School Year 2015-2016 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 Cafe8:27 – 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 QuestionsHomework: •Syllabus signed (Extra Credit email)•Materials for class

Unit 1 Day 1OBJECTIVE:

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 2OBJECTIVE:

Relationship between Science and Technologyand 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 3OBJECTIVE:

Relationship between Science and Technologyand 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 4OBJECTIVE:

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 experimentToday: •Homework check and review: Chapter 1.2 GRWS•DVD Field Trip – Cracking the Case (pg 13)•Math in Science•Scientific Notation•Temperature conversion - oC & oF

•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 NAME Core #

YOUR ADDRESS

HOME PHONE

PARENTS NAME(s)

PARENT EMAIL

PARENTS CELL PHONE

BOOK #CONDITION

Lab Safety Challenge

T. Trimpe 2008 http://sciencespot.net/

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

Image: http://morrisonlabs.com/lab_safety.htm

The answers are …

Image: http://morrisonlabs.com/lab_safety.htm

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.

Sci

ence

begin

s w

ith c

uri

osit

y an

d e

nds

wit

h

dis

cove

ry.

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 Technologyare interdependent• Advances in one lead to advances

in the other Transistors…

computer science…

space science…

???

LG and Samsung both have models available in early 2016!

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 TimeThe universe is very big and very old

Matter and ChangeMatter has volume and mass and takes

the form of GAS, SOLID or LIQUID

Forces and MotionForces cause changes in motion

EnergyCan 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 MethodFigure 7

A Scientific MethodFigure 7

A Scientific MethodFigure 7

A Scientific MethodFigure 7

A Scientific MethodFigure 7

A Scientific MethodFigure 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 ExperimentSuppose 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 FactMeasuring 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 10.16 centimeters. 1. Why did the hand produce unreliable

measurements before it wasstandardized?

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 1

3.4 x 105 2.77 x 107

9.8 x 10-6 1.6 x 10-4

Practice converting between ordinary numbers and Scientific Notation

1. 625,000,000 =

2. 3.974 x 108 =

3. 199,610,000,000,000 =

4. 2.46 x 1012 =

Practice converting between ordinary numbers and Scientific Notation

1. 0.0000000329 =

2. 4.278 x 10 -8 =

3. 0.0000000000000000000256 =

4. 1.0987 x 10 -4 =

Math with Scientific Notation

Multiplication: Multiply the numbersAdd the exponents

7

(3 X 104)(2X103)=

6

6 X 107

Practice Using Scientific NotationMultiplication

1. (2 X 103)(4X104)=

2. (6 X 105 )(7 X 10 6)=

3. (5.5 X 107)(4.2 x 104)=

4. (3 X 10 -6)(2X10

-4)=

Using Scientific Notation

Math with Scientific Notation

Division: Divide the numbersSubtract the exponents

7

(12 X 1011)/(2X104)= 6 X 107

6

Practice Using Scientific NotationDivision

5. (4 X 106) / (2X104)=

6. (9 X 108) / (3 X 106)=

7. (3 X 10 -6) / (2X10

-4)=

8. (21 X 10 -5 ) / (7 X 10 10)=

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) 10o C ________ 2) 30o C ________ 3) 40o C ________ 4) 37o C ________ 5) 0o C ________

Celsius = (Fahrenheit - 32) x (5 / 9)Convert the following to Celsius

6) 32o F ________ 7) 45o F ________ 8) 70o F ________ 9) 80o F ________ 10) 90o F ________ 11) 212o F ________