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