F ________ 8) 70 o F ________ 9) 80 o F ________ 10) 90 o F ________ 11) 212 o F ________