Get a clicker and a calculator and log in Get a clicker and a calculator and log in. If you missed the assignments below, you MUST complete by Thursday of this week or your grade will be a ZERO!!! Heel-Toe Shuffle Lab Lab Safety Quiz Graph Match Lab

Physics Einstein, atomic bombs, spacecraft, math Baseballs, roller coasters, toasters, rainbows, cats The study of the physical world, the most fundamental of the sciences. The behavior and structure of matter.

The metric system The System Internationale, SI Standards of length, time, and mass Length: meter, m Time: second, s Mass: kilogram, kg Derived units: a combination of fundamental units, such as meter per second, m/s

Metric prefixes you need to know Milli- one millimeter is 1/1000 of a meter 18 mm = 0.018 m Centi- one centimeter is 1/100 of a meter 36 cm = 0.36 m Kilo- one kilometer is 1000 meters 24 km = 24,000 m

Measurement uncertainties Precision: the degree of exactness, is limited by the divisions on the scale Accuracy: how well the measure agrees with an accepted standard.

Examples: Baseballstatistics Examples: Baseballstatistics.com lists the heights and weights of current major league players. If the weight of Josh Hamilton was listed as either: Over 200 pounds 145.658 pounds 240.38 pounds Which is accurate, but not precise? Which is precise, but not accurate? Which is both accurate AND precise?

Good measurements Parallax, the apparent shift in the position of an object when it is viewed from different angles.

Scientific Notation and Rounding 356,000,000,000 3.56 x 1011 0.0000000003 3 x 10-10 238567489 2.38 x 108 When moving the decimal point, the exponent changes: Left – Larger Right- Reduced 53.456782 53.46

Also, in Quest (and on the clickers), you cannot answer like this: Also, in Quest (and on the clickers), you cannot answer like this: .75 You must answer like this: 0.75

It’s 1500 miles to Fresno, California ….EXACTLY 1500 miles??? Which numerals are significantly important in the measurement of a quantity?

The rules for Significant Digits All non-zero digits are significant. All zeros are significant unless the zeros are at the beginning of a numeral. Examples: 238 23.0 2370 0.48 200250 0.00562 0.24020 10000 ? Put in scientific notation!

Graphing Data Independent axis: the x-axis- horizontal Dependent axis: the y-axis- vertical The y values depend on the x values

Graphing Data Linear relationship, y = mx + b Inverse relationship y = b/x, b = rational number Quadratic relationship y = bx2

Multiple choice 1. The SI standard unit for distance measurements A. Centimeter B. Millimeter C. Meter D. Kilometer 2. The SI standard unit for mass: A. Centigram B. Milligram C. Gram D. Kilogram 3. The SI standard unit for time: A. Second B. Hour C. Day D. Year

4. Limited by the smallest division on the measuring device scale. (Matching Questions 8-10 choose answer A, B, or C) A. Parallax B. Precision C. Accuracy 4. Limited by the smallest division on the measuring device scale. 5. How much the measurement agrees with an accepted standard. 6. Results from a change in the viewer’s position If these numbers were in scientific notation, what exponent would be used? 7. 63680.5 8. 0.00583 9. 260 Match graphs: A. Linear B. Inverse C. Quadratic 10 11 12