1st Quarter Test Review

Observation Observation Using your 5 senses Two types

Qualitative Deals with descriptions. Data can be observed but not measured. Colors, textures, smells, tastes, appearance, beauty, etc. Qualitative → Quality

Quantitative Deals with numbers. Data which can be measured. Length, height, area, volume, weight, speed, time, temperature, humidity, sound levels, cost, members, ages, etc. Quantitative → Quantity 

Inference a conclusion drawn from your observations

How many jumps does it take? Ladder Method 1 2 3 KILO 1000 Units HECTO 100 Units DEKA 10 Units DECI 0.1 Unit Meters Liters Grams CENTI 0.01 Unit MILLI 0.001 Unit How do you use the “ladder” method? 1st – Determine your starting point. 2nd – Count the “jumps” to your ending point. 3rd – Move the decimal the same number of jumps in the same direction. 4 km = _________ m Starting Point Ending Point How many jumps does it take? 4. 1 __. 2 __. 3 __. = 4000 m

Metric Conversions Practice 10.56 km=_____________ cm 35.6 cm=______________ mm 67.89 mm= ____________m 25.6 g=________________ mg

Density Formula Density= Mass/volume If you cut an object in half what happens to it’s density? Problem: Find the density of an object with a mass of 10 grams and a volume of 2 centimeters cubed.

Quickly Heather Eats Ice Cream Scientific Method Scientific Method Question Hypothesis Experiment Interpret Data Conclusion Quickly Heather Eats Ice Cream

Independent Variable The independent, or manipulated variable, is a factor that’s intentionally varied by the experimenter.

Dependent Variable The dependent, or responding variable, is the factor that may change as a result of changes made in the independent variable. .

Control Group In a scientific experiment, the control is the group that serves as the standard of comparison. The control group may be a “no treatment" or an “experimenter selected” group.

Constants The constants in an experiment are all the factors that the experimenter attempts to keep the same.

States of Matter The Four States of Matter The Classification and Properties of Matter Depend Upon Microscopic Structure Particle arrangement Particle energy Particle to particle distance The different states of matter are categorized by the arrangement and energy of the particles at normal temperatures and pressures. The state of matter can be altered by adding or removing energy and/or pressure which can affect the arrangement and energy of the particles. Chumbler - Properties of Matter

Kinetic Molecular Theory All matter is moving Atoms are the smallest parts of matter Absolute zero is

Melting and Freezing of water To change from a solid to a liquid you must add energy in the form of calories. 80 calories are neede to change ice to liquid water The temperature stays constant at 32 Fahrenheit or 0 celsius

Liquid to a gas Vaporization and boiling are the result of more heat in calories. 540 calories are needed to go from a liquid to a gas Evaporation is the change from liquid to a gas

Sublimation Some elements go directly from a solid to a gas Example is dry ice which is solid carbon dioxide

Vocabulary Melting-solid turns to a liquid Freezing-liquid turns into a solid Vaporization-the conversion of water into steam/gas Boiling-liquid turns into a gas Evaporation-to convert or change into a vapor or gas Condensation-a gas loses heat/energy and changes into a liquid Sublimation-solid goes directly to a gas