Journal What is my journal for? Bell ringer activity Review questions Write in complete sentences!...

Journal What is my journal for?

Bell ringer activityReview questions

Write in complete sentences!

There should be no talking while journal work is being doneNot a group activity!

Questions:Write down the question(s)

and answers Writing prompts

Write down the prompt and your response in complete sentences

ArticlesWrite down what you think

of the article, something that the article made you think about or a question it brought up for you

Journal Entry #1

1. What is science?

2. Do you like science? Why or why not? (no wrong answer)

3. What does the study of Earth Systems include?

Metric System Basics

What is the metric system? Why use the metric system?

To have a single unit for every physical quantity

Most of the world uses the metric system (95%)

MUCH EASIER: Based on units of 10

Metric System Basics

Only a few areas of the world still use the English measurement system

Metric System

ProblemsMetric mishap caused loss of NASA orbiter

September 30, 1999

CNN NASA lost a $125 million Mars orbiter because a Lockheed Martin engineering team used English units of measurement while NASAs team used the more conventional metric system for a key spacecraft operation.

The units mismatch prevented navigation information from transferring between the Mars Climate Orbiter spacecraft team in at Lockheed Martin in Denver and the flight team at NASAs Jet Propulsion Laboratory in Pasadena, California.

Lockheed Martin helped build, develop and operate the spacecraft for NASA. Its engineers provided navigation commands for Climate Orbiters thrusters in English units although NASA has been using the metric system predominantly since at least 1990.

Science Basics Metric System Units

Grams Kilograms Centimeters Meters Kilometers Liters Milliliters Celsius

English System Units Pounds Ounces Feet Inches Yards Miles Gallons Cups Teaspoon Quarts Pints Fahrenheit

Metric System Basics

The metric system is based on a base unit that corresponds with a certain type of measurementLength = metersVolume = litersMass or weight = grams

Teacher Demos

Metric Conversions

Metric Conversions

Temperature

Thermometer : Measures Temperature

Thermoscope Galileo Galilee

1600sBased on the ability of

water and air to expand and contract○ Heats, expands = less

dense○ Cools, condenses = more

dense

Dial Thermometers John Harrison

1759Uses the expansion and

contraction of thin pieces of metal

Used in furnace thermostats http://upload.wikimedia.org/wi

kipedia/commons/2/26/Bimetal_coil_reacts_to_lighter.gif

Mercury Thermometers

Daniel Gabriel Fahrenheit1714

Electrical Thermometers

Sir William Siemens1871Measures electrical charge Translates it into a temperature

Andreas Celsius

Celsius Scale: Temperature Scale based on the freezing points of water1742

Homemade Thermometer

Temperature

In the metric system, temperature is measured in degrees Celsius.

Based on the boiling a freezing points of water

When it’s zero it’s freezing,

When it’s 10 it’s not,

When it’s 20 it’s warm,

When its 30 it’s hot!

Conversions

Fahrenheit to Celsius:

Celsius to Fahrenheit:

Density

Density: a measure of how tightly packed molecules are in a substanced = m/VWhich of the pictures below shows a more dense

material

Teacher Demos

1. Coke vs. Diet Coke

2. Underwater volcano

3. Lava Lamp

4. Convection Currents

5. Mysterious Ice cubes